MC144032A6WC-BNMLW Midas, MC144032A6WC-BNMLW Datasheet - Page 10

• Manufacturer Part Number: MC144032A6WC-BNMLW
• Description: LCD, 144X32 NEG STN, W B/L, CHINESE; Backlighting Color: White; Display Mode: Transmissive; Supply Voltage: 5V
• Manufacturer: Midas

ICON RAM (IRAM)
ST7920 provides 240 ICON display. It consists of 15 sets of IRAM address. Each IRAM address has 16 bits
data IRAM address should be set first before writing to the IRAM. Two bytes for each address. First higher
byte (D15~D8) and then lower byte (D7~D0).
Dis p la y da ta R AM ( D D RA M )
Th e re a re 6 4 x2 b yte s fo r d i s p l a y d a ta R AM a re a . C a n s to re d i s p l a y d a ta fo r
1 6 ch a ra c te rs (1 6 x1 6 ) b y 4 l i n e s o r 3 2 ch a ra c te rs (8 x1 6 ) b y 4 l i n e s . H o w e ve r,
o n l y 2 l i n e s ca n b e d i s p l a ye d a t a ti m e . C h a ra cte r co d e s s to re d i n D D R AM
p o i n t to th e fo n ts s p e ci fi e d b y C GR O M, H C GR O M a n d C GR AM. S T7 9 2 0
d i s p l a y h a l f h e i g h t H C GR O M fo n ts , u s e r-d e fi n e d C GR AM fo n ts a n d fu l l 1 6 x1 6
C GR O M fo n ts . D a ta co d e s 0 0 0 0 H ~0 0 0 6 H a re fo r C GR AM u s e r-d e fi n e d fo n ts .
D a ta co d e s 0 2 H ~7 FH a re fo r h a l f h e i g h t a l p h a n u m e ri c fo n ts . D a ta co d e s
(A1 4 0 --~D 7 5 F ) a re fo r B I G5 co d e a n d ( A1 A0 ~ F7 F F) a re fo r GB co d e .
H i g h e r b yte ( D 1 5 --, D 8 ) a re w ri tte n fi rs t a n d th e n l o w e r b yte (D 7 ~D O) .
R e fe r to Ta b l e 5 fo r a d d re s s m a p
C GR AM fo n ts a n d C GR O M fo n ts ca n o n l y b e d i s p l a ye d i n th e s ta r t p o s i ti o n o f
e a ch a d d re s s . (R e fe r to Ta b l e 4 )
H L H L H L H L H L H L H L H L H L H L H L H L H L H L H L H L
S I t r o n I x
矽
矽
8 0
1 .
2 .
3 .
8 1
創
創
d i s p l a y H C GR O M fo n ts : W ri te 2 b yte s d a ta to D D R AM to d i s p l a y tw o
8 x1 6 fo n ts . Ea ch b yte re p re s e n ts 1 ch a ra c te r fo n t . Th e d a ta o f e a ch
b yte i s 0 2 H ~7 FH .
d i s p l a y C GR AM fo n ts : Wri te 2 b yte s d a ta to D D R AM to d i s p l a y o n e
1 6 x1 6 fo n t. On l y 0 0 0 0 H , 0 0 0 2 H , 0 0 0 4 H , 0 0 0 6 H a re a l l o w e d .
d i s p l a y C GR O M fo n ts : Wri te 2 b yte s d a ta to D D R AM to d i s p l a y o n e
1 6 x1 6 fo n t. A1 4 0 H ~D 7 5 FH a re fo r (B IG5 ) co d e , A1 A0 H ~F7 F FH a re fo r
(GB) co d e .
8 2
電
電
Incorrect position
8 3
子
子
8 4
‧
S T 7 9 2 0
8 5
中
中
8 6
文
文
8 7
編
Table 4
編
8 8
碼
碼
8 9
(
8 A
正
8 B
確
8 C
)
8 D
8 E
8 F