UPD16432BGC-001-9EU 데이터 시트보기 (PDF) - NEC => Renesas Technology

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UPD16432BGC-001-9EU

1/8, 1/15 DUTY LCD CONTROLLER/DRIVER

NEC => Renesas Technology 

µPD16432B

STANDBY MODE

If standby mode is selected with bit b4 of the status command, the following state is set irrespective of bits b3 to b0

of the status command.

(1) LCD forced off (SEGn, COMn = VLC5)

(2) LED forced off

(3) Key scanning stopped (but KEYn = key input wait)

(4) OSC stopped

There are two ways of releasing standby mode, as follows:

(1) Using Status Command

Select normal operation with bit b4 of the status command.

Example of Use of Status Command

Item

Standby mode

Status command

Standby transition time

Status command

End

STB

L

H

L

H

L

Command/Data

b7 b6 b5 b4 b3 b2 b1 b0

Description

1 1 0 0 0 0 0 0 Standby release (OSC oscillation start), LCD

control off (SEGn, COMn = VLC5), LED forced

off, key scanning stopped

10 µsNote

1 1 0 0 1 1 1 0 Normal operation

Note If LCD normal operation or key scan operation is initiated within the standby transition time, the LCD

may flicker.

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