PCF8535

Features:

` Single-chip LCD controller/driver
` 65 row, 133 column outputs
` Display data RAM 65 ´ 133 bits
` 133 icons (last row is used for icons)
` Fast mode I2C-bus interface (400 kbits/s)
` Software selectable multiplex rates: 1 : 17, 1 : 26, 1 : 34, 1 : 49 and 1 : 65
` On-chip:
      Generation of intermediate LCD bias voltages
      Oscillator requires no external components (external clock also possible)
      Generation of VLCD.
` CMOS compatible inputs
` Software selectable bias configuration
` Logic supply voltage range VDD1 to VSS1 4.5 to 5.5
` Supply voltage range for high voltage part VDD2 and VDD3 to VSS2 and VSS3 4.5 to 5.5 V
` Display supply voltage range VLCD to VSS:
Mux rate 1 : 65: 8 to 16 V.
` Low power consumption, suitable for battery operated systems
` Internal Power-on reset and/or external reset
` Temperature read back available
` Manufactured in N-well silicon gate CMOS process.



Application

· Automotive information systems
· Telecommunication systems
· Point-of-sale terminals
· Instrumentation.


Specifications

SYMBOL	PARAMETER	MIN.	MAX.	UNIT
VDD	supply voltage	-0.5	+7.0	V
IDD	supply current	-50	+50	mA
VLCD	LCD supply voltage	-0.5	+17.0	V
ILCD	LCD supply current	-50	+50	mA
ISS	negative supply current	-50	+50	mA
VI/VO	input/output voltage (any input/output)	-0.5	VDD + 0.5	V
II	DC input current	-10	+10	mA
IO	DC output current	-10	+10	mA
Ptot	total power dissipation per package	-	300	mW
P/out	power dissipation per output	-	30	mW
Tamb	ambient temperature	-40	+85
Tstg	storage temperature	-65	+150
Tj(max)	maximum junction temperature	-	150

Description

The PCF8535 is a low power CMOS LCD row/column driver, designed to drive dot matrix graphic displays at multiplex rates of 1 : 17, 1 : 26, 1 : 34, 1 : 49 and 1 : 65. Furthermore, it can drive up to 133 icons. All necessary functions for the display are provided in a single chip, including on-chip generation of LCD bias voltages, resulting in a minimum of external components and low power consumption. The PCF8535 is compatible with most microcontrollers and communicates via an industry standard two-line bidirectional I2C-bus serial interface.

All inputs are CMOS compatible.