- 您現在的位置：買賣IC網 > PDF目錄363894 > W7411240 (WINBOND ELECTRONICS CORP) 4-BIT Microcontroller(4位的微控制器) PDF資料下載
參數資料
| 型號： | W7411240 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | 4-BIT Microcontroller(4位的微控制器) |
| 中文描述： | 4位微控制器（第4位的微控制器） |
| 文件頁數： | 18/39頁 |
| 文件大小： | 424K |
| 代理商： | W7411240 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁當前第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁
W741L240
- 18 -
Input/Output Ports RA, RB
Port RA consists of pins RA.0 to RA.3 and port RB consists of pins RB.0 to RB.3. After initial reset,
input/output ports RA and RB are both in input mode. When RA and RB are used as output ports,
CMOS or NMOS open drain output type can be selected by the PM0 register. Each pin of port RA or
RB can be specified as input or output mode independently by the PM1 and PM2 registers. The
MOVA R, RA or MOVA R, RB instructions operate the input functions and the MOV RA, R or MOV
RB, R operate the output functions. For more details, refer to the instruction table and Figure 8.
I/O PIN
RA.n(RB.n)
DATA
BUS
Buffer
Output
PM0.0 (or PM0.1)
PM1.n
(or PM2.n)
MOVA R, RA
(or MOVA R, RB)
instruction
MOV RA, R
(or MOV RB, R)
Instruction
Enable
Enable
Vdd
Input/Output Pin of the RA(RB)
Figure 8. Architecture of Input/Output Pins
Input Ports RC
Port RC consists of pins RC.0 to RC.3. Each pin of port RC can be connected to a pull-up resistor,
which is controlled by the port mode 0 register (PM0). When the PEF, HEF, and IEF corresponding to
the RC port are set, a signal change on the specified pins of port RC will execute the hold mode
release or interrupt subroutine. Port status register 0 (PSR0) records the status of ports RC, i.e., any
signal changes on the pins that make up the port. PSR0 can be read out and cleared by the MOV R,
PSR0, and CLR PSR0 instructions. 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
.
Refer to Figure 9 and the
instruction table for more details. The RD port is used as input port only, it has no hold mode release,
wake-up stop mode or interrupt functions.
相關PDF資料 |
PDF描述 |
|---|---|
| W7411250 | 4-BIT Microcontroller(4位的微控制器) |
| W741L250 | 4-BIT MICROCONTROLLER |
| W741C201 | 4-BIT Microcontroller(多次可編程4位的微控制器) |
| W741C202 | 4-BIT Microcontroller(多次可編程4位的微控制器) |
| W741C203 | 4-BIT Microcontroller(多次可編程4位的微控制器) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W741C20X | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER |
| 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 |
發布緊急采購，3分鐘左右您將得到回復。