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參數資料
| 型號： | W742C814 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 4位微控制器 |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| 中文描述： | 4位單片機的小型通用紅外遙控器 |
| 文件頁數： | 27/46頁 |
| 文件大小： | 704K |
| 代理商： | W742C814 |
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W742C814
Publication Release Date: February 12, 2003
- 27 -
Revision A2
6.16.2 Port Mode 1 Register (PM1)
The port mode 1 register is organized as 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
Note: W means write only.
w
w
w
0
1
2
w
3
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).
6.16.3 Port Mode 2 Register (PM2)
The port mode 2 register is organized as 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
Note: W means write only.
w
w
w
0
1
2
w
3
Bit 0 = 0 RB.0 works as output pin; Bit 0 = 1 RB.0 works as input pin
Bit 1 = 0 RB.1 works as output pin; Bit 1 = 1 RB.1 works as input pin
Bit 2 = 0 RB.2 works as output pin; Bit 2 = 1 RB.2 works as input pin
Bit 3 = 0 RB.3 works as output pin; Bit 3 = 1 RB.3 works as input pin
At initial reset, the port RB is input mode (PM2 = 1111B).
6.16.4 Port Mode 5 Register (PM5)
The port mode 5 register is organized as 4-bit binary register (PM5.0 to PM5.3). PM5 can be used to
control the input/output mode of port RD. PM5 is controlled by the MOV PM5, #I instruction. The bit
descriptions are as follows:
PM5
Note: W means write only.
w
w
w
0
1
2
w
3
Bit 0 = 0 RD.0 works as output pin; Bit 0 = 1 RD.0 works as input pin
Bit 1 = 0 RD.1 works as output pin; Bit 1 = 1 RD.1 works as input pin
Bit 2 = 0 RD.2 works as output pin; Bit 2 = 1 RD.2 works as input pin
Bit 3 = 0 RD.3 works as output pin; Bit 3 = 1 RD.3 works as input pin
At initial reset, the port RD is input mode (PM5 = 1111B).
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