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參數資料
| 型號： | W741C20X |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | 4-BIT MICROCONTROLLER |
| 中文描述： | 4位微控制器 |
| 文件頁數： | 18/84頁 |
| 文件大小： | 486K |
| 代理商： | W741C20X |
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Preliminary W741C20X
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When the interrupt of RC port is accepted, the corresponding event flag (EVF.2) will be reset, but the
content of PSR0 should not be changed except the CLR PSR0 or MOV PEF, #I instruction being
executed or performing the reset function. In addition, the falling edge signal on the pin of port RC
specified by the instruction MOV SEF, #I will cause the device to exit the stop mode. The RD port is
used as the I/O port only.
Refer to Figure 9, Figure 10 and the instruction table for more details.
I/O PIN
RC.n(RD.n)
DATA
BUS
Buffer
Output
PM4.n
(or PM5.n)
MOVA R, RC
(or MOVA R, RD)
instruction
MOV RC, R
(or MOV RD, R)
Instruction
Enable
Enable
Vdd
Input/Output Pin of the RC(RD)
Figure 9. Architecture of RC & RD Input/Output Pins
Port Enable Flag (PEF)
The port enable flag is organized as 4-bit binary register (PEF.0 to PEF.3). Before port RC may be
used to release the hold mode or preform interrupt function, the content of the PEF must be set first.
The PEF is controlled by the MOV PEF, #I instruction. The bit descriptions are as follows:
PEF
w
w
w
0
1
2
w
3
Note: W means write only.
PEF.0: Enable/disable the signal change at pin RC.0 to release hold mode or perform interrupt.
PEF.1: Enable/disable the signal change at pin RC.1 to release hold mode or perform interrupt.
PEF.2: Enable/disable the signal change at pin RC.2 to release hold mode or perform interrupt.
PEF.3: Enable/disable the signal change at pin RC.3 to release hold mode or perform interrupt.
Port Status Register 0 (PSR0)
Port status register 0 is organized as 4-bit binary register (PSR0.0 to PSR0.3). PSR0 can be read or
cleared by the MOVA R, PSR0, and CLR PSR0 instructions. The bit descriptions are as follows:
R
R
R
R
0
1
2
3
PSR0
Note: R means read only.
相關PDF資料 |
PDF描述 |
|---|---|
| W741C240 | 4-BIT Microcontroller(多次可編程4位的微控制器) |
| W741C250 | 4-BIT Microcontroller(多次可編程4位的微控制器) |
| W741C260 | 4-BIT Microcontroller(多次可編程4位的微控制器) |
| W741E20X | 4-BIT FLASH MICROCONTROLLER |
| W741E260 | 4-BIT FLASH MICROCONTROLLER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W741C250 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| W741C260 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
| W741E200 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| W741E201 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT FLASH MICROCONTROLLER |
| W741E202 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT FLASH MICROCONTROLLER |
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