UPD16680 NEC, UPD16680 Datasheet - Page 8

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

3.2 Logic System Pins (2/2)
8
AMP
V
OSC
OSC
OSC
EXT
Pin Symbol
CHA
IN
OUT
BRI
Amp mode select pin
LCD reference supply
Oscillation pin
Blinking Clock
switching
Pin Name
Pin No.
79
77
80
81
83
Data Sheet S12694EJ2V0DS00
I/O
O
I
I
I
I
Select operational amplifier mode.
At High level, “Level capacitor mode”.
At Low level, “LCD driving mode”.
Select the method for supplying LCD power circuit. At High
level, LCD driving voltage is supplied external circuit. At Low
level, it is supplied internal circuit.
These pins are connected with the 1 M
external oscillation, input into the OSC
OSC
This pin is oscillation input for Blinking. To input 2 Hz external
clock, when to use Blinking by external clock mode.
When not to use this pin, keep it H or L.
OUT
open.
Function Description
IN
resistor. When using
, and leaving the
PD16680