Users Manual

HM-BT2204 V1.0
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6.2 Module Pin Definition
PinNo
PinName
Type
Description
1
PB2
I/O
General GPIO
2
PB1
I/O
General GPIO
3
PB0
I/O
General GPIO
4
PA0
I/O
General GPIO
5
PA1
I/O
SWCLK; Serial Clock for Debugging and
Programming
6
PA2
I/O
SWDIO; Serial Data for Debugging and
Programming
7
PA3
I/O
General GPIO
8
PA4
I/O
General GPIO
9
TXD
DO
PA5;UARTTXD
10
RXD
DI
PA6;UARTRXD
11
GND
DG
Power Ground
12
GND
DG
Power Ground
13
PD1
I/O
General GPIO ; 32.768KHz Crystal Pin
14
PD0
I/O
General GPIO ; 32.768KHz Crystal Pin
15
VCC
DV
Power Supply 3.3V
16
GND
DG
Power Ground