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參數資料
型號: W921E880
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位的微控制器)
中文描述: 4-BIT, EEPROM, 4 MHz, MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁數: 17/62頁
文件大小: 511K
代理商: W921E880
W921E880
Publication Release Date: August 1997
- 17 -
Revision A1
* PC.0
PC.3:
Normal I/O pins only.
Normal function is the same as port P0
* PD.0
PD.3:
Normal I/O pins only.
Normal function is the same as port P0
* PE.0
PE.3:
Normal I/O pins only.
Normal function is the same as port P0
* PF.0
PF.3:
Normal I/O pins only.
Normal function is the same as port P0
6.5.1 I/O Pull High and Open Drain Control
Some of the above I/O ports can be set up with a pull-high resistor or as an open drain. The user can
program the I/O through the special register so that the I/O can have a pull-high resistor or open drain
characteristics.
All pull-high resistors in the following table are 100 K
in a 3.0 voltage test condition. After a power
on reset the following special reg. will all reset to "0000".
* P4.0
P4.3:
4PH REG: (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
P4TP REG: (ADDRESS = 004H)
(Default data = 0H)
b3
b2
b1
b0
0:
1:
0:
1:
0:
1:
0:
1:
P4.0 work as CMOS type
P4.0 work as Open-drain type
P4.1 work as CMOS type
P4.1 work as Open-drain type
P4.2 work as CMOS type
P4.2 work as Open-drain type
P4.3 work as CMOS type
P4.3 work as Open-drain type
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相關代理商/技術參數
參數描述
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
W925E240FG 功能描述:IC MCU 8-BIT W/CID 100-PQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:W925 標準包裝:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI,I²C,UART/USART 外圍設備:POR,PWM,WDT 輸入/輸出數:40 程序存儲器容量:- 程序存儲器類型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數據轉換器:A/D 8x10b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC(J 形引線) 包裝:帶卷 (TR)