Gleichmann Newsletter Issue II/2008
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Content Newsletter Issue II/2008
Gleichmann Ultratec signs distribution agreement
with KDS Daishinku...more
V850ES/xx3 MCU family now complete
...more
78K0R/Ix3 series 16-bit All Flash™ microcontrollers –
also the right choice for demanding motor controls
...more
Lithium-ion: Demand outstrips supply
...more
SSD1961 graphic controller - low-power and low-cost
link between microprocessor and display
...more
Displays with 16:9 format set new standards in the
field of industrial visualization
...more
Maximized performance in a miniaturized package
...more
Powerful optocoupler family in 6-pin SDIP
...more
Mini-LNAs for mobile GPS applications
...more
Employee profile of Carmen Epple – Gleichmann &
Co. Electronics GmbH
...more
Spotlights
...more
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Enhanced quartz portfolio:
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Gleichmann Ultratec signs Europe-wide distribution agreement with KDS
Daishinku
Volketswil, Switzerland – KDS Daishinku, a Japanese manufacturer of quartz, and
Gleichmann Ultratec, a Swiss daughter company of Gleichmann Electronics (part of
the international MSC Group), have signed a European-wide distribution
agreement.
With a total of ten factories in Japan and South East Asia, KDS Daishinku
Corp. - which was founded in 1959 – is one of the worldwide leading
manufacturers of quartz, crystal resonators, crystal oscillators, monolithic
crystal filters (MCF) and optical quartz products. According to Yoshitaka
Tokuda, managing director of KDS Europe, the decision for Gleichmann Ultratec as
sales partner was above all based on the experience and technical competence of
Gleichmann Ultratec’s employees in their handling with quartz products.
“Customer satisfaction is the first priority for KDS. With Gleichmann Ultratec,
we have a found a partner, who absolutely shares this philosophy with us. The
cooperation with Gleichmann Ultratec puts us in a position to be able to
optimally support and advise our customers right up to the circuit design
level,” says Yoshitaka Tokuda.
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For Hans Eggensberger, managing director of Gleichmann Ultratec, the
cooperation with KDS Daishinku is an ideal enhancement to the existing product
portfolio. “Most of the products feature an extended temperature range from
-40°C to +150°C as well as high vibration resistance and shock resistance. This
therefore, allows these high quality products to be used with virtually no
restrictions in various security, medical, automotive and telecommunications
applications”.
According to Hans Eggensberger, an additional advantage of KDS’s balanced
product portfolio is the availability of various packages, which allows an exact
replacement of products from other manufacturers. “This puts us in the position
of being able to react and adopt even faster and more flexibly than before to
our customers’ wishes and requirements.”
Photo caption: Emphasis on high quality quartz products and technical
competence (from left to right): Hans Eggensberger, managing director of
Gleichmann Ultratec and Yoshitaka Tokuda, managing director of KDS Europe.
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V850ES/xx3 MCU family now complete
The third generation of NEC Electronics’ V850 microcontroller (MCU) families
(J series, F series, S series, I series and H series) features a further
increase in the processing speed and a significantly enhanced RAM and flash
memory area. In addition, the ‘family concept’ has been further developed,
guaranteeing a continuation of full software and pin compatibility.
For the J series (V850ES/ Jx3), the
clock rate was increased to 32 MHz and the memory area enlarged up to 1 Mbyte.
Four ultra-low power consumption derivatives (V850ES/ Jx3-L) in 80-pin and
100-pin packages are completely new to this series. Because of the low power
consumption of 0.9 mW/DMIPS and an operating voltage range from 2.2 V to 3.6 V,
these devices are optimally suited for battery-driven applications that demand a
high computing power. During this year, it is planned to enhance the family with
further derivatives (V850ES/Jx3-U & Jx3-H) having a clock rate of 48 MHz
maximum as well as USB and CAN interfaces.
The F series, which is specially designed for CAN and automotive
applications, also incorporates enhanced technical features. The new generation
is equipped with features including, an internal 8 MHz oscillator, a data flash
and flexible 3-phase timers. In addition, with the most powerful version, the
device has two A/D converters with a total of 40 x 10-bit channels. The two A/D
converters enable a synchronous reading of values and therefore, offer a high
level of flexibility, especially with respect to motor control applications.
Furthermore, for costsensitive applications the user is also now provided
with the V850ES/ Fx3-L family, a scaleddown version of the V850ES/ Fx3 family
with less peripheral blocks, 20 MHz maximum clock frequency and smaller memory.
For the V850ES/Sx3 family, which is also specially designed for the
automotive sector, the clock rate is now 32 MHz maximum and the flash memory
size has been enhanced up to 1 Mbyte. The derivatives are available both with
CAN interface and without CAN interface.
New, especially for motor control applications optimized peripheral blocks
such as synchronous 12-bit A/D converters, 3-phase timers, comparators and
opamps, enable flexible control of different motors with the 32- bit MCUs of the
V850E/ Ix3 series.
The devices of the third generation are available with clock speeds of up to
64 MHz. The newest general purpose MCUs of the V850ES/ Hx3 series are fully
software and pin-compatible to previous generations. The maximum clock rate was
also increased to 32 MHz and additionally, an 8 MHz oscillator integrated
on-chip.
In addition to the GHS or IAR software development environments and the
on-chip debuggers, QB-MINI2 or QB-V850MINI, a full in-circuit emulator (IECUBE)
as well as starter kits and software examples are also available to designers
for all product families. Furthermore, a number of different software
accessories, both from NEC Electronics and third party suppliers, are offered,
e.g.: AUTOSAR, various operating systems or also communication stacks such as
CAN, CANopen, LIN, IO- LINK, ZigBee, TCP/IP, and many more.

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78K0R/Ix3 series 16-bit All Flash™ microcontrollers – also the right choice
for demanding motor controls
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You have the task of designing a motor control in a small quantity, there is
plenty of space available and the component costs play a secondary role?
Congratulations, you have indeed hit the jackpot. However, as a rule, especially
designers of motor controls are confronted with a variety of adversities, which
make the selection of an optimal motor control more of an ordeal than a simple
choice.
For example, the charging control in a battery-powered drive solution in standby
mode must be displayed on a small display, a controlled volume (dosing) pump may
only have minimal deviations and requires an exact rotation regulation or the
control of a battery-driven miniature motor should have a high performance
however, the power consumption should be as low as possible. Maybe a controller
is required, which can control the grinder, dosing pumps, communication and user
guidance of a coffee machine and at the same time possibly integrate lots of
peripheral hardware in order to save costs and save space. These few examples
demonstrate how diverse and different the requirements nowadays are for
microcontrollers in the field of motor controls. In the meantime, the spectrum
of functions for microcontrollers ranges from simple on/off brush-commutated
motors to complex multi-axial position controlled, high dynamic
electroniccommutated 3-phase DC(BLDC) motors. By the way, BLDC motors are
becoming more important - not just because of their significantly higher
efficiency compared to normal DC motors. The simple mechanical construction and
considerably lower wear are also advantages of this type of motor. Moreover,
they are smaller, more rugged and efficient, and allow more freedom of choice
for the control.
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Performance is available in abundance
Those of you who have been involved for a long time with the topic of motor
control know that nowadays, the control of BLDC motors is no longer an issue.
Six years ago, 2 to 3 MIPS had to be sufficient for the implementation of an
exact 3-axis position control in 250 us cycle. In the meantime, modern
controllers such as NEC Electronics’ 78K0R/Ix3 series of 16-bit All Flash™ MCUs
at 20 MHz clock frequency easily achieve a processing performance of 13 MIPS. It
is no longer necessary to look for new tricks, to the contrary: plenty of
performance remains for other functions.
Ideally suitable for BLDC motor controls
The 78K0R/Ix3 series of microcontrollers is designed especially for motor
control applications and already integrates on chip all of the essential
circuits for motor control, including an operational amplifier, comparators, and
high-speed A/D converters (2uS) with operational amplifier (op amp).
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Additionally, depending on the version, other features are a 2- or 3-phase
timer including 16-bit timer and dead time generation as well as a watchdog
timer. The low number of additional external components required not only
guarantees more dependability and efficiency during the design phase.
Furthermore, it also helps the user to reduce the bill of materials cost and
save space on the system board. The MCUs are built around the 16-bit 78K0R CPU
core and feature extremely low power consumption in comparison to many other
microcontrollers. With only 1.8 mW per MIPS even the implementation of demanding
battery-powered drive solutions in a small space should essentially not be a
problem.
NEC Electronics’ new MCUs allow fine-grained control of various types of 1-,
2- and 3-phase motors. The flash memory configuration possibilities of the
entire series - depending on device type, available memory configurations range
from 16 to 64 kilobytes (kB) of internal flash memory and 1 to 3 KB of internal
RAM - allow for flexible updating of the software even after the MCU is mounted
on the system board.
NEC Electronics’ MCUs are supported by a comprehensive suite of development
tools including the MINICUBE2 (onchip debugger), the IECUBE emulator (FULL ICE),
diverse compiler suites as well as numerous starter kits and software tools.
Furthermore, a 24 volt evaluation kit and a high voltage evaluation kit are
offered for a quick start. Packaging options include SSOP and LQFP packages in
pin counts ranging from 30 to 64 pins. Product literature for the 78K0R/Ix3 MCUs
is available immediately from Gleichmann Electronics. Samples are expected to be
available in July 2008.
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Lithium-ion: Demand outstrips supply
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Even though, in the meantime (after the fire at the manufacturing plant at
the end of September 2007) production of Matsushita Battery Industrial Co., Ltd.
(MBI) lithium-ion rechargeable batteries have been allotted to various locations
and full production capacity has once again been resumed, there is currently no
easing of the market tension in sight. To the contrary, demand will probably
remain significantly higher than the supply and this is expected to continue
well in to the second half of this year. One of the major reasons for this is
the increasing demand for lithium-ion products. Those currently placing new
orders for cells from LG, Panasonic, Samsung, Sanyo or Sony must be prepared to
accept delivery times of up to nine months. Nobody can rule out that delivery
conditions will substantially worsen in the coming weeks. Market researchers
predict that the second fire at a lithium-ion rechargeable battery production
plant within a few months – this time, at LG Chem – could lead to production
losses of many millions of cells per month till at least the middle of this
year. Above all, victims of this development could be new and existing European
customers. This is no surprise when one considers the numbers.
The European market share of the worldwide demand for lithium-ion rechargeable
batteries is not more than 8% to 10%. To make the proportions clear: Laptop
manufacturers alone claim significantly more than 20% of the lithium-ion
rechargeable batteries market. With so much market power, it is obvious who will
have the disadvantage during allocation times.
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| Price trend of cobalt, April 2002 – February 2008 |
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| Price trend of aluminum, January 2005 – March 2008 |
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Less positive news also comes from the pricing situation. Since the end of
2007, prices for precious metals and alloys such as aluminum, copper and cobalt
have once again significantly increased. In order not to endanger the
development of the lithiumion rechargeable batteries market, manufacturers have
in the past absorbed the price increases in the hope of a rapid stabilization.
However, nobody will risk serious predictions whether in the medium-term a
lasting relaxation will return. The booming economies of China and India with
yearly growth rates of far more than 5% lead us to believe that the upward price
spiral for raw materials will continue and therefore, sooner or later
lithium-ion cells will become more expensive.
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| Price trend of copper, January 2005 – March 2008 |
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Despite the tense delivery situation and further market price alignment in
2008, we at Gleichmann Electronics assume that the number of new designs of
applications with lithium-ion rechargeable batteries will nonetheless, also
continue to increase in 2008. The advantages and performance characteristics of
this technology for the users are in the meantime too remarkable and obvious.
Furthermore, in the meantime there are a number of interesting alternatives to
lithiumion cobalt cells, which are particularly affected by the current delivery
limitations. These alternatives only differ slightly in price performance ratio
relative to performance and size. For example, whereas with lithium-ion cobalt
cells only the double capacity is available as peak current, lithium-ion
manganese cells offer between 10C and 30C and lithium-ion iron-phosphate cells
even more - up to 80C. Furthermore, in particular with lithium-ion
iron-phosphate cells, nowadays after more than 1,000 life cycles more than 80%
of the effective capacity is still available. Compared to lithium-ion cobalt the
other two lithium-ion technologies described here offer less capacity per cell,
however on the other hand offer additional safety.
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Last, but not least some small comfort: Even if the prices for lithium-ion
rechargeable batteries should continue to climb higher, the costs for the
complete lithium-ion pack solution do not necessarily have to increase at the
same rate. This is because; by far, not all components of an intelligent
rechargeable battery pack are affected by the lithium-ion price increase.
Do you have questions regarding the lithium-ion battery market and would you
like to know which solutions we can offer? We look forward to hearing from you
soon to discuss your specific inquiries.

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New Graphic Controller provides universal, low-power, low-cost link
between microprocessor, display and display driver
Solomon Systech has introduced the SSD1961 graphic controller for
mobile applications including smartphones and portable media players (PMPs), but
also for energy sensitive applications such as room temperature controllers or
controls for window blinds. The SSD1961 supports resolutions of up to 640 x 480
pixels (VGA) at up to 18-bit colour depth. Furthermore, key product features of
the device include 675 Kbytes of embedded display SRAM, which serves as frame
buffer between the host processor and the LCD display.
Universal, low-power and low-cost link between microprocessor, display
and display driver
Solomon Systech (Distribution: Gleichmann Electronics) has introduced the
SSD1961 graphic controller for mobile applications including smartphones and
portable media players (PMPs), but also for energy sensitive applications such
as room temperature controllers or controls for window blinds. The SSD1961
supports resolutions of up to 640 x 480 pixels (VGA) at up to 18-bit color
depth. Furthermore, key product features of the device include 675 Kbytes of
embedded display SRAM, which serves as frame buffer between the host processor
and the LCD display.
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The on-chip integrated LCD and MCU interfaces reduce the wiring effort to a
minimum. The SSD1961 supports different types of monochrome, color, active and
passive LCD displays including 4/8-bit monochrome/color STNs, 12/18-bit active
matrix TFTs and 16-bit HR TFTs with 160 x 160 pixels and 320 x 240 pixels. The
universal built parallel 8/16-bit controller interface enables the connection of
CPUs from different manufacturers.
The SSD1961 contains an integrated graphic engine, which allows display
rotation of 90°, 180° and 270°. The hardware implemented display rotation is
significantly more efficient than the usual software solutions, where the
content of the display buffer must be entirely rewritten every time. The graphic
engine also supports “Virtual Display” mode. This allows viewing of portions
from a larger image by means of panning and scrolling of the display.
Furthermore, the implemented “Floating Window” mode enables the overlaying of
various size windows on the main window. For improved image quality, brightness,
contrast and color saturation can each be separately set and programmed.
To extend the battery life in mobile applications, the SSD1961 uses an
innovative dynamic backlight control technology. The sophisticated algorithm of
this technology helps to reduce backlight power consumption by up to 50%.
The four general-purpose inputs/outputs (GPIOs) require a supply voltage of
between 1.8 V and 3.3 V and the controller core itself 1.2 V. The SSD1961, with
dimensions of only 5 mm x 5 mm, is available in a 64-pin TFBGA (Thin Fine-pitch
Ball Grid Array) package.
Solomon Systech has announced that in the fourth quarter of 2008 it will
introduce a further graphic controller, which will support the new WVGA (Wide
VGA) with 800 x 480 pixels resolution and 24-bit color depth.
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Displays with 16:9 format set new standards in the field of industrial
visualization
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The 16:9 format is not yet established in industrial use. Most applications
for process visualization or presentation of images are still designed with the
4:3 format. Nonetheless, the interest for such displays is constantly growing,
because the 16:9 format is more natural to the human eye’s field of vision and
therefore offers an enormous variety of applications.
One of the current highlights in this field is NEC LCD Technologies’
brand-new 7.0 inches (18 cm diagonal) TFT display NL8048BC19-02, which is
designed mainly for industrial applications. The NL8048BC19-02 not only features
an above average long lifetime backlight, but also long-term availability. The
NL8048BC19-02, built using twisted nematic (TN) technology, has a resolution of
800 x 480 pixels and is controlled via a selectable 6-bit or 8-bit low-voltage
differential signaling (LVDS) interface. Luminance is 400 cd/m² and contrast
ratio 1000:1. A sophisticated foil technology allows both horizontal and
vertical viewing angles of 160° typical. An additional guarantee for optimal
viewing conditions is the integrated reverse scan function. If required, this
allows the user to rotate the image 180 degrees so that it can be mounted -
depending on the application - to operate with optimal viewing angle.
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The easily replaceable LED backlight with a lifetime (MTTF) of 50.000 hours
(typ.) allows a low power consumption of approximately 3 Watts. With compact
outline dimensions of 170.0 (W) x 111.0 (H) x 8.5 (D) mm and an operating
temperature range of -20°C to +70°C, the NL8048BC19-02 is an ideal choice to
meet the demands of many industrial applications. By the way, a
supertransmissive natural light TFT (ST-NLT) technology version of the
7.0-inches display with 16:9 format will also be available soon under the part
number NL8048- BC19-02C. With the same power consumption, this version offers a
significantly higher luminance. By means of a clear polarizer with
antireflective coating (ARC) and a reflective foil inside the display, which
takes advantage of the ambient light as additional light source, this version
still guarantees an excellent readability even in very bright environments and
with direct sunlight.
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Also available with 16:9 format is the NL12876BC26-25, a 15.3-inches (39 cm
diagonal) display. It is not only perfectly suitable for visualization tasks in
industrial automation, but also for point of information (POI) terminals,
entertainment applications and for use in medical monitoring devices. The
NL12876BC26-25 is built up in super-advanced, super-fine TFT (SA-SFT)
technology, which is based on the - especially for industrial applications
specified and enhanced - in-plane switching (IPS) technology. The panel’s
features include a high transmission and consequently a high luminance of 470
cd/ m², a contrast ratio of 700:1, a very short (for this technology) response
time of 25 ms and an extended operating temperature of -10°C to +70°C.
The SA-SFT technology guarantees a viewing angle of 85° typical on all four
sides (up, down, left, right) without color reversal or color shift. The display
can therefore be mounted horizontally (landscape) as well as vertically
(portrait). By the way, the power consumption of the display, which is equipped
with four cold cathode fluorescent lamps (CCFLs), is only 18.0 W. The
NL12876BC26-25 is controlled via an 8-bit LVDS interface. One of the most
convincing attributes of NEC TFT Displays is a long-term availability of four
and even more years (based on past experience).
For each display version and the different fields of application, we offer a
comprehensive range of accessories such as: suitable inverters, cable forms,
touch systems and controller cards, both for analog RGB and video applications.
You can also benefit from the advantages, which 16:9 format offers in a
professional environment, and set new standards with your applications in the
field of industrial visualization.

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Maximized performance in a miniaturized package
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Gleichmann Electronics has in its product portfolio: special microcontrollers
from NEC Electronics Europe for sensor applications, intelligent relays,
switches, keypads, toys or other end applications, which must be implemented in
the smallest possible space.
With dimensions of only 2 x 2 mm, the three derivatives of the K series are
currently the smallest devices. Each of the 8-bit MCUs, available with different
memory sizes, is provided with an internal 8 MHz oscillator and a 240 kHz
oscillator for watchdog functions. Special features include a 10-bit A/D
converter with a conversion time of < 5 μs. In addition, an integrated
poweron reset and the programmable low-voltage detection help to save external
components.
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The 16-bit area is covered by the 78K0R/Kx3 generation in 5 x 5 mm2 BGA
package. Furthermore, in addition to the above mentioned features such as
internal oscillators, low-voltage detection or power-on clear, members of the
78K0R/Kx3 series offer an innovative 16-bit timer array unit, a serial array
unit as well as a real-time clock with watch function and calendar function.
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MCU
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Memory
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Pins/Package
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Size
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A/D Converter
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Timer
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Interfaces
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Oscillators
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78F921x
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1k.. 4k Flash
128B RAM
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16 / BGA
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2 x 2 mm
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4 x 10 Bit
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1 x 8 Bit, 1 x 16 Bit,
Watchdog
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Intern: 8 MHz, 240 kHz,
Extern: 10 MHz
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78F050x
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8k.. 32k Flash
512B.. 1B RAM
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30 / LGA
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4 x 4 mm
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4 x 10 Bit
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4 x 8 Bit, 1 x 16 Bit,
Watchdog
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1xCSI, 2xUART, 1xI2C
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Intern: 8 MHz, 240 kHz,
Extern: 20 MHz
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78F053x
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16k.. 60k Flash
768B.. 3k RAM
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64 / LGA
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5 x 5 mm
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8 x 10 Bit
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4 x 8 Bit, 1/2 x 16 Bit,
Watchdog, Watch-Timer
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1/2xCSI, 2xUART,
1xI2C
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Intern: 8 MHz, 240kHz,
Extern: max. 20 MHz, 32kHz
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78F114x
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64k.. 256k Flash
4k.. 12k RAM
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64 / BGA
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5 x 5 mm
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8 x 10 Bit
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8 x 16 Bit, Watchdog,
Real Time Clock
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2xCSI, 3xUART, 1xI2C
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Intern: 8 MHz, 240kHz,
Extern: max. 20 MHz, 32kHz
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NEC: Powerful optocoupler family in 6-pin SDI
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Transmission speeds of up to 10 Mbits/s at operating temperatures up to
110°C:
Stutensee, Germany - NEC Electronics has newly introduced the IGBT drive
optocoupler PS9301 and the high-speed couplers PS8302, PS9303, PS9313 and PS9317
(Distribution: Gleichmann Electronics) in a 6-pin SDIP (Shrink Dual Inline
Package) with pin pitch of 1.27 mm. The 6‑pin SDIP occupies about 50% less
mounting area on the PCB than a comparable 8-pin DIP.
In the field of SMD, the shrink dual inline package contributes to a
significant improvement of isolation characteristics. Some of the key features
of the ICs, designed for 1Mbit/s and 10Mbits/s data transmission speeds, are
5000 VRMS isolation voltage, 0.4 mm internal isolation distance and 8 mm outer
creepage and air distance.
Furthermore, thanks to an integrated electrical shield, a common mode
transient immunity (CMR) of at least 15 kV/µs is achieved. This therefore makes
the new optocouplers ideal for use in noisy environments.
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Optocouplers of the PS93/83xx family have each been optimized for various
fields of application. For example, the PS8302 with 1 Mbit/s data transmission
speed and 35 V output voltage rating is ideally suited for use in industrial
communication. The same applies for the PS9317, a digital optocoupler with
open-collector output and up to 10 Mbits/s data transmission speed.
The PS9313 optocoupler with IPM interface, open-collector output, up to 1
Mbit/s data transfer rates and a 35 V output voltage was specifically designed
for use in motor controls. On the other hand, devices of the PS9301 series for
IGBT and MOSFET gate drives are designed for 0.6 A maximum output current and
VCC ranging from 10 V to 30 V.
The PS9301, PS9303 and PS9317 optocouplers operate in the industrial
temperature range from 0°C to 100°C and for the first time, the PS8302 and
PS9313 with a guaranteed maximum operating temperature of up to 110°C. All five
optocouplers are compliant with common international safety standards. Samples
in different lead bending options, for through hole or as surface mount device,
are available immediately from Gleichmann Electronics.
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Mini-LNAs for mobile GPS applications
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NEC Electronics has recently introduced two extremely low noise amplifiers
for mobile GPS applications. The μPC8233TK, with dimensions of only 1.5 mm x 1.1
mm x 0.55 mm, features include low noise (0.90 dB typical), high gain of 20 dB
typical and a supply voltage range from 1.6 V to 3.3V.
The low current consumption of 3.5 mA typical makes the μPC8233TK ideally
suitable for mobile navigation systems and tracking devices.
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The μPC8236T6N is a low noise amplifier in a 1.5 mm x 1.5 mm x 0.37 mm, 6-pin
TSON (Thin Small Out-line Non-leaded) package. Because of its high integration
density, the only external components required for this device are four
capacitors and a coil. The noise behavior of the device could be optimized to
0.8 dB. As with the μPC8233TK, the μPC8236T6N also operates with a supply
voltage range from 1.6 V to 3.3V. Additional advantages are very low distortion
and a low current consumption of 6.5 mA typical.
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Employee profile of Carmen Epple – Gleichmann & Co. Electronics GmbH
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Following her commercial education, Carmen Epple first of all
gathered her sales and purchasing experience in other industries before joining
Gleichmann Electronics 20 years ago.
Carmen spent the first years in sales before taking over in
1990 a position in purchasing of microcontrollers from NEC Electronics and
Samsung. Today, as manager of a 5 person purchasing team, she is still
enthusiastically devoted to fulfilling the needs and wishes of the customers.
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In parallel to this, Carmen, as administration manager, has
made a significant contribution to the establishment and expansion of
Gleichmann’s office in Stuttgart, which opened in 1999. With commitment and
dedication, Carmen, as training manager, looks after our commercial trainees,
who profit from her comprehensive knowledge and experience.
Carmen, a passionate skier, will celebrate her 47th birthday
in June with a motorbike tour from Germany to Norway.
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Spotlights
SanDisk ‘Mobile Products’ also available immediately from Gleichmann
Electronics
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Since May 1, 2008, Gleichmann Electronics is now also official distributor
for SanDisk ‘Mobile Products’. The product portfolio includes microSD cards with
memory capacities from 256 MB to 8 GB as well as the Memory Stick Micro (M2)
family, which is also offered with memory capacities from 256 MB to 8 GB. Since
the year 2000, the sister company MSC has already worked together successfully
in many fields with the global leader in flash memory. usc@msc-ge.com Tel. + 49
7249 910-340
usc@msc-ge.com Tel. + 49 7249 910-340
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Fast optocoupler for high voltage AC or DC motor drives
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NEC Electronics’ fast IGBT drive optocouplers PS9552 and PS9553 are ideal for
AC or DC motor control applications. The devices consist of an optically coupled
isolator with a GaAlAs LED and a high output voltage and current. Features of
the devices include a high output current of 2.0 A (PS9552) and 0.5 A (PS9553).
Additional characteristics include a transmission speed of 1 Mbit/s, 5000 VRMS
isolation voltage, > 0.4 mm isolation distance and > 8 mm outer creepage
distance. With 15 kV/μs common mode ratio (CMR), the device has an excellent
value for this particularly critical parameter. Furthermore, with an operating
voltage range from 15 V to 30 V and an operating temperature range from 40°C to
+100°C, the optocouplers PS9552 and PS9553 are very flexible in their usage.
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