HD66760 Datasheet, PDF (50/105 Pages) Hitachi Semiconductor – 104 X 80-dot Graphics LCD Controller/Driver for 256 Colors

HD66760
+1/-1 +256
Address
counter
(AC)
14
Microcomputer
16
Read-data
latch
Write-data latch
16
Swap processing
16
16
16
Logical/Compare operation (LG2–0:)
000: replacement, 001: OR, 010: AND, 011: EOR,
100: replacement with matched read, 101: replacement
with unmatched read, 110: replacement with matched
write, 111: replacement with unmatched write
16
Write bit mask
Graphics RAM (GRAM)
1
Swap bit (SWP)
3
Logical operation bit
(LG2–0)
8
Compare bit (CP7–0)
16
Write-mask register
(WM15–0)
Figure 31 Data Processing Flow of the Graphics Bit Operation