HD66712 Datasheet, PDF (66/88 Pages) Hitachi Semiconductor – Dot-Matrix Liquid Crystal Display Controller/Driver

HD66712U
Table 19 8-Bit Operation, 12-Digit × 4-Line Display Example with Internal Reset
Step
Instruction
: No. RS R/ DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Display
1 Power supply on (the HD66712 is initialized by the internal reset
circuit)
Operation
Initialized. No display.
2 Function set
00001111* *
3 4-line mode set
0000001001
4 Function set
Inhibit write to extension register
00001100* *
5 Display on/off control
_
0000001110
6 Entry mode set
_
0000000110
7 Write data to CGRAM/DDRAM
_
1001001000
8
·
·
·
·
·
·
·
·
·
·
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.
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