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M0A21/M0A23 Series
May 06, 2022
Page
46
of 746
Rev 1.02
M0
A21
/M
0
A
2
3
SE
RIES
TEC
H
NICAL
RE
FEREN
C
E
M
ANUAL
20
Pin
28
Pin
Pin Name
Type
MFP
Description
4
4 PA.3
I/O
MFP0
General purpose digital I/O pin.
nRESET
I
MFP2
External reset input: active LOW, with an internal pull-up. Set
this pin low reset to initial state.
Note:
It is recommended to use 10 kΩ pull-up resistor and 10
uF capacitor on nRESET pin.
UART0_nCTS
I
MFP3
UART0 clear to Send input pin.
PWM0_CH0
I/O
MFP5
PWM0 channel 0 output/capture input.
PWM0_CH2
I/O
MFP6
PWM0 channel 2 output/capture input.
PWM0_CH4
I/O
MFP7
PWM0 channel 4 output/capture input.
UART0_RXD
I
MFP9
UART0 data receiver input pin.
USCI0_CLK
I/O
MFP10
USCI0 clock pin.
USCI0_DAT0
I/O
MFP11
USCI0 data 0 pin.
USCI0_DAT1
I/O
MFP12
USCI0 data 1 pin.
USCI0_CTL0
I/O
MFP13
USCI0 control 0 pin.
USCI0_CTL1
I/O
MFP14
USCI0 control 1 pin.
USCI1_CLK
I/O
MFP15
USCI1 clock pin.
USCI1_DAT0
I/O
MFP16
USCI1 data 0 pin.
USCI1_DAT1
I/O
MFP17
USCI1 data 1 pin.
USCI1_CTL0
I/O
MFP18
USCI1 control 0 pin.
CAN0_RXD
I
MFP20
CAN0 bus receiver input.
ADC0_ST
I
MFP23
ADC0 external trigger input pin.
TM0
I/O
MFP24
Timer0 event counter input/toggle output pin.
TM2
I/O
MFP25
Timer2 event counter input/toggle output pin.
TM0_EXT
I/O
MFP26
Timer0 external capture input/toggle output pin.
TM2_EXT
I/O
MFP27
Timer2 external capture input/toggle output pin.
UART1_RXD
I
MFP29
UART1 data receiver input pin.
INT0
I
MFP30
External interrupt 0 input pin.
5
5 PC.5
I/O
MFP0
General purpose digital I/O pin.
ADC0_CH14
A
MFP1
ADC0 channel 14 analog input.
X32_IN
I
MFP2
External 32.768 kHz crystal input pin.
UART0_nCTS
I
MFP3
UART0 clear to Send input pin.
CLKO
O
MFP4
Clock Out
PWM0_CH1
I/O
MFP5
PWM0 channel 1 output/capture input.
PWM0_CH3
I/O
MFP6
PWM0 channel 3 output/capture input.
PWM0_CH5
I/O
MFP7
PWM0 channel 5 output/capture input.