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參數(shù)資料
| 型號： | PLF8577C |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | LCD direct/duplex driver with I2C-bus interface |
| 中文描述： | 液晶直接/雙工司機帶I2C總線接口 |
| 文件頁數(shù)： | 3/28頁 |
| 文件大?。?/td> | 195K |
| 代理商： | PLF8577C |
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1998 Jul 30
3
Philips Semiconductors
Product specification
LCD direct/duplex driver with
I
2
C-bus interface
PCF8577C
1
FEATURES
Direct/duplex drive modes with up to
32/64 LCD-segment drive capability per device
Operating supply voltage: 2.5 to 6 V
Low power consumption
I
2
C-bus interface
Optimized pinning for single plane wiring
Single-pin built-in oscillator
Auto-incremented loading across device subaddress
boundaries
Display memory switching in direct drive mode
May be used as I
2
C-bus output expander
System expansion up to 256 segments
Power-on reset blanks display
I
2
C-bus address: 0111 0100.
2
GENERAL DESCRIPTION
The PCF8577C is a single chip, silicon gate CMOS circuit.
It is designed to drive liquid crystal displays with up to
32 segments directly, or 64 segments in a duplex
configuration.
The two-line I
2
C-bus interface substantially reduces wiring
overheads in remote display applications. I
2
C-bus traffic is
minimized in multiple IC applications by automatic address
incrementing, hardware subaddressing and display
memory switching (direct drive mode).To allow partial V
DD
shutdown the ESD protection system of the SCL and SDA
pins does not use a diode connected to V
DD
.
3
ORDERING INFORMATION
4
BLOCK DIAGRAM
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
PCF8577CP
PCF8577CT
PCF8577CT
PCF8577CU/10
DIP40
VSO40
plastic dual in-line package; 40 leads (600 mil)
plastic very small outline package; 40 leads
VS040 in blister tape
chip on film-frame-carrier (FFC)
SOT129-1
SOT158A
Fig.1 Block diagram.
MGA727
VDD
VSS
SDA
SCL
A0/OSC
A1
A2/BP2
BP1
S32
S1
PCF8577C
I C - BUS
CONTROLLER
INPUT
FILTERS
SEGMENT BYTE
REGISTERS
AND
MULTIPLEX
LOGIC
BACKPLANE
AND
SEGMENT
DRIVERS
CONTROL REGISTER
AND
COMPARATOR
OSCILLATOR
AND
DIVIDER
POWER -
ON
RESET
33
32
1
34
36
37
I C - BUS
40
39
35
38
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