Datasheet AS2701AT, AS2701A Datasheet (Austria Mikro Systeme International)

AS2701A (ISA3+)
AS-Interface Slave IC

Data Sheet
Rev. C, October 2000

AS-Interface Slave IC
AS2701A (ISA3+)

Key Features

• Simple two-wire bus (AS-Interface line)

• Transmission of both power and signal on the AS-Interface line

• Decoupling of power and signal by the IC without additional external devices

• Transmitting protocol for using the IC and the AS-Interface master in the trans-

mit/receive modes

• Switching of max. 31 AS-Interface slave ICs on one bus possible

• Power supply of peripheral devices from the AS-Interface slave IC of up to 35mA@24V

• Only few external devices necessary for operation (quartz, 4 capacitors, E2PROM)

• Storing of the configuration data and the slave address in one E2PROM

• Quartz oscillator for 5.333 MHz without external capacitances

• Standards: AS-Interface–Spec V2.0 and EN 50295

General Description

The signal transmission between the master and the slaves in the AS-Interface system is

performed by a parallel two-line wire (AS-Interface line) to which the IC is connected only via a
polarity protection diode and a suppressor diode. The line is powered by a direct dc voltage of
up to 33.1 V, on which data pulses with signal amplitudes of (3...8) Vpp are superimposed.
The IC extracts its own power and the power for peripherals from the line and detects the bus
signals.

The AS-Interface slave IC consists of the following blocks:

• Receive Block

• Transmit Block

• Digital Logic Block

• Emergency Control Block

• Internal and External Power Supply with Signal decoupling

• Oscillator

• Power on Reset

• High Voltage I/O

Block Diagram

TEST

LTGP

Emergency and

Control Block

LTGN

switch

Temperature

Transmit Block

Receive Block

Power-On

Reset

Internal Power

Supply

imp_pos, imp_neg

Oscillator

OSC1

OSC2

Signal Decoupling
Ext. Power Supply

E2-Interface

Digital

Block

HV-

I/O

Rev. C, October 2000 Page 2 of 16

CDC

UOUT

U5R
SCL

SDA

D0...D3
DSTBn
P0...P3
PSTBn

AS-Interface Slave IC
AS2701A (ISA3+)

Package

SOIC20

Pin Description

D3
D2
D1
D0

DSTBn

U5R

TEST

SCL
SDA

LTGN

1
2
3
4
5
6
7
8
9

10

20

P3

19

P2

18

P1

17

P0

16

PSTBn

15
14
13
12
11

OSC2
OSC1

UOUT

CDC

LTGP

Pin Name Type Description

1 D3 I/O Data input/output 3, configurable
2 D2 I/O Data input/output 2, configurable
3 D1 I/O Data input/output 1, configurable
4 D0 I/O Data input/output 0, configurable
5 DSTBn I/O Strobe output for the data port,

input for a reset signal (active low)

6 U5R Voltage OUT Supply voltage of the E2PROM,

Blocking capacitor CU5R
7 TEST IN Connection to the capacitor CTEST
8 SCL OUT Serial two-wire bus, puls wire
9 SDA I/O Serial two-wire bus, address and data wire

10 LTGN SUPPLY AS-Interface wire, negative supply
11 LTGP SUPPLY AS-Interface wire, positive supply
12 CDC Voltage OUT Blocking capacitor CCDC
13 UOUT Voltage OUT Peripherals
14 OSC1 IN Quartz connection
15 OSC2 OUT Quartz connection
16 PSTBn OUT Strobe output for the parameter port, test mode

(without importance for users)

17 P0 OUT Parameter output 0
18 P1 OUT Parameter output 1
19 P2 OUT Parameter output 2
20 P3 OUT Parameter output 3

Rev. C, October 2000 Page 3 of 16

AS-Interface Slave IC
AS2701A (ISA3+)

Functional Description

The IC identifies and decodes the supply voltage overlapping signals of the master telegram. If
the slave address contained within the master telegram coincides with the stored information
in the E2PROM of the slave address, the corresponding master command of the addressed
AS-Interface slave IC is executed.

After decoding of the master telegram the addressed AS-Interface slave IC responds with a
corresponding slave answer on the AS-Interface line.

The AS-Interface slave IC extracts its own supply voltage and the supply voltage for the
E2PROM from the AS-Interface line. At the same time, the IC provides a direct voltage for the
peripheral UOUT which results from U

LTGP-UDROP

The receive block detects the signal on the AS-Interface wire LTGP. The reference voltages of
the signal comparators are (52.5 ± 5) % of the maximum signal value and are controlled by a
peak value detector in the following mode: The comparator level is set to its default value by
Reset or if a non-correct signal is received.

for a maximum current of 35 mA.

If a line pause is detected, the level reset is released and the IC is able to adapt itself to
different signal levels. If the IC is not synchronized yet, the level adaption is faster (smaller
attack and decay time constants) as in the synchronous case.

The output information of the receive blocks are the signals: "imp_pos" and "imp_neg".
The transmit block drives the output level for the modulated transmit signal edges. The

transmit block consists of the NMOS transistor (transmit transistor), DAC for transmit signal
formation and a Jabber-Inhibit Circuitry. The DAC is addressed by the digital block. If the
transmitter is active more than typ. 300µs the Jabber-Inhibit circuit separates the IC from the
AS-Interface line. This condition can only be left by a Power-On-Reset.

In the digital block the received signal is analyzed, the transmit signal is generated and the
data and parameter ports as well as the E2PROM interface are driven. The E2PROM interface
acts as a serial two-wire interface with the following transmission streams:

SDA S

1 10 0 A2 A1 A0 0

Byte Write Cycle

1 10 0 A2 A1 A0 0

Byte Read Cycle

Device-Address Byte-Address

ACK

R/W

Device-Address Byte-Address

ACK

R/W

ACK

ACK

Data

Device-Address

1 10 0 A2 A1 A0 1

ACK

R/W

P

ACK

Data

PSSDA S

ACK

After the AS-Interface slave IC has sent the START condition, the device address is
transmitted. This address would allow the selection of a maximum of 8 possible E2PROM ICs,
is however fixed to 000 by the AS-Interface slave IC. Therefore in the application pins AO...A2
of the E2PROM are connected to Uss.

Rev. C, October 2000 Page 4 of 16

AS-Interface Slave IC
AS2701A (ISA3+)

Write Cycle

After the device address, the write cycle R/W-Bit=0, necessary for the identification of the write
cycle, is sent. The E2PROM acknowledges the correct receipt with the acknowledge bit ACK.
Then the data byte which should be written into the E2PROM reacknowledges with an ACK
signal of the E2PROM. The STOP condition ends the cycle.

Read Cycle

The read cycle is similar to the herein described write cycle. In this case the R/W-Bit = 1 which
causes the E2PROM to place read data for the received Byte address on the bus after the
acknowledge.

SDA

SCL

START

Condition

STOP

Condition

The START condition is recognized by the E2PROM when a H/L edge arises on the dataline
SDA during the high phase of the clock.

The STOP condition is present when a L/H edge arises on the dataline SDA during the high
phase of the clock SCL. The timing of the E2PROM interface is derived from the AS-Interface
quartz frequency of 5.333 MHz.

Rev. C, October 2000 Page 5 of 16

AS-Interface Slave IC
AS2701A (ISA3+)

Functional, electrical and timing characteristics

All voltages are referenced to LTGN = 0V, timing is valid for a clock frequency of 5.333 MHz.

a) Absolute Maximum Ratings

Symbol Parameter Min Max Unit Note

VLTGP Positive Voltage - 0.3 40 V 1
VLTGPOV Positive Impulse Voltage 50 V 2
Vin1 Voltage at D0…D3, P0…P3,

DSTBn, PSTBn, CDC, UOUT,
TEST

Vin2 Voltage at OSC1, OSC2, SDA,

SCL, U5R

Iin Input Current on every Pin -25 25 mA
H Non-Condensated Humidity 3
ESD Electrostatic Discharge 1000 V 4

θSTG
θlead

Ptot Power Dissipation 1 W 6
Notes:

1 A polarity protection diode is to be used externally
2 Impulse width: ≤ 50 µs; repetition rate: ≤ 0.5 Hz

3 Defined in DIN 40040 cond. F
4 HBM; R = 1.5 kΩ; C = 100pF

5 260 °C for 10 s (reflow and wave soldering), 360 °C for 3 s (manual soldering)
6 SOIC 20: Rthja = 64.5 °K/W typ.

Storing Temperature -55 125 °C
Soldering Temperature 260 °C 5

VLTGN - 0.3 VLTGP + 0.3 V

VLTGN - 0.3 7 V

Vin ≤ 40V

b) Recommended Operating Conditions

Symbol Parameter Min max Unit Note

VLTGP1 Positive Voltage 26.9 33.1 V 1
VLTGP2 Positive Voltage for Sensor

Applications
ILTG Operating Current @ VLTG = 30 V 6 mA 3
IOL Max. Operating Current @ D0…D3,

DSTBn
IOL Max. Output Current @ P0…P3,

PSTBn
fC Quartz Frequency 5.333 MHz 4
θamb
Notes:
1 DC Parameter; VLTGP1min = VUOUTmin + VDROPmax;
VLTGPmax = VUOUTmax + VDROPmin
2 DC Parameter; VLTGP2min = VCOMOFFmax + VDROPmax
3 fC = 5.333 MHz, no load on UOUT and U5R, IC in idle mode
4 “AS-Interface-Quartz”

Operating Temperature -25 85 °C

17.5 33.1 V 2

10 mA
6 mA

Rev. C, October 2000 Page 6 of 16

AS-Interface Slave IC
AS2701A (ISA3+)

c) Power Supply Pins LTGP and LTGN (LTGN = 0 V-reference)

The AS-Interface Slave IC's input at LTGP behaves as if a resistor RP and a (non-linear)
parallel capacitor CP connect LTGP to LTGN.

LTGP input impedance over frequency is as follows:

RP CP F

≥ 10 kOhm ≤ 35 pF
≥ 10 kOhm ≤ 45 pF
≥ 10 kOhm ≤ 48 pF
≥ 10 kOhm ≤ 51 pF
≥ 10 kOhm ≤ 54 pF
≥ 10 kOhm ≤ 60 pF

50 kHz
100 kHz
125 kHz
160 kHz
200 kHz
300 kHz

d) Data and Parameter Ports (D0...D3, DSTBn; P0...P3, PSTBn)

These pins are equipped with both an input and output channel as well as a current source
based pull-up structure; the I/O-circuit at these pins and their DC-characteristics @ output
channel 'Off' are described below.

The AS-Interface slave system concept requires D0...D3 and DSTBn to be bidirectional pins
and P0...P3 and PSTBn to be outputs.

The input channel on pins P0...P3 and PSTBn is only implemented to simplify the AS-Interface
Slave IC's device test, and is not intended to be used in AS-Interface Slave system applica­tions.

U5R

11 µA typ

II[µA]

0

-5

-10

-15

D0..D3
DSTBn
P0..P3
PSTBn

LTGN

-20

40 10 20 30 40

VI[V]

Rev. C, October 2000 Page 7 of 16

AS-Interface Slave IC
AS2701A (ISA3+)

Symbol Parameter min max Unit Note

VIL Input Voltage “Low” 0 1.5 V
VIH Input Voltage “High” 3.5 VUOUT V
VHYST Input Hysteresis 0.25 0.5 V 1
VOL11 Output Voltage 0 1 V IOL11 = 10mA

D0…D3, DSTBn

VOL12 Output Voltage 0 1 V IOL12 = 6mA

P0…P3, PSTBn
VOL2 Output Voltage 0 0.4 IOL2 = 2mA
IIL Input Current -20 -5 µA VIL = 1V, Output “off”
IIH Input Current -10 10 µA VU5R ≤ VIH ≤ 40V

Output “off”
CDL Loading Capacitance

10 pF 2

on DSTBn
Notes:
1 Switching points approx. 2.5 V, i.e. 2.5 V ± VHYST
2 For larger capacitive loads an external Pull-Up-Resistor to UOUT must be used, so that
the beginning of the DSTB = LOW impulse of VIH ≤ 3.5 V to DSTBn is reached in less than
35 µs, otherwise a reset is the result.

Timing characteristics

Symbol Parameter min max Unit Note

t

DSTBL

t

DSTBH

t

DATA

t

DSTB

t

DINon

t

DINoff

t

CYCLE

t

ALM1

t

ALM2

Note 1: Data valid until DSTBn L/H-edge

DSTBn to D0…D3, Direction OUT,

1 µs
Output Data LOW
DSTBn to D0…D3, Direction OUT,

1.5 µs
Output Data HIGH
DSTBn to D0…D3, High Resistive 6.2 7 µs 1

DSTBn Pulse Width 6 6.8 µs
DSTBn to D0…D3, Direction IN, Valid

6.5 7.7 µs
Input Data
DSTBn to D0…D3, End of Direction IN 12.5 t CYCLE µs

Next Cycle 150 µs
Extension DSTBn to D0…D3, High

44 µs
Resistive
Extension DSTBn (No Reset) 35 µs

Rev. C, October 2000 Page 8 of 16

AS-Interface Slave IC
AS2701A (ISA3+)

D0..D3

D0..D3

D0..D3

D0..D3

D0..D3

t

DINoff

data in

t

DINon

t

DSTBL

data out LOW

data out HIGH

t

DSTBH

t

DSTBL

data out data in

t

DATA

t

DINon

t

DINoff

t

DSTBH

data out data in

HI-Z

HI-Z

HI-Z

Direction of Input

HI-Z

Direction of Output

HI-Z

HI-Z

Bidirectional

HI-Z

DSTBn

DSTB
(ext. LOW)

t

DSTB

t

ALM2

t

ALM1

t

CYCLE

(t

RESET1

)

Rev. C, October 2000 Page 9 of 16

AS-Interface Slave IC
AS2701A (ISA3+)

e) Interface to the ext. E2PROM (U5R, SCL, SDA) / functional,

electrical and timing characteristics

Symbol Parameter min max Unit Note

VU5R Output Voltage to E2PROM 4.5 5.5 V

IU5R ≤ 3 mA
CU5R Load Capacity to U5R 10 220 nF Ceramics capacitor
IU5R Output Current to U5R 3 mA
VOL Output Voltage “Low” 0 0.2 * VU5R V IOL = 10 µA
VOH Output Voltage “High” 0.8 * VU5R VU5R V -IOH = 10 µA
VIL Input Voltage “Low” (only SDA) -0.3 0.3 * VU5R V -IIL = 1.5…0.2mA
VIH Input Voltage “High” (only SDA) 0.7 * VU5R VU5R + 0.3 V IIH = -1…1 µA
t

DATAinSU

t

DATAinHO

t

AA

Set-up Time for Data Input 0.25 µs
Hold Time for Data Input 0 µs
Time from SCK Low to SDA

3.5 µs

Data Out and ACK Out

t

DATAoutHO

t

STARTSU

t

STARTHO

t

STOPSU

t

BUF

Hold Time for Data Output 0.3 µs
Set-up Time for Start Condition 4.7 µs
Hold Time for Start Condition 4 µs
Set-up Time for Stop Condition 4.7 µs
Time which has to be Free for

4.7 µs

Bus: Before Next Transmission

t

R

t

F

t

LOW

t

HIGH

t

SCL

Rise Time 1000 ns
Fall Time 300 ns
Impulse LOW Time 4700 ns
Impuls HIGH Time 4000 ns
Clock Frequency for E2PROM 100 kHz fc = 5.333 MHz

t

F

LOW

t

AA

t

HIGH

t

t

DATAinHO

R

t

DATAoutHO

t

DATAinSU

t

STOPSU

t

R

t

BUF

SCL

SDA in

SDA out

t

STARTSU

t

F

t

STARTHO

t

The U5R supply pin provides a typically 5V supply voltage to the external E2PROM, and has a
biasing capability only for this purpose.
Programming of the E2PROM is possible with the E2PROM soldered-in into the AS-Interface
Slave unit's pc-board by accessing the SCL / SDA serial bus with an external programming
hardware.

Rev. C, October 2000 Page 10 of 16

AS-Interface Slave IC
AS2701A (ISA3+)

For successful programming the programmer hardware must have sink/source capability of at
least 5 mA, and the AS-Interface Slave IC's supply voltage LTGP has to be in the range of

26.65 V ...33.35 V.
The only E2PROM address locations which can be programmed through the AS-Interface
Slave IC (hence over the AS-Interface Bus and by the AS-Interface Master), are locations 0
and 1, which both have been reserved for the AS-Interface Slave unit's address.

The E2PROM has to be programmed in the following way:

E2PROM
Address

0 0 0 0 AS-Interface address 0
1 0 0 0 AS-Interface address 0
2 ID Code IO Configuration Custom Specific Data
3 ID Code IO Configuration Custom Specific Data

D7 D6 D5 D4 D3 D2 D1 D0 Initialization Data

Recommended E2PROM types:

Supplier Type Organization

Philips PCA8581P 128 x 8

ST ST24C01 128 x 8

Catalyst CAT24LC02(Z)IP 256 x 8

Xicor X24LC02PI 256 x 8

Catalyst CAT24LC04(Z)IP 512 x 8

Xicor X24(L)C04PI 512 x 8

f) Sensor / actuator supply pin UOUT / Functional and electrical

characteristics

Symbol Parameter min max Unit Note

VUOUT Output Voltage at UOUT VLTGP –

VDROP min

VUOUTp Overswing of the Output

Voltage

t

UOUTP

VDROP Voltage Drop from LTGP
IUOUT Output Current UOUT 0 35 mA 11.0 V < VUOUT < 27.6 V

Overswing Impulse Width 2. ms

5.5 6.7 V

to UOUT

VLTGP –
VDROPmin

1.5 V CUOUT = 10 µF:

V IUOUT = 35 mA

Switching 0-35 mA - 0

CUOUT Load Capacity UOUT 10 470 µF

The interface is intended for the supply voltage to actuators, sensors as well as external
circuits with a power supply of <35mA without overloading the AS-Interface line in the range of
the signal frequency. The AS-Interface slave IC has an internal circuit protector which limits the
current during the charging of the load capacitor and which effects a power down at thermal
overload, e.g. at too high output currents.

In the case of a current break down on the AS-Interface line of less than 1ms, the internally
stored information is retained. The supply voltage of the IC during this time is extracted from
the capacitor Pin UOUT which is disconnected from the AS-Interface line.

Rev. C, October 2000 Page 11 of 16

AS-Interface Slave IC
AS2701A (ISA3+)

Reset Behaviour

The AS-Interface Slave IC can be in reset condition or reset by the following events:

• at power-up of VLTGP: as long as VUOUT has not yet reached the treshold voltage
9 V ≤ VCOMOFF ≤ 11 V;

• at power-down of VLTGP: as soon as U5R drops below the treshold voltage

3.5 V ≤ VPOR ≤ 4 V;

• by a 'L' input level to DSTBn for more than 44 µs;

• resulting from a “Reset AS-Interface Slave“- command by the AS-Interface Master

over the AS-Interface BUS.

The different levels of VCOMOFF and VPOR as per a) and b) and the fact that the U5R supply
voltage results from a down-regulation of the VUOUT supply assure a desirable hysteresis in
the order of several volts between the VUOUT power-on-reset and power-down-reset
threshold. Whereas at power-up the AS-Interface Slave IC is released from reset by VUOUT
reaching a level of between 9 V and 11 V, at power-down VUOUT has to come down to a level
in the order of 5 V for U5R to drop into the reset-triggering window between 3.5 V and 4 V.

Some different power-down events are illustrated below:

t

VLTGP
18 V

POR

(internal signal)

1

0 V

Loff

VUOUT
VCOMOFF

(no reset)

2

neither receive

nor transmit

VUOUT
VCOMOFF

VU5R
VPOR

3

(reset)

Notes:
as to (1): No reset will be triggered, if VLTGP is lower than 18 V for less than 1 ms
as to (2): If VUOUT < VCOMOFF but still U5R > VPOR, communication over the Data

Port is inhibited, but no reset triggered

as to (3): If U5R < VPOR (resulting from VUOUT << VCOMOFF), a reset is triggered.

Reset is overcome as soon as VUOUT > VCOMOFF (implying U5R > VPOR)

In reset condition internal registers are cleared and data port D0...D3 is switched into high­impedant condition. After release from reset the AS-Interface Slave automatically performs a
first read cycle to clear the E2PROM from any previously interrupted communication state and
a second one to load the AS-Interface address, IO Configuration and ID Code into its internal
registers.

Symbol Parameter min max Unit Note

t reset Reset Time after the Master

2 ms
Command “Reset AS-Interface Slave”
or DSTBn = ext. L/H-Edge

t reset2 Reset Time after Power On 30 ms
t reset3 Reset Time after Power On with great

1000 ms CUOUT = 470 µF
Load Capacity

t Loff Voltage Breakdown Time 1 ms CUOUT > 10 µF
VCOMMoff Voltage for “Communication OFF” 9 11 V
VPOR Voltage for Internal Reset 3.5 4 V

Rev. C, October 2000 Page 12 of 16

AS-Interface Slave IC
AS2701A (ISA3+)

Application Example 1:

Sensor/actuator circuit supplied by the AS-Interface Slave IC (UOUT) for supply current needs

≤ 35 mA.

1

A2

A1

SCL

TEST

C2

A0

U5R

VSS

E2PROM

SDA

ASI-N

ASI Line

LTGN

V2

LTGP

V1

C4

SCL

SDA

ASI-Slave-IC

CDC

UOUT

TEST

OSC1

U5R

OSC2

D0

DSTBn

PSTBnP0P1

1

D1

D2

D3

P2

P3

Customer Interface

ASI-P

C1

C3

C5

G1

C1 = 22...470 nF / max. AS-Interface BUS DC voltage
C2 = 10...220 nF / max VU5R = 5.5 V
C3 = 10...470 µF / max. (VUOUT + VUOUTp) = 29.1 V
C4 = 22...100 nF / max. (VUOUT + VUOUTp + 1.4 V) = 30.5 V
C5 = 10...100 nF (close to the IC) / max. (VUOUT + VUOUTp) = 29.1 V
V1 = 1N4002 or equivalent
V2 = TGL 41-39A or equivalent
G1 = AS-Interface Crystal 5.333 MHz

For V2 a limiter diode with a small capacitance value should be selected, to ensure that the
AS-Interface Bus can be operated with the maximum number of Slave units connected.

In a more general sense care should be taken that the pc board tracks and the external
components between the AS-Interface Bus and LTGP / LTGN contribute to the AS-Interface
Slave unit's input impedance inductively and highly resistively, rather than capacitively.

Rev. C, October 2000 Page 13 of 16

AS-Interface Slave IC

ASI-Slave-IC

E

2

AS2701A (ISA3+)

Application Example 2:

Sensor / actuator circuit supplied from the AS-Interface Bus for supply current needs > 35 mA.
It is recommended to protect the AS-Interface Bus by a fuse in this set-up, if there is a high risk
of excessive current extraction due to component failure (e.g.: MC1747 or other components in
the sensor / actuator circuitry).

4

ASI-P

ASI-N

100n

2,2mH 2,2mH

100n 100n

ST24C01

8

VCC

4

VSS

5

100n100n

10

LTGN

11

LTGP

12

CDC

5

DSTBn

16

PSTBn

14

OSC1

15

OSC2

17

P0

18

P1

19

P2

20

P3

SDA

SCL

TEST

U5R

UOUT

9
8
7
6

13

4

D0

3

D1

2

D2

1

D3

SDA

PROM

7

MODE

6

SCL

1

E0

2

E1

3

E2

A
K

C

E

U+

5

-

7

+

8

U-

MC1747

11

RF

10

U1

130k

12k

100n

100n10µ

130k

2,2mH 2,2mH

AS-Interface Quartz 5.333 MHz

AS2701A works fine with the following crystal types:

Citizen CM 309

Philips SQ 4849
AS-Interface quartz crystals are available from:
Endrich GmbH Geyer electronic

Contact: Axel Gensler Contact: Jürgen Blank
Hauptstr. 56 Camerloherstr. 71
D-72202 Nagold D-80689 München
Tel.: [phone] Tel.: [phone]
Fax: [phone] Fax: [phone]
Email: [e-mail]

Rev. C, October 2000 Page 14 of 16

AS-Interface Slave IC
AS2701A (ISA3+)

Kinseki Europe GmbH Rutronik Elektronische Bauelemente GmbH
Contact: Dirk Holstein Contact: Jürgen Tischhauser
Schirmer Str. 76 Industriestraße 2
D-40211 Düsseldorf D-75228 Ispringen / Pforzheim
Tel.: [phone] Tel.: [phone]
Fax: [phone] Fax: [phone]
Email: [e-mail] Email: [e-mail]

Application Support

a) For general information and documentation on the AS-Interface concept you may contact

one of the following AS-Interface Associations:

AS-International Association
Contact: Rolf Becker
Zum Taubengarten 52
D-63571 Gelnhausen
Tel.: [phone]
Fax: [phone]
Email: [e-mail]

AS-Interface Switzerland AS-Interface France
Contact: Rainer Schnaidt Contact: Gilles Mazet
Bittertenstraße 15 5 rue Nadar
CH-4702 Oensingen F-92566 Rueil Malmaison cedex
Tel.: [phone] Tel.: [phone]
Fax: [phone] Fax: [phone]
Email: [e-mail] Email: [e-mail]

AS-Interface Italy AS-Interface The Nederlands
Contact: Maurizio Ghizzoni Contact: Andre Braakman
Via G.B. Barinetti, 1 Boerhaavelaan 40
I-20145 Milano NL-2700 AD Zoetermeer
Tel.: [phone] Tel.: [phone]
Fax: [phone] Fax: [phone]
Email: [e-mail] Email: [e-mail]

AS-Interface Great Britain AS-Interface USA
Contact: Geoff Hodgkinson Contact: Michael Bryant
1 West Street 16101 N. 82
GB-PO 14 4DH Titchfield, Hampshire USA-85260 Scottsdale, Arizona
Tel.: [phone] Tel.: [phone]
Fax: [phone] Fax: [phone]
Email: [e-mail] Email: [e-mail]

nd

Street, Suite 3B

Rev. C, October 2000 Page 15 of 16

AS-Interface Slave IC
AS2701A (ISA3+)

AS-Interface Belgium AS-Interface Sweden
Contact: Maurice de Smedt Contact: Lars Mattsson
Avenue Paul Hymanslaan 47 Karl Nordströms väg 31
B-1200 Bruxelles-Brussel SE-43253 Varberg
Tel.: [phone] Tel.: [phone]
Fax: [phone] Fax: [phone]
Email: [e-mail] Email: [e-mail]

b) A demoboard, equipped with AS2701A and supporting discrete components, is available

from:

Bihl & Wiedemann GmbH Leuze electronic GmbH
Mr. Bihl Mr. Keller
Käfertaler Straße 164 In der Braike 1
D-68167 Mannheim D-73277 Owen/Teck
Tel.: [phone] Tel.: [phone]
Fax: [phone] Fax: [phone]

c) Technical hotline assistance is provided by:
Bihl & Wiedemann GmbH (see above)

Bibliography

ASI: The Actuator-Sensor-Interface for Automation
Edts.: Werner Kriesel, Otto W. Madelung
Carl Hanser Verlag, Munich and Vienna, 1995
ISBN: 3-446-18265-9

Ordering Information

AS2701A Package: SOIC 20 Delivery: Tubes
AS2701AT Package: SOIC 20 Delivery: Tape & Reel

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Rev. C, October 2000 Page 16 of 16