Data Sheet S10297EJ1V0DS00

12

µµµµPD16670

6.2 Character Generator RAM (CGRAM)

CGRAM is RAM to which the user can freely set character patterns. Eight types of 5 x 8 dot character patterns can

be defined. CGRAM is the RAM that contains pictograph display data.

The relation between character codes and CGRAM addresses used to access CGRAM is shown below.

CGRAM

address

D4

D3

D2

D1

D0

CGROM

address

CGRAM

address

D4

D3

D2

D1

D0

CGROM

address

00H

20H

01H

21H

02H

22H

03H

23H

04H

24H

05H

25H

06H

26H

07H

00H

27H

04H

08H

28H

09H

29H

0AH

2AH

0BH

2BH

0CH

2CH

0DH

2DH

0EH

2EH

0FH

00H

2FH

05H

10H

30H

11H

31H

12H

32H

13H

33H

14H

34H

15H

35H

16H

36H

17H

01H

37H

06H

18H

38H

19H

39H

1AH

3AH

1BH

3BH

1CH

3CH

1DH

3DH

1EH

3EH

1FH

02H

3FH

07H

Caution Some addresses in 06H and all 07H address in CGROM are shared with pictograph data RAM.