HT1632 datasheet(5/17 Pages) HOLTEK

5 / 17 page

HT1632

Rev. 1.00

October 2, 2007

Functional Description

Display Memory

- RAM

The static display memory, RAM, is organised into 64

´4

bits or 96

´4 bits and stores the displayed data. If 32 out

bits & 8 commons is selected, the RAM size is 64

´4 bits.

If 24 out bits & 16 commons is selected the RAM size is

´4 bits. The contents of the RAM are directly mapped

to the contents of the LED driver. Data in the RAM can

be accessed by the READ, WRITE, and READ-

MODIFY-WRITE commands. The following table shows

the mapping from the RAM to the LED pattern:

Com7

Com6

Com5

Com4

Addr.

Com3

Com2

Com1

Com0

Addr.

Out0

01H

00H

Out1

03H

02H

Out2

05H

04H

Out3

07H

06H

Out4

09H

08H

Out5

0BH

0AH

Out6

0DH

0CH

Out7

0FH

0EH

Out8

11H

10H

Out9

13H

12H

Out10

15H

14H

Out11

17H

16H

Out12

19H

18H

Out13

1BH

1AH

Out14

1DH

1CH

Out15

1FH

1EH

Out16

21H

20H

Out17

23H

22H

Out18

25H

24H

Out19

27H

26H

Out20

29H

28H

Out21

2BH

2AH

Out22

2DH

2CH

Out23

2FH

2EH

Out24

31H

30H

Out25

33H

32H

Out26

35H

34H

Out27

37H

36H

Out28

39H

38H

Out29

3BH

3AH

Out30

3DH

3CH

Out31

3FH

3EH

Data

32 Outbits & 8 Common for 64

´4 Display RAM

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