LC75857E-E datasheet(1/42 Pages) ONSEMI

Part #	LC75857E-E

Description	Duty LCD Driver with Key Input Function

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Manufacturer	ONSEMI [ON Semiconductor]

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1

Publication Order Number :

July 2017 - Rev. 1

LC75857E_W/D

www.onsemi.com

ORDERING INFORMATION

See detailed ordering and shipping information on page 42 of this data sheet.

* Computer Control Bus (CCB) is an ON Semiconductor’s original bus format and

the bus addresses are controlled by ON Semiconductor.

LC75857E, LC75857W

1/3, 1/4-Duty LCD Driver

with Key Input Function

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.

PQFP64 14x14 / QIP64E

[LC75857E]

SPQFP64 10x10 / SQFP64

[LC75857W]

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