S6B33A2 Datasheet, PDF (20/67 Pages) Samsung semiconductor – 128 RGB Segment & 129 Common Driver For 4,096 Color STN LCD

S6B33A2 PRELIMINARY VER 1.3 128 RGB SEGMENT & 129 COMMON DRIVER FOR 4,096 COLOR STN LCD
DISPLAY DATA RAM
The on-chip display data RAM of S6B33A2 is a static RAM that is stored the data for the display. It is a 1,536x 128
structure. It is controlled by 2 addresses, X and Y. And, RAM area selection and automatic address count up
functions are accomplished by the internal instructions.
DDRAM Address Area Selection
A part of DDRAM address area of S6B33A2 can be accessed by X and Y address area settings. After setting RAM
area, the addresses become the start address.
Y-address
area
X-address
area
Code
P1
P2
Code
P1
P2
Figure 12. DDRAM Address Area
Table 13. X address Control
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
0
0
1
0
0
0
1
0
0
X start address set(Initial Status = 00H)
X end address set(Initial Status = 7FH)
Table 14. Y address Control
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
0
0
1
1
0
0
1
1
0
Y start address set (Initial status = 00H)
0
Y end address set (Initial status =7FH)
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