UPD16430A Datasheet (NEC) - 1/2/ 1/3/ 1/4 DUTY LCD CONTROLLER/DRIVER

UPD16430A, 1/2/ 1/3/ 1/4 DUTY LCD CONTROLLER/DRIVER

These pins serve as the LCD driver’s segment signal output pins.

The following display modes can be selected for the LCD driver.

Duty 1/2 Bias 1/2 Display Dot No.

120 Frame frequency (Hz) (fosc = 140 kHz) fosc fosc fosc fosc 256 , 512 , 1024 , 2048 (547) (273) (137) (68) fosc fosc fosc fosc 384 , 76

MOS INTEGRATED CIRCUIT µPD16430A 1/2, 1/3, 1/4 DUTY LCD CONTROLLER/DRIVER The µPD16430A is an LCD controller/driver that enables the display of LCDs of 1/2 duty, 1/3 duty and 1/4 duty cycle.

The LCD controller contained in the µPD16430A employs serial data transfer and uses an automatic increment function for data addresses which eliminates the need to set addresses newly each time.

The LCD driver uses a medium voltage output (14 V max.), which enables higher contrast and a wider viewing angle

UPD16430A Features

* LCD direct drive (medium voltage output: 14 V MAX.)

* Choice of 3 duty cycles 1/2 duty, 1/3 duty, 1/4 duty

* Display dot number: 1/2 duty: 120 1/3 duty: 160 1/4 duty: 240

* 2 types of drive bias 1/2 bias, 1/3 bias

* Choice of 4 types of frame frequency