Skip to content

Home

Jump to bottom
Gerard Braad edited this page Nov 11, 2019 · 31 revisions

About the SmartMovt C001S module

智芯C001S - This movement is a combination of a regular watch movement/gearbox and a Nordic Semiconductor ARM-based processor to provide connectivity and integration with other sensors. This module has been used by both the Lenovo Watch 9 and Lenovo Watch S. Likely, this is also the module as used in the Simble smartwatch as advertised by SmartMovt

Movement/PCB photos

Components

  • nRF52832 (N52832 CIAABO) product info, product brief, product spec
    • Cortex-M4 at 64Mhz
      • 512kB Flash
      • 64kB RAM
    • 2.4 GHz transceiver
  • Miyota/Citizen LTD 3 hand 2035 movement, product info
    • two-pole stepping motor
  • vibration motor
  • flash memory
    Likely used to store the 30 day history, alarm settings, etc.
  • gyroscope/accelerometer
    Likely used as the step counter and raise to wake function

Pin mapping

  • VBAT
  • VDO
  • BAT (might actually read BAT- as this is GND)
  • GND
  • M_RST
  • push buttons
    These are pulled to GND and are identical to the outside button domes.
    • KEY1 (top button, not used)
    • KEY2 (middle button, crown)
    • KEY3 (bottom button, not used)
  • gyro and accelerometer ? (SPI)
    • G_SDI
    • G_SDO
    • G_SCLK
    • G_CS
  • flash ? (SPI)
    • F_SDI
    • F_SDO
    • F_SCLK
    • F_CS
  • Serial/UART ?
    • U_RX
    • U_TX
  • Stepper motor interface
    These are directly connected to the other side of the PCB which interfaces with the movement module
    • MI+
    • MI-
  • two unnamed pads with pogo pins which are connected to GND
  • two battery terminal pads
    • CR2032 + (connected to VBAT)
    • CR2032 - (connected to BAT, GND)
  • SWD
    • F1 - SWDCLK
    • G1 - SWDIO

Note 1: also see the nRF52832 documentation for the pin assignment

Note 2: the SPI devices do not share the CLK and data lines, so it looks like they are set up in a multi-master, meaning that each device has it's own set of pins.

External resources

Firmware

Product images

Clone this wiki locally