Specifications

9–6 EPSON
SED1278
4. Input/Output terminal configuration
VDD
Applicable terminal
· DBO to DB7
Internal
V
SS
INSTRUCTION DESCRIPTION
Instruction Summary
* Don’t care
Instruction
Code
Description
Cycle Time
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 (max.)
Clear Display 0 000000001
Clears all display data and sets DDRAM
410 clocks
address 0 in the address counter.
Set DDRAM address 0 in the address
Return Home 0 00000001*
counter. Also returns any shifted data to
410 clocks
home. The contents of DDRAM remain
unchanged.
Specifies the direction in which the cursor
Entry Mode Set 0 0000001I/DS
moves and whether the display is to be
10 clocks
shifted or not, when data is writen to or read
from memory
Sets all display on/off (D) cursor on/off (C),
Display ON/OFF 0 000001DCBand character blinking in the cursor position 10 clocks
(B).
Cursor or
000001S/CR/L**
Moves the cursor and shifts the display 10 clocks
Display Shift without changing the contents of DDRAM.
Sets the interface data length (IF), number of
System Set 0 0001IFNF* *characters to be displayed (N), and character 10 clocks
font (F).
Set CGRAM
0001 A
CG
Set CGRAM addresses, followed by
10 clocks
Address transfer of CGRAM data.
Set DDRAM
001 A
DD
Sets DDRAM address, followed by
10 clocks
Address transfer of DDRAM data.
Read Busy Flag
Reads the busy flag (BF) which indicates
and Address
01BF A
CC internal operation and the contents of the 0
address counter.
Write Data to
1 0 Write Data Writes data to DDRAM or CGRAM. 10 clocks
CG or DDRAM
Read Data from
1 1 Read Data Reads data from DDRAM or CGRAM. 10 clocks
CG or DDRAM