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V1.2.2
CMS32L051 User Manual |Chapter 2 Pin Function
www.mcu.com.cn 20 / 703
Table 2-1 Registers assigned to each product PMxx, Pxx, PSETxx, PCLRxx, PUxx, PDxx, POMxx, PMCxx
and their bits (2/2)
port
Bit name
48
Pins
40
Pins
32
Pins
24
Pins
20
Pins
PMxx
register
Pxx
registe
r
PSETxx
register
PCLRxx
register
PUxx
register
PDxx
register
POMxx
register
PMCxx
register
Port 3
0
PM30
P30
PSET30
PCLR30
PU30
PD30
POM30
PMC30
1
PM31
P31
PSET31
PCLR31
PU31
PD30
POM31
PMC31
Port 4
0
PM40
P40
PSET40
PCLR40
PU40
POM40
1
PM41
P41
PSET41
PCLR41
PU41
POM41
Port 5
0
PM50
P50
PSET50
PCLR50
PU50
PD50
POM50
PMC50
1
PM51
P51
PSET51
PCLR51
PU51
PD51
POM51
PMC51
Port 6
0
PM60
P60
PSET60
PCLR60
PU60
Note2
PD60
Note2
POM60
Note
2
PMC60
Note 2
1
PM61
P61
PSET61
PCLR61
PU61
Note2
PD61
Note2
POM61
Note
2
PMC61
Note 2
2
PM62
P62
PSET62
PCLR62
PU62
PD62
POM62
PMC62
3
PM63
P63
PSET63
PCLR63
PU63
PD63
POM63
PMC63
Port 7
0
PM70
P70
PSET70
PCLR70
PU70
PD70
POM70
PMC70
1
PM71
P71
PSET71
PCLR71
PU71
PD71
POM71
PMC71
2
PM72
P72
PSET72
PCLR72
PU72
PD72
POM72
PMC72
3
PM73
P73
PSET73
PCLR73
PU73
PD73
POM73
PMC73
4
PM74
P74
PSET74
PCLR74
PU74
PD74
POM74
PMC74
5
PM75
P75
PSET75
PCLR75
PU75
PD75
POM75
PMC75
Port 12
0
PM120
P120
PSET120
PCLR120
PU120
PD120
POM120
PMC120
1
PM121
P121
PSET121
PCLR121
2
PM122
P122
PSET122
PCLR122
3
PM123
P123
PSET123
PCLR123
4
PM124
P124
PSET124
PCLR124
Port 13
0
PM130
P130
PSET130
PCLR130
PU130
PD130
POM130
PMC130
6
PM136
P136
PSET136
PCLR136
PU136
PD136
POM136
PMC136
7
PM137
P137
PSET137
PCLR137
PU137
POM137
Port 14
0
PM140
P140
PSET140
PCLR140
PU140
PD140
POM140
PMC140
6
PM146
P146
PSET146
PCLR146
PU146
PD146
POM146
PMC146
7
PM147
P147
PSET147
PCLR147
PU147
PD147
POM147
PMC147
Note: 1. (-A) indicates that it is limited to CMS32L051xx-A series products.
2. It is limited to CMS32L051xx-S series products. For products other than the CMS32L051xx-S series, ports P60,
P61 are dedicated N-channel open drain output ports, which do not need to be configured with POM registers and
do not have their own pull-up and pull-down functions and must be used with external pull-up resistors, and can
only be used as digital pins.

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