SS1621 ETC, SS1621 Datasheet - Page 12

• Manufacturer Part Number: SS1621
• Description: RAM Mapping 32 X 4 LCD Controller FOR I/O UC
• Manufacturer: ETC

READ-MODIFY-WRITE mode (command code: 1 0 1 )
READ-MODIFY-WRITE mode (successive address accessing)
Command mode (command code: 1 0 0 )
Mode (data and command mode)
Note: It is recommended that the host controller should read in the data from the DATA line be-
CS
WR
RD
DATA
CS
WR
RD
DATA
CS
WR
DATA
CS
WR
DATA
RD
tween the rising edge of the RD line and the falling edge of the next RD line.
1
1
1
0
Data Mode
Command
0
0
Memory Address 1 (MA1) Data (MA1) Data (MA1)
1
Memory Address (MA) Data (MA)
1
or
A5 A4
0
A5 A4
C8 C7
A3 A2 A1 A0
A3 A2 A1 A0
Address & Data
C6 C5 C4 C3
Command 1
D0 D1 D2 D3
D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3
C2 C1 C0
D0 D1 D2 D3
Data Mode
Data (MA)
Command
Command…
or
Data (MA+1)
1
Address & Data
C8 C7
0
Memory Address 2 (MA2) Data (MA2) Data (MA2)
p. 12
1
A5 A4
C6 C5 C4 C3
Data (MA+1)
Command i
A3 A2 A1 A0
Data (MA+2) Data (MA+2)
Data Mode
C2 C1 C0
Command
D0 D1 D2 D3 D0 D1 D2 D3
or
Last update: 2008-06-03 04:36
Address & Data
Data Mode
Command
or
D0 D1 D2
SS1621