Datasheet

DEM 20488 SYH-PY Product Specification
Version:3 PAGE: 13
13-2. 4-bit Interface Mode
Power on
Wait time ＞ 40ms
Condition: fosc=270khz
after V
CC
＞ 4.5v
Function set
RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1
DB0
0 0 0 0 1
1
X X X X
BF cannot be checked before
this instruction
Wait time ＞ 37us
Function set
RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1
DB0
0 0 0 0 1 0 X X X X
0 0 N F X
X
X X X X
BF cannot be checked before
this instruction
Wait time ＞ 37us
Function set
RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1
DB0
0 0 0 0 1 0 X X X X
0 0 N F X
X
X X X X
BF cannot be checked before
this instruction
Wait time ＞ 37us
Display on/off control
RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 0 0 X X X X
0 0 1 D C B X X X X
Wait time ＞ 37us
Display clear
RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 0 0 X X X X
0 0 0 0 0 1 X X X X
Wait time ＞ 1.52ms
Entry mode set
RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 0 0 X X X X
0 0 0 1 I/D S X X X X
Initialization end