High Performance Automotive Sonar Intrusion – Data Sheet

AS8413

March 2001

Page 3 of 15

TX2

ALARM

WARN

LED

SYNC

GND

VDD

TP

N.C.

SAS

SENS1

SENS0

Pin Description

AS8413

Pin #

Name

Description

1

TX1

40-kHz burst generator - output 1.

2

OSCIN

Clock input or crystal / ceramic resonator connection.

3

OSCOUT

Crystal / ceramic resonator connection. Not connected when external clock is ap-

plied.

4

COSC

Clock output to slave IC

5

VCAP

Pin for programming capacitor at the envelope detector.

6

AVDD

Analog supply voltage (+5V).

7

AGND

Analog ground.

8

RXGND

Analog ground.

9

RX

Ultrasonic echo input.

10

SEL40K

Time reference select input (SEL40K=’1’ to select 40 kHz or SEL 40K=’0’ to select

400 kHz at OSCIN).

11

ALEN

Alarm enable input (when ALEN =’0’, the outputs ALARM, WARN and LED are dis-

abled).

12

MODE

Master/slave configuration pin (MODE=’0’ to configure slave IC, MODE=’1’ To config-

ure master IC with delayed sync and MODE open, to configure master IC without

delayed sync)

13

SENS0

Sensitivity selection (least significant bit).

14

SENS1

Sensitivity selection (most significant bit).

15

SAS

SAS enable input (SAS=’1’ activates Self-Adjusting Sensitivity, SAS=’0’ keeps sensi-

tivity fixed)

16

N.C.

(not connected)

17

TP

Test / reset pin. A rising edge resets the IC. This pin should be left unconnected or

tied to VDD for normal operation.

18

VDD

Digital supply voltage (+5V).

19

GND

Digital ground

20

SYNC

Synchronization pin. This pin is configured as output if pin MODE=’1^’ and as input if

MODE=’0’.

21

LED

Active-low signalling LED output (open drain).

22

WARN

Active-low auxiliary alarm output (open drain).

23

ALARM

Active-low main alarm output (open drain).

24

TX2

40-kHz burst generator - output 2.

Pinout & Packaging

Change pinout according to

Pin Description.

Available Package(s):

• 24 pin SOIC

• (24 pin Skinny DIP)