AS-Interface Slave IC

AS2701A (ISA3+)

Rev. C, October 2000

Page 14 of 16

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).

LTGN

LTGP

CDC

DSTBn

PSTBn

OSC1

OSC2

P0

P1

P2

P3

SDA

SCL

TEST

U5R

UOUT

D0

D1

D2

D3

U1

10

11

12

5

16

14

15

17

18

19

20

9

8

7

6

13

4

3

2

1

VCC

VSS

MODE

SCL

SDA

E0

E1

E2

8

4

5

7

6

1

2

3

A

K

C

E

11

10

4

5

7

8

U+

-

+

U-

RF

100n

100n

100n

10µ

100n100n

12k

130k

2,2mH

2,2mH

2,2mH

2,2mH

130k

100n

100n

ASI-P

ASI-N

MC1747

ST24C01

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.: +49-7452-6007-31

Tel.: +49-89-546868-13

Fax: +49-7452-6007-70

Fax: +49-89-546868-90

Email: a.gensler@endrich.com