Datasheet ASCell3911 Datasheet (Austria Mikro Systeme International)

ASCell3911

ISM 868 MHz, 433 MHz and 315 MHz
FSK Transmitter

Preliminary Data Sheet

ISM 868 MHz, 433 MHz and 315 MHz FSK Transmitter – Preliminary Data Sheet

1

ASCell3911

Austria Mikro Systeme International AG

Key Features

• Supports triple band operation: Europe 868 MHz and 433 MHz-, US and Japan 315 MHz ISM
band.

• Designed to be conform to EN 300 220, and FCC 47 CFR Ch.1 par.15 requirements.

• Provides highly reliable packet oriented data transmission in blocks of 128 bit.

• Event oriented single message transmission and status oriented and continuous message

transmission supported.

• Special transmission protocol for high reliability even in presence of burst interferer (e.g.
GSM) implemented.

• Supports clock for an external µC and allows clock free total shut down of the whole sy stem.

• Wide supply range between 2,2 to 3,5 V.

• Low TX current, typical 8,5 mA @ 2,2 V.

• Low standby current, typical 0,5 µA.

• Wide operating temperature range from –40 °C to +85 °C.

• Only a low cost XTAL for 25 ppm (868 MHz) or 50 ppm (433 and 315 MHz) reference fre-

quency tolerance required.

• Typically only 1 XTAL, 4 capacitors and 2 inductors externally required.

General Description

The ASCell3911 is a low power, triple ISM band (868 / 433 / 315 MHz), single channel FSK
transmitter designed to work in a remote control link together with the SC3912 receiver system
cell.
The ASCell3911 performs packet oriented data transmission, in a single message- or continuos­message mode using a special protocol to ensure high reliability even in presence of strong
pulsed interferers in close adjacent bands like e.g. GSM.
It contains a general bi-directional five line micro-controller (µC) interface to support the µC with
clock- and reset- signal and to operate the highly efficient power up/down management includ­ing. This allows e.g. a clock-free total shut-down of the whole transmitter system.
As external components the ASCell3911 need only a reference XTAL, 4 capacitors and up to 2
inductors.

Applications

• Key-less car entry systems.

• Short-range packet oriented data transmission.

• Security applications and alarm systems.

• Domestic remote control systems.

• Industrial remote control systems.

• Remote metering.

VDD14RF+

RF-

PAGND

RESET/TEST

XTAL
VDDSYN
GNDSYN

This pin-out is preliminary and will change for the real implementation!

Rev. A, February 2000 Page 2 of 13

ASCell3911

TSSOP-14

DATA13
D_CLK12
D_EN11
WAKEUP10
µC_CLK
GND

ISM 868 MHz, 433 MHz and 315 MHz FSK Transmitter – Preliminary Data Sheet

+

ASCell3911

This document contains information on products under development. Austria Mikro Systeme International AG reserves the right to
change or discontinue this product without notice.

Austria Mikro Systeme International AG

1 Functional Description

The ASCell3911 consists at the RF side of a reference XTAL oscillator, a single channel RF­synthesizer, an I/Q based direct conversion FSK modulator, a driving amplifier. On the digital
side the pulse interference resistant protocol encoder and a µC interface, including microproc­essor clock divider and a sophisticated power up/down circuitry are implemented.

VDD

f =868.3 MHz

RF+

RF-

PAGND

VDDSTN

GNDSYN

Driving

Amplifier

Quadrature

Up Converter

90°

VCO

Synthesizer

ASCell3911

Figure 1: Block diagram of the ASCell3911.

Baseband

Filters

64:1/32:1/16:1

Loop-

Filter

Divider

Sin /Cos

Generator

Phase

Detector

RESET/TEST

Protocol
Encoder

Transmit.

Timing

Control

Register

Clock

XTAL

Oscillator

Po

µC

we

Int

r

erf

up

ac

/d

e

ow

13.5672 MHz
XTAL

D_CLK

D_EN

DATA

WAKEUP

µC CLK

VDD

GND

1.1 RF Synthesizer

Frequency synthesis is performed by a single channel synthesizer, consisting of a phase de­tector, a charge pump, a voltage-controlled oscillator (VCO), and a feedback divider. The VCO is
working at 315,000 to 868,300 MHz. The feedback divider divides by 16 (315,00 MHz), 32
(433,920 MHz) or 64 (868,300 MHz). The different ISM bands are selected by different XTAL fre­quency values F
of the different frequencies is given in Table 1.

Table 1: Quartz and RF output frequencies.

Rev. A, February 2000 Page 3 of 13

and the CRYSTAL and RANGE control bits. A truth table for the selection

XOSC

F

/ MHz Multiplier CRYSTAL RANGE FC/ MHz

XOSC

19,6875 16 H L 315,000
13,5600 32 L L 433,920
13,5672 64 L H 868,300
not used H H not used

ISM 868 MHz, 433 MHz and 315 MHz FSK Transmitter – Preliminary Data Sheet

15

Word Pattern in Data Packet

Data Packet

15

SYNC

Bit Pattern for SYNC

. . . 0 1 0 1 0 1

Data Packet

15

SYNC

12.28 ms

13.81 ms

ASCell3911

Note: CRYSTAL and RANGE are bits of the control information.

Austria Mikro Systeme International AG

1.2 Microprocessor Clock

The microprocessor clock frequency F
4 if CRYSTAL is ´L´ and by dividing the XTAL frequency F

Note: CRYSTAL is one bit of the control information.

is generated by dividing the XTAL frequency F

CLK

by 6 if CRYSTAL is ´H´.

XOSC

XOSC

by

1.3 Modulation

The SC3011 uses FSK modulation with a frequency deviation of ≈60 kHz at a gross data rate
from 18,25 kbit/s for the 868,300 MHz ISM band.
In the transmitter, the data from the pulse interference resistant protocol encoder is first trans­formed into a complex base-band signal in the sin/cos block. After filtering it is shifted up to RF in
an I/Q based direct conversion transmitter.

1.4 Burst interference Resistant Protocol Encoder

In order to avoid disturbance due to pulsed interferes, e.g. GSM phones, the net data block is
encoded with a special protocol. Up to two simultaneous GSM disturbers can be handled by
adding redundancy to the FSK data in a suitable manner.
The 128 bits of a message (net data block) are put into a transmission sequence that alternates
a synchronization packet and data packet at transmission as shown in Figure 2.
To form a data packet, the 128 bit net data the information is split in 16 bytes where a bytenum­ber and a parity is added to generate 14 bit words. Therefore the 128 bits of net data are ex­panded to the 224 bit long (gross) data packet. The synchronization packet is simple 0101­sequence of 252 bit.

Transmission Protocol

0-1-Sequence

W0 W1 W2 W3 W4 W5 W6 W7 W8 W9 W10 W11 W12 W13 W14 W

0 1 0 1 0 1 . . .

Figure 2: Transmission protocol of the ASCell3911.

W0 . . . W

0-1-Sequence

W0 . . . W

Rev. A, February 2000 Page 4 of 13

ISM 868 MHz, 433 MHz and 315 MHz FSK Transmitter – Preliminary Data Sheet
ASCell3911

Austria Mikro Systeme International AG

1.4.1 Duty-Cycle Operation

In certain countries, it is required to reduce the average transmit power but it is allowed to keep
the peak power high. Therefore a duty-cycled operation mode is implemented in the ASCell3911.
By selecting this operation mode, the duty cycle of the transmit signal is set to 50%, related to an
observation interval of 10 ms. This function is be implemented in the burst interference resistant
protocol encoder. The duty cycle operation is set via the bit duty cycle operation (DCO).

Note: DCO is one bit of the control information.

1.4.2 Transmission Modi

The ASCell3911 supports two different transmission modii:

• The event oriented Single Message Transmission (SMT) where four times alternate syn-
chronization and data packets are transmitted. Due to the limited transmission time this
mode needs less power than CMT but supports no direct information about the duration of a
transmitted command. The bit SMT/CMT is “L” for this mode.

• The status oriented Continuous Message Transmission (CMT) where alternate synchroniza-
tion and data packets are transmitted as long as one button is pressed. This mode is less
power efficient than SMT but the duration of a command can be directly transported by the
duration of the transmission power. The bit SMT/CMT is “H” for this mode.

Note: SMT/CMT is one bit of the control information.

1.5 Driving Amplifier

The driving amplifier has a differential open collector output optimized for driving of small, sy m­metrical high-impedance loop antennas. The amplifier drives a nominal RF current of 1 mA

RMS

.
The maximal differential voltage swing is about 2,8 VPP. Therefore, the output power is a function
of the connected load impedance. With a 2 kΩ differential load a nominal peak output power (to

the antenna) of ≈2 mW is obtained. Please note that the finally radiated power (from antenna) is
lower and strongly dependent on the efficiency (function of the size) of the antenna to be used.

1.6 µC Interface and Power Management

The ASCell3911 contains a direct interface to a micro controller (µC). The µC interface of the
ASCell3911 consists of the following five pins:

”Transmit data input” (DATA).
“Active ”H” transmit data enable” (D_EN).
”Transmit data clock input” (D_CLK).
”Active ”L” µC reset output/transmitter wakeup end input” (WAKEUP).
”µC clock output/active ”L” start-up input” (µC_CLK).
These lines support the µC with the required reset and clock signals and control the ASCell3911

internal power on/off circuit, which wakes up and shuts down the whole transmitter consisting of
the ASCell3911 and the µC.

Figure 3 shows a typical interconnection of the ASCell3911 with a typical µC. Figure 4 presents
a related timing for power up and down of the transmitter.

Rev. A, February 2000 Page 5 of 13

ISM 868 MHz, 433 MHz and 315 MHz FSK Transmitter – Preliminary Data Sheet

SW

µC_CLK

WAKEUP

P4

standby

startup

standby

SC3911

reset µC

ASCell3911

µC

ASCell3911

DATA

I

SERIAL DATA OUT (P1)

O

Austria Mikro Systeme International AG

D_EN I

D_CLK I

WAKEUP

µC_CLK

10k

I/O

I/O

SERIAL DATA ENABLE (P2)

O

SERIAL DATA CLOCK (P3)

O

O

STOP TRANSMIT (P4)

I

NCLEAR

CLK

I

10k

SW

Transmit

button

Figure 3: Interconnection of the ASCell3911 with a typical µC with one button to wake up the whole

system (example).

Note: At room temperature, resistor values of ≈10 kΩ are suggested for the µC interface.

open
closed

32 clocks 16 clocks

µC

active/transmisson

µC SC3911startup

4 clocks

power

down µC

Figure 4: µC interface timing for wake-up and power down control.

Note: The dashed lines indicate weak high or low state when the µC_CLK or WAKEUP output of the ASCell3911 is disabled

(in high-resistive Z state) and pulled ”H” or ”L” by the internal pull-up device or by the µC via a resistor. These weak
states can be overridden by the ASCell3911 if the respective outputs are enabled. Whenever a line is pulled via an ex­ternal resistor, however, this should override the internal pull-up devices of the ASCell3911.

1.6.1 Interface Description

It is assumed that the µC remains in low power standby mode as long as the P4 pin is kept ”L”
and no clock cycles are applied.
Standby: During standby (default after VCC-on) the XTAL oscillator is turned off and ASCell3911
holds the µC in a reset state:

Rev. A, February 2000 Page 6 of 13

ISM 868 MHz, 433 MHz and 315 MHz FSK Transmitter – Preliminary Data Sheet

DATA

D_CLK

TX-State

transmission

transmission

wt

bit

D_EN

TweT

et

ASCell3911

Austria Mikro Systeme International AG

The ASCell3911 WAKEUP pin is active and set to ”L”, holding the µC in reset state. In standby
mode the ASCell3911 WAKEUP internal pull-up is disabled and does not drain current from the
supply.
The ASCell3911 µC_CLK output is disabled, (in high resistive ”Z” state) and internally pulled up
to ”H”.
(Re)starting the transmitter: Closing the push button (giving a falling edge on µC_CLK line)
starts up the ASCell3911. It turns on its XTAL oscillator and after the oscillator start up phase it
turns the µC_CLK pin to active (CMOS level) mode and provides a clock to the µC.
After a delay of 32 µC clock cycles the WAKEUP pin of the ASCell3911 is set to ”H” for 16 clock
cycles. The transmitter is now in active mode. The WAKEUP acts in ASCell3911 active mode
as an input waiting for a ”L” to trigger the transmission of the transmitter to standby mode
During this active mode the µC sends the 132 bit data (8 bit control and 16 * 8 bit data) on the
µC - P1 (Serial data out) line.
The timing of the microcontroller interface is shown in Figure 5. The microcontroller clocks a
134-bit Data into the ASCell3911 for data encoding. This data consists of 6 control bits followed
by 128 transmit data bits. After the data bock has been completely transferred to the A S­Cell3911, it starts up transmission, during which the I/Q modulator and power amplifier are pow­ered up in order to transmit the encoded data. Transmission is done with respect to the control
bits. Table 2 shows the control bits set different operation modes of the chip.

P4

t

wake up

start

stop

Figure 5: µC interface timing for data transmission when ASCell3911 and µC are active.

Note: Figure 4 shows the timing for the CMT-mode where the controller sets P4 to “L” and so the transmission stops. The

broken line shows the Signal P4 in the SMT mode where the ASCell3911 stops the transmission.

Control bit description:

bit# Name Comments
1 Quartz crystal (“CRYSTAL”): L=13,5600 / 13,5672MHz

H=19,6875 MHz

2 Operating frequency range (“RANGE”): L=315/433MHz,

H=868,3MHz

3 Duty cycle operation (“DCO”) L = OFF

H = ON

4 Single / Continuous Message Transmission

(“SMT/CMT”)

L = SMT
H = CMT

Rev. A, February 2000 Page 7 of 13

ISM 868 MHz, 433 MHz and 315 MHz FSK Transmitter – Preliminary Data Sheet
ASCell3911

5 GP
6 GP

Table 2: Control bit description.

Austria Mikro Systeme International AG

Single message transmission: After completing the data transmission to the ASCell3911, the

µC may indicate ”end of transmission” by setting P4 (not end of transmit) to ”L” and pulls the
WAKEUP line to ”L”. Sensing this, 4 clock cycles later the ASCell3911 will switch the µC back to
standby mode, disabling the µC_CLK output, setting the active WAKEUP pin to ”L”. The A S­Cell3911 will finish the transmission sequence and than turning off the XTAL oscillator to and
goes back to the standby mode too. The SMT/CMT bit is ”L” indicates the single transmission
mode.

Note: SMT/CMT is one bit of the control information.

Continuous message transmission: After completing the data transmission to the AS­Cell3911, the µC may indicate ”end of transmission” by setting P4 to ”L” and pulls the WAKEUP
line to ”L”. Sensing this, 4 clock cycles later the ASCell3911 will switch back to standby mode,
disabling the µC_CLK output, setting the active WAKEUP pin to ”L” and than turning off the XTAL
oscillator. The SMT/CMT bit is ”H” indicates the continuous transmission mode.

Note: SMT/CMT is one bit of the control information.

Due to the sophisticated tri-state - active/inactive pull-up configuration of the WAKEUP pin the
ASCell3911 does not drain current during its standby periods.
The interface implemented in the ASCell3911 system cell is a general, non-specialized example
only. It can be modified on customers demand.

2 Electrical Characteristics

2.1 Absolute Maximum Ratings (non operating)

Symbol Parameter Min Max Units Note
VDD; VDDSYN Positive supply voltage -0,5 6 V
GND; GNDSYN Negative supply voltage 0 0 V
Vin Voltage at every input pin Gnd-0,5 VCC+0,5 V
Iin Input current into any pin except

supply pins
ESD Electrostatic discharge 1k V
ESD

IN

Tstg Storage temperature -55 125 °C
Tlead Lead temperature 260 °C

Electrostatic discharge of RF pins 500 V

-10 10 mA Latch-up Test

1) 3)

1) 4)

2)

1) Test according to MIL STD 883C, Method 3015.7. HBM: R=1,5 kΩ, C=100 pF, 5 positive pulses per pin against supply pin(s), 5
negative pulses per pin against supply pin(s).

2) 260 °C for 10 s (Reflow and Wave Soldering), 360 °C for 3 s (Manual soldering).

3) All pins except RF+, RF-, XTAL.

4) Pins RF+, RF-, XTAL.

Rev. A, February 2000 Page 8 of 13

ISM 868 MHz, 433 MHz and 315 MHz FSK Transmitter – Preliminary Data Sheet
ASCell3911

Austria Mikro Systeme International AG

2.2 Operating Conditions

Symbol Parameter Conditions / Notes Min Typ Max Units
VDD Positive supply voltage 2,2 3,5 V
GND Negative supply voltage 0 0 0 V
TA Operating temperature -40 85
ICC Current consumption VCC= 3,5 V

VCC= 3,0 V
VCC= 2,2 V

ICC

SD

Standby current low voltage reset circuit active 0,5 µA

10

9

8,5

12
11
10

°C

mA
mA
mA

Rev. A, February 2000 Page 9 of 13

ISM 868 MHz, 433 MHz and 315 MHz FSK Transmitter – Preliminary Data Sheet
ASCell3911

Austria Mikro Systeme International AG

2.3 FSK Operation

TA = 23 °C, VDD, VSYN = 2,7 V, unless specified otherwise. Device functional for TA= -40 to
+85 °C.

Symbol Parameter Conditions / Notes Min Typ Max Units
F

C

Carrier frequency Depends on different external

crystals.

∆F FSK frequency deviation 315,000 MHz:

433,920 MHz:
868,300 MHz:

F

xosc

Crystal oscillator (XOSC)
frequency

315,000 MHz, Crystal=H
433,920 MHz, Crystal=L
868,300 MHz, Crystal=L

FT

xosc

Crystal oscillator (XOSC)
fequency tolerance

315,000 M: (-40~+85 °C),
433,920 MHz: (-40~+85 °C),

868,300 MHz: (-40~+85 °C)
D
P

R,gross

out

Gross data rate Including burst protocol. 18,235
Available output power,

into Z

= 2000 Ω differ-

out

ential

315,000MHz (USA),

433,920 MHz

868,300 MHz

315MHz (Japan) - set through

RPA???
T

abTX

Time between two differ­ent transmitted mes­sages “a”&“b”

1) @ 868,300 MHz: D

@ 433,920 MHz: 18,225 kbps.
@ 315,000 MHz: 19,226 kbps.

2) Antenna dependent - will not be production tested.

= 13,5672 MHz / 46,5 / 16 = 18,235 kbps.

R,gross

315,000
433,920
868,300

-68,4

-61,7

-61,7

+68,4
+61,7
+61,7

19,6875
13,5600
13,5672

50
50
25

1)

-1,5
–1,5
–3,0

0,0
0,0

-1,5

+1,5
+1,5
+0,0

-20?

30 ms

MHz
MHz
MHz

kHz
kHz
kHz

MHz
MHz
MHz

ppm
ppm

ppm
kbps
dBm

dBm
dBm
dBm

2.4 Digital Pin Characteristics

TA = 23 °C, VDD = 2,7 V, unless specified otherwi se. GND is the 0 V reference.
Input parameters for bi-directional pins (µC_CLK, WAKEUP) are valid at disabled outputs.

Symbol Parameter Conditions Min Typ Max Units

µC_CLK (µC clock output / wake-up input)

VOH High level output voltage IOH =-1 mA VDD-0,5 - V

VOL Low level output voltage IOL =1 mA - 0,3 V

tr Rise time CLoad = 10 pF 20 ns

td Fall time CLoad = 10 pF 20 ns

jcc Cycle to cycle jitter +/-5 %

VIH High level input voltage VDD-0,5 - V

VIL Low level input voltage - 0,3 V

IIH High level input current VIH = VDD 1 µA

IIL Low level input current VIL =0 V; Due to in-

ternal pull-up

Rev. A, February 2000 Page 10 of 13

-40 µA

ISM 868 MHz, 433 MHz and 315 MHz FSK Transmitter – Preliminary Data Sheet
ASCell3911

Austria Mikro Systeme International AG

DATA(serial data input), D_EN (serial data enable input), D_CLK (serial data clock input)

VIH High level input voltage VDD-0,5 - V

VIL Low level input voltage - 0,3 V

IIH High level input current VIH= VDD 1 µA

IIL Low level input current VIL =0 V -1 µA

WAKEUP (µC clear output / transmitter power down input)

VOH High level output voltage IOH = -1mA VDD-0,5 - V

VOL Low level output voltage IOL = 1mA - 0,3 V

VIH High level input voltage VDD-0,5 - V

VIL Low level input voltage - 0,3 V

IIH High level input current VIH = VDD 1 µA

IIL Low level input current VIL =0 V; Due to

-40 µA

internal pull-up

2.4.1 µController Interface

Symbol Parameter Conditions / Notes Min Typ Max Units
T

bit

T

we

T

ed

T

de

FSK Data Bit duration tbd s
Time between Wake up and Data

Enable
Time between Data Enable and

Data
Time between Data and Data

Data input prepared to

tbd s

receive data
Data input prepared to

tbd s

receive data
Start-up and lock PLL tbd s

Enable

T

et

Time between Data Enable and

Start-up and lock PLL tbd s

Transmit

T

wt

Time between Wake up and

tbd s

Transmit start

T

ca

V

POR

T

POR

VCCmin

Time that CLK output stays ac­tive after T

wt

Power-On-Reset threshold volt­age

RESET invalid when Vdd <
VCCmin

POR

1,6 1,8 V

tbd s

Power-On-Reset duration 2 10 ms
Minimum Supply Voltage for valid

POR

1,2 V

Power-On-Reset output

3 Pin Description

Note: pin ordering is preliminary - will be fixed at fab-in.

Pin Name Type Description
1 RF+ A Power amplifier output (open collector)
2 RF- A Power amplifier output (open collector)
3 PAGND P Power amplifier ground

Rev. A, February 2000 Page 11 of 13

ISM 868 MHz, 433 MHz and 315 MHz FSK Transmitter – Preliminary Data Sheet

G. Schultes, ISM868_TX

Revision: 0, 99 07 16

Transmit.

Phase Detector

PAGND

DVCC

DGND

DVCC

DGND

GNDSYN

ASCell3911

Pin Name Type Description

Austria Mikro Systeme International AG

4 RESET /

TEST

O Power-On-Reset output

Test output in test mode
5 XTAL A XTAL oscillator input
6 VDDSYN P PLL, mixer positive supply
7 GNDSYN P PLL, mixer, negative supply
8 GND P Negative supply of DC/DC, POR, LBAT, XOSC, Data Interface, SinCos
9 uC_CLK O Clock output for micro-controller
10 WAKEUP I Wake-up signal, pos. edge wakes up the chip, negative edge stops transmis-

sion
11 D_CLK I Data clock, data is clocked into the chip with negative edge of DCLK
12 D_EN I Data enable, high while data is clocked into the chip
13 DATA I Data input for 128 bits of FSK data preceeded by 8 control bits
14 VDD P Positive supply of DC/DC, POR, LBAT, XOSC, Data Interface, SinCos

4 Application Schematic

DC to 80 kHz

f =868.300 MHz

R F

Implementation

Example

RF+

RF-

RF_LO = f

R F

DRA QUC 2*BBF

Driving

Amplifier.

Quadrature

Up Converter

0° 90°

+/-45°

Baseband

Filters

SCG

Sin / Cos

Generator

Protocol
Encoder

Timing

XTOVCO LPF DIV PHD

Clock

D_EN
D_CLK

DATA

WAKEUP

µC_CLK

Reset/Test

Oscillator

VDDSYN

VDDSYN

Local

Loop-filter

GNDSYN

f/64

XTAL

Oscillator

XTAL

Figure 6: Basic application schematic of the ASCell3911.

Rev. A, February 2000 Page 12 of 13

ISM 868 MHz, 433 MHz and 315 MHz FSK Transmitter – Preliminary Data Sheet
ASCell3911

5 Package Information

Austria Mikro Systeme International AG

Figure 7: Physical dimensions of TSSOP-14.

Symbol Common Dimensions

Minimal (mm/mil) Nominal (mm/mil) Maximal (mm/mil)

A - - 1,10/0,0433

A1 0,05/0,002 0,10/0,004 0,15/0,006

b 0,19/0,0075 - 0,30/0,0118

D

e 0,65 BSC

E 6,25/0,246 6,40/0,252 6,50/0,256

E1 4,30/0,169 4,40/0,173 4,50/0,177

L 0,50/0,020 0,60/0,024 0,70/0,028
α 0° 4° 8°

ASCell's are functional and in-spec circuits, which are usually available as samples with documentation and demoboard. Ho w ­ever they are intentionally to be used as a basis for ASIC derivatives. If an ASCell fits into a customer's application as it is, it will
be immediately qualified and transfered to an ASSP to be ordered as a regular AS product.

Copyright  2000, Austria Mikro Systeme International AG, Schloß Premstätten, 8141 Unterpremstätten, Austria.
Telefon [phone], Telefax [phone], E-Mail [e-mail]
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by
any means, without the prior permission in writing by the copyright holder. To the best of its knowledge, Austria Mikro Systeme
International asserts that the information contained in this publication is accurate and correct.

Rev. A, February 2000 Page 13 of 13