SA8803

sames

3/10

Pin

Designation

Description

1..3

AD0..AD2

Device address input pins. The binary code set up on

these pins, must match the address field of the control

word, before device access may be achieved. These

Schmitt-triggered inputs have on-chip pull-up resistors.

4

DOUT

This output is used for the manufacturers test requirements

and MUST be left open.

5

CC

Constant Current Drain Select.This Schmitt-triggered

input has on-chip pullup provided.

7..10,

LED1..LED4,

High current LED drive terminal outputs.

12..14,

LED5..LED7

16..18,

LED8..LED10,

20..21,

LED11..LED12,

24..26

LED13..LED15,

28..30

LED16..LED18,

32..34,

LED19..LED21,

36..38

LED22..LED24

22

INTENS

This analog input is used to set the drive current supplied

to the LED's. A resistor is connected from this pin to V

39

TEST

Active low input that enables the internal LED status word

to be output from the DOUT pin. This Schmitt-triggered

input has on-chip pullup provided.

40

NC

Internally Unconnected.

41

CLK

External clock Schmitt-triggered input runs at 8X the data

rate (Baud rate).

42

MRST

This active low Schmitt-Trigger input may be used to

reset all internal registers. When active (low) this input

will cause all LED's to be driven for the duration of MRST

(lamp test). When MRST goes inactive all LED's will be

turned off. On-chip pullup provided.

43

GND

0V Supply Input for logic (0V)

44

DATA

Serial data input. Accept data in the form of an 11-bit

information word. This Schmitt-triggered input has on-

chip pullup provided.

11, 19,

VEE

Negative Supply Inputs (-5V)

27, 35

6, 15,

VDD

Positive Supply Inputs (+5V)

23, 31

Note:

All inputs and outputs are CMOS compatible, unless otherwise specified.

PIN DESCRIPTION