LCD Driver Technical Manual

SED1520 Series
2–14 EPSON
Code
Command
A0 RD WR D7 D6 D5 D4 D3 D2 D1 D0
Display On/OFF 0 1 0 1 0 1 0 1 1 1 0/1
Display start line 0 1 0 1 1 0 Display start address (0 to 31)
Set page address 0 1 0 1 0 1 1 1 0 Page (0 to 3)
Set column
0 1 0 0 Column address (0 to 79)
(segment) address
Read status 0 0 1 Busy ADC ON/OFF Reset 0 0 0 0
Write display data 1 1 0 Write data
Read display data 1 0 1 Read data
Select ADC 0 1 0 1 0 1 0 0 0 0 0/1
Statis drive
0101 0 1 00100/1
ON/OFF
Select duty 0 1 0 1 0 1 0 1 0 0 0/1
Read-Modify-Write 0 1 0 1 1 1 0 0 0 0 0
End 0101 1 1 0111 0
Reset 0 1 0 1 1 1 0 0 0 1 0
Function
Turns display on or off.
1: ON, 0: OFF
Specifies RAM line corresponding to top line
of display.
Sets display RAM page in page address
register.
Sets display RAM column address in
column address register.
Reads the following status:
BUSY 1: Busy
0: Ready
ADC 1: CW output
0: CCW output
ON/OFF 1: Display off
0: Display on
RESET 1: Being reset
0: Normal
Writes data from data bus into display RAM.
Reads data from display RAM onto data
bus.
0: CW output, 1: CCW output
Selects static driving operation.
1: Static drive, 0: Normal driving
Selets LCD duty cycle
1: 1/32, 0: 1/16
Read-modify-write ON
Read-modify-write OFF
Software reset
COMMANDS
Summary