Jumpers, SW1,SW2

JP1

I2C Pull-ups Voltage when JP2 1-2 closed

1-2

3.3V

2-3

5V

Should not be used with 3.3V configurations

JP2

I2C Pull-ups Voltage

1-2

Internal

2-3

External DB9.2

Can not be used in Serial configurations

JP3

SCL Pull-up

1-2

On

2-3

Off

JP4

SDA Pull-up

1-2

On

2-3

Off

JP5

SPI Voltage when JP6 1-2 closed

1-2

3.3V

2-3

5V

JP6

SPI Voltage

1-2

Internal

2-3

External J6.9 or DB9.3

Only for Lxxx configurations.

DB9.3 Can not be used as SPI Voltage in Serial configurations

J7

GPIO Voltage

left

5V

rigth

3.3V

BOOT,SW1

Force Bootloader on Power Reset

Closed or Pressed

SW2

Force Monitor on Power Reset

Pressed

Only for Serial2 configurations