LC75857E View Datasheet(PDF) - ON Semiconductor

Part Name

Description

Manufacturer

LC75857E

1/3, 1/4 Duty LCD Driver with Key Input Function

ON Semiconductor 

Ordering number : E*N7980

LC75857E

LC75857W

Advance Information

CMOS LSI

1/3, 1/4 Duty LCD Driver

with Key Input Function

http://onsemi.com

Overview

The LC75857E and LC75857W are 1/3 duty and 1/4 duty LCD display drivers that can directly drive up to 164

segments and can control up to four general-purpose output ports. These products also incorporate a key scan circuit

that accepts input from up to 30 keys to reduce printed circuit board wiring.

Features

 Key input function for up to 30 keys (A key scan is performed only when a key is pressed.)

 1/3 duty and 1/4 duty drive schemes can be controlled from serial data.

 1/2 bias and 1/3 bias drive schemes can be controlled from serial data.

 Capable of driving up to 126 segments using 1/3 duty and up to 164 segments using 1/4 duty.

 Sleep mode and all segments off functions that are controlled from serial data.

 Switching between key scan output and segment output can be controlled from the serial data.

 The key scan operation enabled/disabled state can be controlled from the serial data.

 Switching between segment output port and general-purpose output port can be controlled from serial data.

 The common and segment output waveform frame frequency can be controlled from the serial data.

 Switching between RC oscillator mode and external clock mode can be controlled from the serial data.

 Serial data I/O supports CCB format communication with the system controller.

 Direct display of display data without the use of a decoder provides high generality.

 Independent VLCD for the LCD driver block.

(When the logic block supply voltage VDD is in the range 3.6 to 6.0 V, VLCD can be set to a voltage in the range 0.75

VDD to 6.0 V, and when VDD is in the range 2.7 to 3.6 V, VLCD can be set to a voltage in the range 2.7 to 6.0 V.)

 Provision of an on-chip voltage-detection type reset circuit prevents incorrect displays.

 CCB is ON Semiconductor® ’s original format. All addresses are managed

by ON Semiconductor® for this format.

 CCB is a registered trademark of Semiconductor Components Industries, LLC.

This document contains information on a new product. Specifications and information

herein are subject to change without notice.

Semiconductor Components Industries, LLC, 2013

July, 2013

92504TN (OT) No.7980-1/39

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