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參數(shù)資料
型號(hào)： W921E843A
廠商： WINBOND ELECTRONICS CORP
元件分類： 微控制器/微處理器
英文描述： 4-BIT MICROCONTROLLER
中文描述： 4-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDIP40
封裝： DIP-40
文件頁(yè)數(shù)： 19/58頁(yè)
文件大小： 449K
代理商： W921E843A
W921E840A/W921C840
Publication Release Date: July 1999
- 19 - Revision A3
P6.0 to P6.3: Multi-function I/O pins (selected by P6IO register)
Normal function I/O pins
Special function I/O pins
P6IO register: (address = 012H, default data = 0H)
b3
b2
b1
b0
0:
1:
0:
1:
0:
1:
Normal I/O P6.0
Work as the data output pin of the WCLK pin
(WDATA)
Normal I/O P6.1
Work as the clock I/O pin of the WDATA pin
(WCLK)
Normal I/O P6.2
Work as the data input pin of the RCLK pin
(RDATA)
Normal I/O P6.3
Work as the clock I/O pin of the RDATA pin
(RCLK)
0:
1:
PA.0 to PA.3: Normal function I/O pins only
PB.0 to PB.3: Normal function I/O pins only
PC.1 to PC.3: Normal function I/O pins only
PD.0 to PD.1: Normal function I/O pins only
6.5.2 Pull High and Open Drain Control of I/O
Some of the above I/O ports can be controlled with pull-high resistor or open drain by programming
the special register.
All pull-high resistors of the following descriptions are 400K
under 3.0 voltage test condition. After
power-on reset the following special register will all reset to 0H.
P4.0 to P4.3:
P4PH register: (address = 003H, default data = 0H)
b3
b2
b1
b0
0:
1:
0:
1:
0:
1:
0:
1:
P4.0 without pull-high resistor
P4.0 with pull-high resistor
P4.1 without pull-high resistor
P4.1 with pull-high resistor
P4.2 without pull-high resistor
P4.2 with pull-high resistor
P4.3 without pull-high resistor
P4.3 with pull-high resistor
相關(guān)PDF資料
PDF描述
W921C880 4-Bit Microcontroller(4位微控制器)
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)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W921E880 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER
W921E880A 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER
W925C240 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telephone Controller
W925C625 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-bit CID MICROCONTROLLER
W925E240 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telephone Controller
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