Specifications

7–20 EPSON
SED1234/35 Series
Table 4 SED1234/SED1235 Command List
Command
Code
Function
A0WR D7 D6 D5 D4 D3 D2 D1 D0
Moves the cursor to the home position.
Sets cursor ON/OFF (C), cursor blink ON//OFF (B),
double cursor ON/OFF (DC) and display ON/OFF
(D).
C = 1 (cursor ON) 0 (cursor OFF), B = 1 (blink ON)
0 (blink OFF) DC = 1 (double cursor ON)
0 (double cursor OFF), D = 1 (display ON)
D = 0 (display OFF)
Sets power save ON/OFF (PS) and oscillating circuit
ON/OFF (0).
PS = 1 (power save ON) 0 (power save OFF),
0 = 1 (oscillating circuit ON) 0 (oscillating circuit
OFF)
Sets voltage regulating circuit ON/OFF and boosting
circuit ON/OFF (P).
VC = 1 (voltage regulating circuit ON) 0 (voltage
regulating circuit OFF) VF = 1 (voltage follower
ON) 0 (voltage follower OFF), P = 1 (boosting
circuit ON) 0 (boosting circuit OFF)
Sets the use or non-use of CG RAM and display
lines (N2, N1).
CG = 1 (use of CG RAM) 0 (non-use of CG RAM),
N2, N1 = 0, 0 (2 lines) 0, 1 (3 lines) 1, 0 (4 lines)
Sets the electronic volume register value.
Sets the DD RAM, CG RAM or symbol register
address.
Writes data into the DD RAM, CG RAM or symbol
register address.
Non-operation command
Command for IC chip test. Don’t use this command.
(1) Cursor Home 0 0 0 001****
(2) Display ON/OFF 0 0 0 0 1 1 C B DC D
Control
(3) Power Save 0 0 0 100**0PS
(4) Power Control 0 0 0 1010VCVFP
(5) System Set 0 0 0 1 1 0 N2 N1 * CG
(6) Electronic Volume 0 0 0 1 1 1 MSB LSB
Register
(7) RAM Address Set 0 0 1 ADDRESS
(8) RAM Write 1 0 DATA
(9)NOP 0000000000
(10) Test Mode 0 0 0 0001010