W742C813 Datasheet, PDF (37/56 Pages) Winbond – 4 BIT MICROCONTROLLER

W742E/C813
RD.0
PM0.3
DATA BUS
Signal
change
detector
PEF.4
PM0.3
RD.1
Signal
change
detector
PEF.5
PM0.3
RD.2
PEF.6
Signal
change
detector
PM0.3
RD.3
Signal
change
detector
PEF.7
D
PSR1.0
Q
ck _R
D
Q
ck _R
PSR1.1
D
Q
ck _R
PSR1.2
D
Q
ck _R
PSR1.3
DQ
ck _R
EVFD
HEFD
HCFD
CLR EVFD
Reset
Falling
Edge
detector
Falling
Edge
detector
Falling
Edge
detector
Falling
Edge
detector
SEF.4
SEF.5
SEF.6
SEF.7
Reset
MOV PEF, #I
CLR PSR1
To Wake Up Stop Mode
Figure 5-15 Architecture of Input Ports RD
5.20.1 Port Status Register 1 (PSR1)
Port status register 1 is organized as 4-bit binary register (PSR1.0 to PSR1.3). PSR1 can be read or
cleared by the MOVA R, PSR1, and CLR PSR1 instructions. The bit descriptions are as follows:
3
2
1
0
PSR1 R
R
R
R
Note: R means read only.
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Publication Release Date: December 2000
Revision A1