hd66712u Renesas Electronics Corporation., hd66712u Datasheet - Page 61

• Manufacturer Part Number: hd66712u
• Description: Dot-matrix Liquid Crystal Display Controller/driver - Hitachi Semiconductor
• Manufacturer: Renesas Electronics Corporation.

HD66712U
Table 16
Step
No.
1
2
3
4
5
6
7
8
9
10
11
424
RS
Power supply on (the HD66712 is initialized by the internal reset
circuit)
Function set
0
Return home
0
Display on/off control
0
Entry mode set
0
Write data to CGRAM/DDRAM
1
Write data to CGRAM/DDRAM
1
Write data to CGRAM/DDRAM
1
Entry mode set
0
Write data to CGRAM/DDRAM
1
R/
0
0
0
0
0
0
0
0
0
: :
8-Bit Operation, 24-Digit
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Display
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
1
0
0
0
0
0
0
0
1
Instruction
·
·
·
·
·
1
0
0
0
0
0
0
0
0
0
0
1
0
1
1
1
0
0
1-Line Display Example with Internal Reset
0
0
1
1
0
0
0
1
0
*
1
1
1
0
0
0
1
0
*
0
0
0
0
1
1
1
0
ITACHI _
HITACHI_
HITACHI_
H_
HI_
_
_
·
·
·
·
·
Operation
Initialized. No display.
Sets to 8-bit operation and
selects 1-line display.
Bit 2 must always be cleared.
Return both display and cursor
to the original position(address
0).
Turns on display and cursor.
Entire display is in space mode
because of initialization.
Sets mode to increment the
address by one and to shift the
cursor to the right at the time of
write to the RAM. Display is not
shifted.
Writes H. DDRAM has already
been selected by initialization
when the power was turned on.
Writes I.
Writes I.
Sets mode to shift display at the
time of write.
Writes a space.