Overview

The LC7930N, 7930NW are CMOS LSIs which incorporate 20-bit shift register, latch, and two sets of 20 LCD drivers. They also have two switching pins: one of them (channel 2) can be used as a scan-line driver (back plate) and the other (channel 1) as a segment driver. They are optimal for LCD interface with microcontroller (4 or 8 bits) or dot matrix controller circuit incorporating character generator.

Features

• Two channels of 20 output segment drivers

• The configuration of 20 output segment drivers + 20

scanning terminal drivers available

• A series data to connect with the microcontroller and three

control signals

• Able to be connected in series for large display

• Built-in bidirectional shift register can be shifted in the

direction that makes wiring easy

• Operating supply voltage/ Operating temperature:

VDD = 4.5 to 5.5 V / Topr = –20 to +75°C

• Operating current drain : IDD = 1.0 mA max

(Logic = 400 kHz, LCD = 1 kHz)

• Package : Pin 60 Flat LC7930N : QIP60

Pin 64 Flat LC7930NW : SQFP64