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參數(shù)資料
| 型號： | 935198780557 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | LIQUID CRYSTAL DISPLAY DRIVER, PQFP64 |
| 封裝： | PLASTIC, LQFP-64 |
| 文件頁數(shù)： | 23/43頁 |
| 文件大?。?/td> | 327K |
| 代理商： | 935198780557 |
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1997 Apr 01
3
Philips Semiconductors
Product specication
LCD column driver for dot matrix graphic
displays
PCF8579
1
FEATURES
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
I2C-bus interface
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
I2C-bus address: 011110 SA0.
2
APPLICATIONS
Automotive information systems
Telecommunication systems
Point-of-sale terminals
Computer terminals
Instrumentation.
3
GENERAL DESCRIPTION
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
× 40 dots in a 32 row
multiplexed LCD. Up to 16 PCF8579s can be cascaded
and up to 32 devices may be used on the same I2C-bus
(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 (I2C-bus). To allow partial VDD shutdown
the ESD protection system of the SCL and SDA pins does
not use a diode connected to VDD. Communication
overheads are minimized by a display RAM with
auto-incremented addressing and display bank switching.
4
ORDERING INFORMATION
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
PCF8579T
VSO56
plastic very small outline package; 56 leads
SOT190
PCF8579U7
chip with bumps on tape
PCF8579H
LQFP64
plastic low prole quad at package; 64 leads; body 10
× 10 × 1.4 mm
SOT314-2
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