HD66765 Datasheet, PDF (21/71 Pages) Hitachi Semiconductor – 396-channel Segment Driver with Internal RAM for 4096-color Displays

HD66765
Direction
Settings
I/D1-0 = "00"
Horizontal: decrement
Vertical: decrement
0000h
AM = "0"
Horizontal
I/D1-0 = "01"
Horizontal: increment
Vertical: decrement
0000h
I/D1-0 = "10"
Horizontal: decrement
Vertical: increment
0000h
I/D1-0 = "11"
Horizontal: increment
Vertical: increment
0000h
0000h
tion ^{AM = "1"}
Vertical
AF83h
0000h
AF83h
0000h
AF83
0000h
AF83h
ifica ^AF83h
AF83h
AF83h
AF83h
Note: When a window address range has been set, the GRAM can only be witten to within that range.
c _{Figure 9 Address Direction Settings}
pe _{LG2–0: Compare the data read from the GRAM by the microcomputer with the compare registers}
S (CP7–0) by a compare/logical operation and write the results to GRAM. For details, see the
Logical/Compare Operation Function.
ary ^{CP11–0: Set the compare register for the compare operation with the data read from the GRAM or}
written by the microcomputer.
limin ^{Write data sent}
from the
microcomputer
Pre ^(DB11-0)
DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
000111001110
Logical operaion (with read data and write data)
Compare operaion (with compare register)
Logical/compare
LG2-0 = "000" Replace
LG2-0 = "100" Replacement of matched readdata
operation
LG2-0 = "001" OR
LG2-0 = "101" Replacement of unmatched read data
(LG2-0)
LG2-0 = "010" AND
LG2-0 = "110" Replacement of matched write data
LG2-0 = "011" EOR
LG2-0 = "111" Replacement of ummatched write data
Write data mask *
(WM11-0)
Write data mask (WM11-0)
GRAM
Note : The write data mask (WM11-0) is set by the register in the RAM Write Data Mask section.
Figure 10 Logical/Compare Operation and Swapping for the GRAM
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