Specifications

SED1230
Series
EPSON 6–41
SED1230 Series
Instruction Setup Example (Reference Only)
(1) Initial setup
V
DD-VSS power ON
Power regulation
Input of reset signal
Command status
• Static display control : Off
• Display on/off control : Off
• Power save : Off
• Power control : Off
• System reset : CG=0
• Others are undefined.
Waiting for 10 µsec or more
Command input: (Asterisk indicates any
command sequence.)
(1) System setup command
(*) Static display control command
(Valid in Standby mode only)
(*) Display on/off control command
• D: On (Display)
(*) Electronic volume register setup
• Data: (0, 0, 0, 0)
(*) Power save command
• PS: Off (Power save)
• O: On (Oscillation)
(6) RAM address setup
(7) Data writing
Waiting for 20 msec or more
Command input
(8) Power control commands
• P, VF, VC: On
Command input:
(9) Electronic volume register setup
• Data: Appropriate value
End of initialization
(Note 1)
(Note 1)
(2) Display mode
End of initialization
Input of RAM address setup command
Input of RAM (data) write command
Display of written data
Note 1: Commands (6) and (7) initialize the RAM. The display contents must first be set. The non-display area
must satisfy the following conditions (for RAM clear).
• DDRAM: Write the 20H data (character code).
• CGRAM: Write the 00H data (null data).
• Symbol register: Write the 00H data (null data).
As the RAM data is unstable during reset signal input (after power-on), null data must be written. If not,
unexpected display may result.