UPD16432B NEC, UPD16432B Datasheet - Page 14

• Manufacturer Part Number: UPD16432B
• Description: 1/8/ 1/15 DUTY LCD CONTROLLER/DRIVER
• Manufacturer: NEC

STANDBY MODE
of the status command.
(1) LCD forced off (SEG
(2) LED forced off
(3) Key scanning stopped (but KEY
(4) OSC stopped
(1) Using Status Command
14
Standby mode
Status command
Standby transition time
Status command
End
If standby mode is selected with bit b4 of the status command, the following state is set irrespective of bits b3 to b0
There are two ways of releasing standby mode, as follows:
Select normal operation with bit b4 of the status command.
Note If LCD normal operation or key scan operation is initiated within the standby transition time, the LCD
Item
may flicker.
n
, COM
STB
H
H
L
L
L
n
= V
b7
1
1
n
LC5
= key input wait)
b6
Example of Use of Status Command
1
1
)
b5
0
0
Command/Data
b4
0
0
b3
0
1
b2
0
1
b1
0
1
b0
0
0
Standby release (OSC oscillation start), LCD
control off (SEG
off, key scanning stopped
10 s
Normal operation
Note
n
, COM
Description
n
= V
LC5
), LED forced
PD16432B