
Alternate
LOCATION
Functionality
0 - 3
4 - 7
8 - 11
12 - 15
16 - 19
20 - 23
24 - 27
28 - 31
Description
GPIO_EM4WU12 0: PC10
Pin can be used to
wake the system
up from EM4
I2C0_SCL
0: PA1
1: PA2
2: PA3
3: PA4
4: PA5
5: PB11
6: PB12
7: PB13
10: PC6
11: PC7
12: PC8
13: PC9
14: PC10
15: PC11
16: PD9
17: PD10
18: PD11
19: PD12
20: PD13
21: PD14
22: PD15
23: PF0
24: PF1
25: PF2
26: PF3
27: PF4
28: PF5
29: PF6
30: PF7
31: PA0
I2C0 Serial Clock
Line input / output.
I2C0_SDA
0: PA0
1: PA1
2: PA2
3: PA3
4: PA4
5: PA5
6: PB11
7: PB12
8: PB13
11: PC6
12: PC7
13: PC8
14: PC9
15: PC10
16: PC11
17: PD9
18: PD10
19: PD11
20: PD12
21: PD13
22: PD14
23: PD15
24: PF0
25: PF1
26: PF2
27: PF3
28: PF4
29: PF5
30: PF6
31: PF7
I2C0 Serial Data in-
put / output.
LETIM0_OUT0
0: PA0
1: PA1
2: PA2
3: PA3
4: PA4
5: PA5
6: PB11
7: PB12
8: PB13
11: PC6
12: PC8
13: PC9
14: PC10
15: PC11
16: PC11
17: PD9
18: PD10
19: PD11
20: PD12
21: PD13
22: PD14
23: PD15
24: PF0
25: PF1
26: PF2
27: PF3
28: PF4
29: PF5
30: PF6
31: PF7
Low Energy Timer
LETIM0, output
channel 0.
LETIM0_OUT1
0: PA1
1: PA2
2: PA3
3: PA4
4: PA5
5: PB11
6: PB12
7: PB13
10: PC6
11: PC7
12: PC8
13: PC9
14: PC10
15: PC11
16: PD9
17: PD10
18: PD11
19: PD12
20: PD13
21: PD14
22: PD15
23: PF0
24: PF1
25: PF2
26: PF3
27: PF4
28: PF5
29: PF6
30: PF7
31: PA0
Low Energy Timer
LETIM0, output
channel 1.
LEU0_RX
0: PA1
1: PA2
2: PA3
3: PA4
4: PA5
5: PB11
6: PB12
7: PB13
10: PC6
11: PC7
12: PC8
13: PC9
14: PC10
15: PC11
16: PD9
17: PD10
18: PD11
19: PD12
20: PD13
21: PD14
22: PD15
23: PF0
24: PF1
25: PF2
26: PF3
27: PF4
28: PF5
29: PF6
30: PF7
31: PA0
LEUART0 Receive
input.
LEU0_TX
0: PA0
1: PA1
2: PA2
3: PA3
4: PA4
5: PA5
6: PB11
7: PB12
8: PB13
11: PC6
12: PC7
13: PC8
14: PC9
15: PC10
16: PC11
17: PD9
18: PD10
19: PD11
20: PD12
21: PD13
22: PD14
23: PD15
24: PF0
25: PF1
26: PF2
27: PF3
28: PF4
29: PF5
30: PF6
31: PF7
LEUART0 Transmit
output. Also used
as receive input in
half duplex commu-
nication.
LFXTAL_N
Connected internal-
ly to a Low Fre-
quency Crystal
(32.768 kHz).
Leave unconnected
externally.
LFXTAL_P
Connected internal-
ly to a Low Fre-
quency Crystal
(32.768 kHz).
Leave unconnected
externally.
MODEM_ANT0
0: PA3
1: PA4
2: PA5
3: PB11
4: PB12
5: PB13
8: PC6
9: PC7
10: PC8
11: PC9
12: PC10
13: PC11
15: PD10
16: PD11
17: PD12
18: PD13
19: PD14
20: PD15
21: PF0
22: PF1
23: PF2
24: PF3
25: PF4
26: PF5
27: PF6
28: PF7
29: PA0
30: PA1
31: PA2
MODEM antenna
control output 0,
used for antenna
diversity.
MODEM_ANT1
0: PA4
1: PA5
2: PB11
3: PB12
4: PB13
7: PC6
8: PC7
9: PC8
10: PC9
11: PC11
12: PC11
14: PD10
15: PD11
16: PD12
17: PD13
18: PD14
19: PD15
20: PF0
21: PF1
22: PF2
23: PF3
24: PF4
25: PF5
26: PF6
27: PF7
28: PA0
29: PA1
30: PA2
31: PA3
MODEM antenna
control output 1,
used for antenna
diversity.
BGM11S Blue Gecko
Bluetooth
®
SiP Module Data Sheet
Pin Definitions
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