SSD1801 Series

Rev 1.1

01/2003

SOLOMON

17

Character Generator RAM (CGRAM)

CGRAM has up to 5 x 8 dots 8 characters. By writing font data to CGRAM, user defined character can be used.

CGRAM can be written regardless of Function Set instruction.

ICONRAM bits

Character Code

(DDRAM data)

CGRAM address

D7

D6

D5

D4

D3

D2

D1

D0

00h (Pattern 0)

40h

41h

42h

43h

44h

45h

46h

47h

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

01h (Pattern 1)

48h

49h

4Ah

4Bh

4Ch

4Dh

4Eh

4Fh

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

02h (Pattern 2)

50h

51h

52h

53h

54h

55h

56h

57h

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

03h (Pattern 3)

58h

59h

5Ah

5Bh

5Ch

5Dh

5Eh

5Fh

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

04h (Pattern 4)

60h

61h

62h

63h

64h

65h

66h

67h

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

05h (Pattern 5)

68h

69h

6Ah

6Bh

6Ch

6Dh

6Eh

6Fh

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X