hd66712u Renesas Electronics Corporation., hd66712u Datasheet - Page 66

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

Table 19
Step
No.
1
2
3
4
5
6
7
8
RS
Power supply on (the HD66712 is initialized by the internal reset
circuit)
Function set
0
4-line mode set
0
Function set
Inhibit write to extension register
0
Display on/off control
0
Entry mode set
0
Write data to CGRAM/DDRAM
1
R/
0
0
0
0
0
0
: :
8-Bit Operation, 12-Digit
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Display
0
0
0
0
0
0
0
0
0
0
0
1
1
0
1
0
0
0
Instruction
·
·
·
·
·
1
0
1
0
0
0
1
1
0
1
0
1
4-Line Display Example with Internal Reset
1
0
0
1
1
0
*
0
*
1
1
0
*
1
*
0
0
0
_
_
_
·
·
·
·
·
Operation
Initialized. No display.
Sets 8-bit operation and enables
write to the extension register.
Sets 4-line operation.
Inhibits write to extension
register. Invalidates selection of
1-line/2-line by bit 3.
Turns on display and cursor.
Entire display is cleared
because of initialization.
Sets mode to increment the
address by one and to shift the
cursor to the right when writing
to RAM. Display is not shifted.
Writes H. DDRAM has already
been selected by initialization.
HD66712U
429