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