PCF8579 Philips Semiconductors, PCF8579 Datasheet - Page 3

• Manufacturer Part Number: PCF8579
• Description: LCD column driver for dot matrix graphic displays
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1
4
1997 Apr 01
PCF8579T
PCF8579U7
PCF8579H
LCD column driver
Used in conjunction with the PCF8578, this device forms
part of a chip set capable of driving up to 40960 dots
40 column outputs
Selectable multiplex rates; 1 : 8, 1 : 16, 1 : 24 or 1 : 32
Externally selectable bias configuration, 5 or 6 levels
Easily cascadable for large applications (up to
32 devices)
1280-bit RAM for display data storage
Display memory bank switching
Auto-incremented data loading across hardware
subaddress boundaries (with PCF8578)
Power-on reset blanks display
Logic voltage supply range 2.5 to 6 V
Maximum LCD supply voltage 9 V
Low power consumption
I
TTL/CMOS compatible
Compatible with most microcontrollers
Optimized pinning for single plane wiring in multiple
device applications (with PCF8578)
Space saving 56-lead plastic mini-pack and 64-pin
plastic low profile quad flat package
Compatible with chip-on-glass technology
I
LCD column driver for dot matrix graphic
displays
NUMBER
2
2
C-bus interface
C-bus address: 011110 SA0.
FEATURES
ORDERING INFORMATION
TYPE
LQFP64
VSO56
NAME
plastic very small outline package; 56 leads
chip with bumps on tape
plastic low profile quad flat package; 64 leads; body 10
3
DESCRIPTION
2
3
The PCF8579 is a low power CMOS LCD column driver,
designed to drive dot matrix graphic displays at multiplex
rates of 1 : 8, 1 : 16, 1 : 24 or 1 : 32. The device has
40 outputs and can drive 32
multiplexed LCD. Up to 16 PCF8579s can be cascaded
and up to 32 devices may be used on the same I
(using the two slave addresses). The device is optimized
for use with the PCF8578 LCD row/column driver.
Together these two devices form a general purpose LCD
dot matrix driver chip set, capable of driving displays of up
to 40960 dots. The PCF8579 is compatible with most
microcontrollers and communicates via a two-line
bidirectional bus (I
the ESD protection system of the SCL and SDA pins does
not use a diode connected to V
overheads are minimized by a display RAM with
auto-incremented addressing and display bank switching.
PACKAGE
Automotive information systems
Telecommunication systems
Point-of-sale terminals
Computer terminals
Instrumentation.
APPLICATIONS
GENERAL DESCRIPTION
2
C-bus). To allow partial V
10
40 dots in a 32 row
1.4 mm
DD
. Communication
Product specification
PCF8579
DD
SOT314-2
VERSION
SOT190
shutdown
2
C-bus