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  • Operating Voltage: 3.3V
  • Battery Holder: CR1220
  • Dimensions: 25.4 mm x 38.1 mm
  • Weight: 12 g (pins soldered)
  • I2C Address:
  • 0x2F default address
  • 0x54 address when ADR1 is short-circuited
  • 0x73 address when ADR2 is short-circuited
  • 0x74 address when ADR1 and ADR2 are short-circuited
  • The product includes 1 I2C connection cable, 10 cm in length.

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Header (Left)

Module PinDescriptionDevelopment Board Pin
3.3V3.3V Supply Voltage3.3V Voltage Output
RESETMicrocontroller Reset (Debug)
ADDET_NButton No.2 Capacitive Sensing Interface Pin
RES_NButton No.4 Capacitive Sensing Interface Pin
FORCEButton No.6 Capacitive Sensing Interface Pin
1PPSButton No.7 Capacitive Sensing Interface Pin

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Header (Right)

Module PinDescriptionDevelopment Board Pin
GNDGroundGround
SDABidirectional Data LineSDA
SCLData Line Clock Synchronization SignalSCL
SWIMMicrocontroller SWIM Communication Protocol (Debug)No Connection
RXUART Interface Data InputTX
TXUART Interface Data OutputRX

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I2C Communication Connectors

Module PinDescriptionDevelopment Board Pin
SCLData Line Clock Synchronization SignalSCL
SDABidirectional Data LineSDA
3V33.3V Supply Voltage3.3V Voltage Output
GNDGroundGround