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參數(shù)資料
型號(hào)： W921C880
廠商： WINBOND ELECTRONICS CORP
元件分類： 微控制器/微處理器
英文描述： 4-Bit Microcontroller(4位微控制器)
中文描述： 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP80
封裝： QFP-80
文件頁(yè)數(shù)： 3/57頁(yè)
文件大小： 372K
代理商： W921C880
W921E880A/W921C880
Publication Release Date: September 1998
- 3 -
Revision A2
1. GENERAL DESCRIPTION
The W921E880A/W921C880 are 4-bit micro-processor fabricated by CMOS process. With a single
channel DTMF generator, an 8-bit D/A converter circuit, a built in four by one channel comparator
circuit and four multi-function timers. The excellent memory structure, 8K super EPROM in
W921E880A and 8K mask ROM in W921C880 for program code and 1536 x 4 bit RAM minimize the
need for external memory devices. The W921E880A/W921C880 provides good solution for
consumming application, especially for telecommunication design with few external components.
Using the serial transmit/receive function, the W921E880A/W921C880 can interface with the
Winbond LCD driver IC using the serial control circuit.
2. FEATURES
Memory
ROM (Super EPROM): 8K
×
10 bits
RAM: 1536
×
4 bits
64
×
4 bit Special registers
16
×
4 bit Working registers
128
×
4 bit General registers
304
×
4 bit Multi-purpose registers4 bit serial buffer registers
512
×
4-bit
×
2 banks
Dual-clock Operation
Crystal or RC for the main system clock: RC up to 4 MHz
Crystal for 400 K, 800 K, 2 M, 3.58 M, 4 MHz
Crystal for subsystem clock: 32.768 KHz
I/O Pins
32 bidirectional and individually controllable I/O lines:
P0 Port: P0.0
P0.3 large drive current Pins
P1 Port: P1.0
P1.3 large drive current Pins
P2 Port: P2.0
P2.3 large sink current pins and open drain option
P3 Port: P3.0
P3.3 multi-function I/O
P4 Port: P4.0
P4.3 open drain and pull high resistor option, multi-function I/O
P5 Port: P5.0
P5.3 multi-function I/O
P6 Port: P6.0
P6.3 open drain and pull high resistor option, multi-function I/O
P7 Port: P7.0
P7.3 large sink current pins and open drain option
32 bidirectional I/O lines:
P8 Port: P8.0
P8.3 large drive current pins
P9 Port: P9.0
P9.3 large sink current pins and open drain option
相關(guān)PDF資料
PDF描述
W921E880A 4-Bit Microcontroller(4位微控制器)
W921E840 4-Bit Microcontroller(4位的微控制器)
W921E880 4-Bit Microcontroller(4位的微控制器)
W921F840 4-Bit Microcontroller(4位的微控制器)
W9310 Direct Sequence Spread Spectrum Transceiver(直接序列擴(kuò)展頻譜收發(fā)器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W921E400 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER
W921E400A 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER
W921E840 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER
W921E840A 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER
W921E843A 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER
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