Data Sheet
V1.1 balenaFin Datasheet
Balena Ltd.
HAT connector pinout (13)
Pin #
Name
Notes/Description
Pin #
Name
Notes/Description
1
3V3
3.3V rail, shared with CM
2
5V
5V rail, from regulator
3
I2C1_SDA
Compute Module I2C1 Data
4
5V
5V rail, from regulator
5
I2C1_SCL
Compute Module I2C1 Clock
6
GND
Ground
7
GPIO4
Compute Module GPIO_4
8
GPIO14
Compute Module GPIO_14
9
GND
Ground
10
GPIO15
Compute Module GPIO_15
11
GPIO17
Compute Module GPIO_17
12
GPIO18
Compute Module GPIO_18
13
GPIO27
Compute Module GPIO_27
14
GND
Ground
15
GPIO22
Compute Module GPIO_22
16
GPIO23
Compute Module GPIO_23
17
3V3
3.3V rail, shared with CM
18
GPIO24
Compute Module GPIO_24
19
GPIO10
Compute Module GPIO_10
20
GND
Ground
21
GPIO9
Compute Module GPIO_9
22
GPIO25
Compute Module GPIO_25
23
GPIO11
Compute Module GPIO_11
24
GPIO8
Compute Module GPIO_8
25
GND
Ground
26
GPIO7
Compute Module GPIO_7
27
I2C0_SDA
Compute Module I2C0 Data
28
I2C0_SCL
Compute Module I2C0 Clock
29
GPIO5
Compute Module GPIO_5
30
GND
Ground
31
GPIO6
Compute Module GPIO_6
32
GPIO12
Compute Module GPIO_12
33
GPIO13
Compute Module GPIO_13
34
GND
Ground
35
GPIO19
Compute Module GPIO_19
36
GPIO16
Compute Module GPIO_16
37
GPIO26
Compute Module GPIO_26
38
GPIO20
Compute Module GPIO_20
39
GND
Ground
40
GPIO21
Compute Module GPIO_21
Co-processor connector pinout (25)
Pin #
Name
Notes/Description
Pin #
Name
Notes/Description
1
MCU_GPIO0
Co-processor GPIO_0
2
3V3
3.3V rail, from regulator
3
MCU_GPIO1
Co-processor GPIO_1
4
SPI_MCU_CS-CON_EXT
5
MCU_GPIO2
Co-processor GPIO_2
6
SPI_MCU_CS-SCLK_EXT
7
MCU_GPIO3
Co-processor GPIO_3
8
SPI_MCU_CS-MOSI_EXT
9
MCU_GPIO4
Co-processor GPIO_4
10
SPI_MCU_CS-MISO_EXT
11
MCU_GPIO5
Co-processor GPIO_5
12
DBG_uP-RX_DEV-TX_EXT
13
MCU_GPIO6
Co-processor GPIO_6
14
DBG_uP-TX_DEV-RX_EXT
15
MCU_GPIO7
Co-processor GPIO_7
16
MCU_GPIO8
Co-processor GPIO_8
17
GND
Ground
18
MCU_GPIO9
Co-processor GPIO_9
8