PCF8578 Philips Semiconductors, PCF8578 Datasheet - Page 3

• Manufacturer Part Number: PCF8578
• Description: LCD row/column driver for dot matrix graphic displays
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1
4
1998 Sep 08
PCF8578T
PCF8578U/2
PCF8578H
TYPE NUMBER
Single chip LCD controller/driver
Stand-alone or may be used with up to 32 PCF8579s
(40960 dots possible)
40 driver outputs, configurable as
8
Selectable multiplex rates; 1 : 8, 1 : 16, 1 : 24 or 1 : 32
Externally selectable bias configuration, 5 or 6 levels
1280-bit RAM for display data storage and scratch pad
Display memory bank switching
Auto-incremented data loading across hardware
subaddress boundaries (with PCF8579)
Provides display synchronization for PCF8579
On-chip oscillator, requires only 1 external resistor
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 PCF8579)
Space saving 56-lead plastic mini-pack and 64 pin quad
flat pack
Compatible with chip-on-glass technology.
LCD row/column driver for dot matrix
graphic displays
2
32
C-bus interface
FEATURES
ORDERING INFORMATION
rows/columns
LQFP64
VSO56
NAME
plastic very small outline package; 56 leads
chip with bumps in tray
plastic low profile quad flat package; 64 leads; body 10
32
8
,
24
16
,
16
24
or
3
2
3
The PCF8578 is a low power CMOS LCD row/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, of which 24 are programmable,
configurable as
The PCF8578 can function as a stand-alone LCD
controller/driver for use in small systems, or for larger
systems can be used in conjunction with up to
32 PCF8579s for which it has been optimized. Together
these two devices form a general purpose LCD dot matrix
driver chip set, capable of driving displays of up to
40960 dots. The PCF8578 is compatible with most
microcontrollers and communicates via a two-line
bidirectional bus (I
minimized by a display RAM with auto-incremented
addressing and display bank switching.
DESCRIPTION
PACKAGE
Automotive information systems
Telecommunication systems
Point-of-sale terminals
Computer terminals
Instrumentation.
APPLICATIONS
GENERAL DESCRIPTION
32
8
2
C-bus). Communication overheads are
,
24
16
,
16
24
10
or
8
1.4 mm
32
Product specification
rows/columns.
PCF8578
SOT190-1
SOT314-2
VERSION