hd66710 Renesas Electronics Corporation., hd66710 Datasheet - Page 53

• Manufacturer Part Number: hd66710
• Description: Dot Matrix Liquid Crystal Display Controller/driver
• Manufacturer: Renesas Electronics Corporation.

Table 15
Step
No.
1
2
3
4
5
6
7
8
Note:
Power supply on (the HD66710 is initialized by the internal reset
circuit)
Function set
0
—
Function set
0
0
Function set
0
0
Return home
0
0
Display on/off control
0
0
Entry mode set
0
0
Write data to CGRAM/DDRAM
1
1
RS
2. When DB3 to DB0 pins are open in 4-bit mode, the RE, BE, LP bits are set to “1” at step #2.
1. The control is the same as for 8-bit operation beyond step #8.
So, these bits are clear to “0” at step #3.
R/
0
—
0
0
0
0
0
0
0
0
0
0
0
0
4-Bit Operation, 16-Digit
: :
0
—
0
0
0
0
0
0
0
1
0
0
0
1
D7
D6
0
—
0
1
0
0
0
0
0
1
0
1
1
0
1
—
1
0
1
*
0
1
0
1
0
1
0
0
Instruction
D5
D4
0
—
0
0
0
*
0
0
0
0
0
0
0
0
D3
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1-Line Display Example with Internal Reset
—
—
—
—
—
—
—
—
—
—
—
—
—
—
D2
D1
—
—
—
—
—
—
—
—
—
—
—
—
—
—
D0
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Display
H_
_
_
Operation
Initialized. No display.
Sets to 4-bit operation.
Clear bit 2. In this case,
operation is handled as 8 bits by
initialization. *
Sets 4-bit operation and
selects1-line display. Clear BE,
LP bits. 4-bit operation starts
from this step.
Sets 4-bit operation and
selects1-line display. Clear RE
bit.
Returns 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 DD/CGRAM.
Display is not shifted.
Writes H.
DDRAM has already been
selected by initialization.
HD66710
343