PCF8545ATT/A datasheet, PDF - EEWORLD Datasheet

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PCF8545ATT/A: DescriptionLCD Drivers UniversalLCD driver multiplex up to 1:8; Categorysemiconductor Other integrated circuit (IC); File Size614KB，72 Pages; ManufacturerNXP; Websitehttps://www.nxp.com; Environmental Compliance

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PCF8545ATT/A Overview

LCD Drivers UniversalLCD driver multiplex up to 1:8

PCF8545ATT/A Parametric

Parameter Name	Attribute value
Product Attribute	Attribute Value
Manufacturer	NXP
Product Category	LCD Drivers
RoHS	Details
Number of Digits	40 Digit
Number of Segments	7 Segment
Maximum Clock Frequency	400 kHz
Operating Supply Voltage	1.8 V to 5.5 V
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C
Package / Case	TSSOP-56
Product	LCD Drivers
Interface Type	I2C
Mounting Style	SMD/SMT
Supply Current - Max	50 mA
Pd - Power Dissipation	400 mW
Factory Pack Quantity	2000
Unit Weight	0.026103 oz

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PCF8545

Universal LCD driver for multiplex rates up to 1:8

Rev. 1 — 13 November 2013

Product data sheet

1. General description

The PCF8545 is a peripheral device which interfaces to almost any Liquid Crystal Display

(LCD)

with low multiplex rates. It generates the drive signals for any multiplexed LCD

containing up to eight backplanes, and up to 320 elements. The PCF8545 is compatible

with most microcontrollers and communicates via the two-line bidirectional I

C-bus

(PCF8545A) or a three line unidirectional SPI-bus (PCF8545B). Communication

overheads are minimized using a display RAM with auto-incremented addressing.

For a selection of NXP LCD segment drivers, see

Table 40 on page 61.

2. Features and benefits



Single-chip 320 elements LCD controller and driver

Wide range for digital power supply: from 1.8 V to 5.5 V

LCD supply range from 2.5 V up to 5.5 V

LCD and logic supplies may be separated

Low power consumption

Selectable backplane drive configuration: 4, 6, or 8 backplane multiplexing

Selectable display bias configuration

320-bit RAM for display data storage

400 kHz I

C-bus interface (PCF8545A)

5 MHz SPI-bus interface (PCF8545B)

Programmable frame frequency in the range of 60 Hz to 300 Hz in steps of 10 Hz;

factory calibrated



320 segments driven allowing:



up to 40 7-segment alphanumeric characters



up to 20 14-segment alphanumeric characters



any graphics of up to 320 elements



Manufactured in silicon gate CMOS process

3. Applications



Industrial and consumer products

The definition of the abbreviations and acronyms used in this data sheet can be found in

Section 21.

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