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參數資料
型號: W742C813
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER
中文描述: 4-BIT, MROM, 3.58 MHz, MICROCONTROLLER, PQFP100
封裝: 14 X 20 MM, 2.75 MM HEIGHT, QFP-100
文件頁數: 35/56頁
文件大小: 455K
代理商: W742C813
W742E/C813
Publication Release Date: December 2000
- 35 -
Revision A1
5.19 Input Ports RC
Port RC consists of pins RC.0 to RC.3. Each pin of port RC can be connected to a pull-high 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 at the specified pins of port RC will execute the hold mode
release or interrupt subroutine. Port status register 0 (PSR0) records the status of signal changes on
the pins of port RC. PSR0 can be read out and cleared by the
MOVA 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 5-14 and the instruction table for
more details.
Signal
detector
PEF.0
D
ck
Q
R
PSR0.0
PSR0.2
D
ck
Q
R
DATA BUS
RC.0
PSR0.3
D
ck
Q
R
PEF.3
Reset
MOV PEF, #I
CLR PSR0
HCF.2
INT 2
Reset
CLR EVF, #I
EVF.2
HEF.2
IEF.2
Falling
Edge
Falling
detector
Falling
Edge
Falling
detector
SEF.0
SEF.1
SEF.2
SEF.3
To Wake Up Stop Mode
Signal
change
D
ck
Q
R
PSR0.1
RC.1
PEF.1
Signal
change
D
ck
Q
R
PEF.2
RC.2
Signal
detector
RC.3
PM0.2
PM0.2
PM0.2
PM0.2
Figure 5-14 Architecture of Input Ports RC
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