S1D1 Epson Electronics America, Inc., S1D1 Datasheet - Page 181

• Manufacturer Part Number: S1D1
• Description: LCD Controller-driver With Built-in Character ROM
• Manufacturer: Epson Electronics America, Inc.

S1D15400 Series
(7) Read Display Data
Reads 8-bits of data from the data I/O latch, updates the contents of the I/O buffer with display data from the display data
RAM location specified by the contents of the column address and page address registers and increments the column
address register.
After loading a new address into the column address register, one dummy read is required before valid data is obtained.
(8) Select ADC
Selects the relationship between display data RAM column addresses and segment drivers.
D=1: SEG0
D=0: SEG0
This command is provided to reduce restrictions on the placement of driver ICS and routing of traces during printed circuit
board design. See figure 2 for a table of segments and column addresses for the two values of D.
(9) Static Drive ON/OFF
Forces display on and all common outputs to be selected.
D=1: Static drive on
D=0: Static drive off
(10) Select Duty
Sets the duty cycle of the LCD drive.
D=1: 1/4 duty cycle
D=0: 1/3 duty cycle
6–16
A
A
A
A
1
0
0
0
0
0
0
0
column address 4FH, … (inverted)
column address 00H, … (normal)
RD
RD
RD
RD
0
1
1
1
R/W
R/W
R/W
R/W
WR
WR
WR
WR
1
0
0
0
D
D
D
D
1
1
1
7
7
7
7
D
D
D
D
0
0
0
6
6
6
6
D
D
D
D
1
1
1
5
5
5
5
EPSON
Read data
D
D
D
D
0
0
0
4
4
4
4
D
D
D
D
0
0
1
3
3
3
3
D
D
D
D
0
1
0
2
2
2
2
D
D
D
D
0
0
0
1
1
1
1
D
D
D
D
D
D
D
0
0
0
0
A0H, A1H
A4H, A5H
A8H, A9H
Rev. 1.0