SA8806A

sames

5/10

PIN DESCRIPTION (Continued)

Pin

Pin

PLCC-44 DIP-40

33

20

VR[0]

LCD backplane driver outputs

32

19

VR[1]

31

18

VR[2]

30

17

VR[3]

28

15

EN

LCD Voltage Divider Enable input, active low

11

40

VI1

Optional external LCD voltage inputs

10

39

VI1/3

9

38

VI2/3

34

21

NC

Not connected

12

NC

24

NC

35

NC

44

NC

Designation Description

FUNCTIONAL DESCRIPTION

The SA8806A is a CMOS Liquid Crystal Display Driver integrated circuit for displays,

having 4 track multipexed backplanes and up to 64 LCD segments.

The integrated circuit has a parallel interface, with external contract control and a low

power mode.

1.

Parallel Interface

Read Mode: With CS and RD both active (low), the data corresponding to the

selected address, is switched to the output.

The Read cycle timing diagram is given below:

Diagram 1: Read Cycle