UPD16680 NEC, UPD16680 Datasheet - Page 31

• Manufacturer Part Number: UPD16680
• Description: 1/53/ 1/40 DUTY/ LCD CONTROLLER/DRIVER WITH BUILT-IN RAM
• Manufacturer: NEC

12
12.1 Initialize and write data
Remark x = Don't Care, D = data
Start
Reset
Duty setting
Address Register 1
Address Register 2
Address Register 3
Data R/W mode
Dot display Data 1
Dot display Data 663
Address Register 1
Address Register 2
Address Register 3
Data R/W mode
Pictograph Data 1
Pictograph Data 13
Display ON / OFF
End
CPU ACCESS EXAMPLE
Item
STB
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
b7 b6 b5 b4 b3 b2 b1 b0
D
D
D
D
0
0
1
0
0
1
1
0
0
1
0
x
x
x
x
x
x
x
x
D
D
D
D
0
0
1
0
0
0
1
0
0
0
0
x
x
x
x
x
x
x
x
Command / Data
D
D
D
D
1
0
0
0
0
1
0
0
0
1
0
x
x
x
x
x
x
x
x
D
D
D
D
0
1
0
0
0
1
1
0
0
1
0
x
x
x
x
x
x
x
x
Data Sheet S12694EJ2V0DS00
D
D
D
D
x
0
x
1
x
0
0
0
x
0
x
0
0
0
x
0
x
1
x
D
D
D
D
x
1
x
0
x
0
0
0
x
0
x
0
0
0
x
0
x
1
x
1
D
D
D
D
x
x
0
x
0
0
0
x
0
x
0
0
0
x
0
x
1
x
D
D
D
D
1
0
0
0
0
0
0
0
0
0
1
x
x
x
x
x
x
x
x
1/53 duty
Dot address
X address = 00H
Y address = 00H
Data write,
The address is incremented starting from the current one.
Dot data
(63 bytes)
Pictograph group address
X address = 00H
Y address = 00H
Data write,
The address is incremented starting from the current one.
Pictograph data
(13 bytes)
LCD ON
Explanation
PD16680
31