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參數資料
| 型號： | W741C260 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT Microcontroller(多次可編程4位的微控制器) |
| 中文描述： | 4-BIT, MROM, 4.19 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | QFP-80 |
| 文件頁數： | 20/92頁 |
| 文件大小： | 488K |
| 代理商： | W741C260 |
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W741C260
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Port Mode 0 Register (PM0)
The port mode 0 register is organized as a 4-bit binary register (PM0.0 to PM0.3). PM0 can be used
to determine the structure of the input/output ports; it is controlled by the MOV PM0, #I instruction.
The bit descriptions are as follows:
PM0
w
w
w
0
1
2
w
3
Note: W means write only.
Bit 0 = 0 RA port is CMOS output type. Bit 0 = 1 RA port is NMOS open drain output type.
Bit 1 = 0 RB port is CMOS output type. Bit 0 = 1 RB port is NMOS open drain output type.
Bit 2 = 0 RC port pull-high resistor is disabled.
= 1 RC port pull-high resistor is enabled.
Bit 3 = 0 RD port pull-high resistor is disabled.
= 1 RD port pull-high resistor is enabled.
Port Mode 1 Register (PM1)
The port mode 1 register is organized as a 4-bit binary register (PM1.0 to PM1.3). PM1 can be used
to control the input/output mode of port RA. PM1 is controlled by the MOV PM1, #I instruction. The bit
descriptions are as follows:
PM1
w
w
w
0
1
2
w
3
Note: W means write only.
Bit 0 = 0 RA.0 works as output pin; Bit 0 = 1 RA.0 works as input pin
Bit 1 = 0 RA.1 works as output pin; Bit 1 = 1 RA.1 works as input pin
Bit 2 = 0 RA.2 works as output pin; Bit 2 = 1 RA.2 works as input pin
Bit 3 = 0 RA.3 works as output pin; Bit 3 = 1 RA.3 works as input pin
At initial reset, port RA is input mode (PM1 = 1111B).
Port Mode 2 Register (PM2)
The port mode 2 register is organized as a 4-bit binary register (PM2.0 to PM2.3). PM2 can be used
to control the input/output mode of port RB. PM2 is controlled by the MOV PM2, #I instruction. The bit
descriptions are as follows:
PM2
w
w
w
0
1
2
w
3
Note: W means write only.
Bit 0 = 0 RB.0 works as output pin; Bit 0 = 1 RB.0 works as input pin
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相關代理商/技術參數 |
參數描述 |
|---|---|
| W741E200 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
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| W741E202 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT FLASH MICROCONTROLLER |
| W741E203 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT FLASH MICROCONTROLLER |
| W741E204 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT FLASH MICROCONTROLLER |
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