UPD16432B NEC, UPD16432B Datasheet - Page 11

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

COMMANDS
transferred is invalidated. (However, a command or data that has already been transferred is valid.)
(1) Display Setting Command
Commands set the display mode and status.
The first byte after a rise edge on the STB pin is regarded as a command.
If STB is driven low during command/data transfer, serial communication is initialized and the command/data being
This command initializes the PD16432B
slave operation, and the drive voltage supply method.
The state set when this command is executed is: LCD off, LED on, key scanning stopped. To restart the display,
it is necessary to execute “status command” normal operation. However, nothing is done if the same mode is
selected.
After powering on
MSB
Note When multiple chips are used, only the chip that sent the command is enabled. If initialization is
0
0
performed during display, the display may be affected (especially when multiple chips are used).
b2
0
b1
0
LSB
b0
0
Note
, and sets the duty, number of segments, number of commons, master/
Duty setting
Master/slave setting
Drive voltage supply method selection
0: 1/8 duty (SEG61/COM14 to SEG65/COM10
1: 1/15 duty (SEG61/COM14 to SEG65/COM10
0: Master
1: Slave
0: External
1: Internal
: Don’t Care
segment outputs)
common outputs)
PD16432B
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