CMOS DOT MATRIX LCD DRIVER
BLOCK DIAGRAM IZD1521AA, IZD1521OA
IZD1520
L C D d rive circu it
D isp lay d ata latch circu it
D isp lay d ata R A M
(2560-b it)
C olu m n add ress d ecod er
CL
D isp lay
tim ing
C olu m n add ress cou n ter
FR
g en era tor
circu it
C olu m n add ress register
C om m and
d ecod er
S tatu s
M P U in terface
4