PCF8549

Features:

` Single chip LCD controller/driver
` 65 row and 102 column outputs
` Display data RAM 65 ´ 102 bits
` On-chip:
         Generation of LCD supply voltage
         Generation of intermediate LCD bias voltages
         Oscillator requires no external components (external clock also possible)
` 400 kHz Fast I2C Interface
` CMOS compatible inputs
` Mux rate: 65
` Logic supply voltage range VDD1 - VSS: 1.5 to 6 V
` Voltage generator voltage range VDD2/2_HV - VSS: 2.4 to 5 V
` Display supply voltage range VLCD - VSS: 7.0 to 16 V
` Low power consumption, suitable for battery operated systems
` Temperature compensation of VLCD
` Interlacing for better display quality
` Slim chip layout, suited for chip-on-glass applications.


Application

· Telecom equipment
· Portable instruments
· Point of sale terminals.


Specifications

SYMBOL	PARAMETER	MIN	MAX	MAX
VDD	supply voltage range	-0.5	+7	V
VLCD	supply voltage range LCD	-0.5	+17	V
ISS	supply current	-50	50	mA
Vi/VO	input/output voltage range	-0.5	VDD+0.5	V
VOLCD	LCD output voltage range	-0.5	VLCD+0.5	V
Ii	DC input current	-10	10	mA
Io	DC output current	-10	10	mA
PTOT	power dissipation per package	-	300	mW
PO	power dissipation per output	-	50	mW
TAMB	operating ambient temperature. range	-40	+85
TSTG	storage temperature range	-65	+150

Description

The PCF8549 is a low power CMOS LCD controller driver, designed to drive a graphic display of 65 rows and 102 columns. All necessary functions for the display are provided in a single chip, including on-chip generation of LCD supply and bias voltages, resulting in a minimum of external components and low power consumption. The PCF8549 interfaces to most microcontrollers via an I2C interface.