SWRU640 March   2026

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
      1. 1.4.1 CC2662R-Q1
      2. 1.4.2 BQ79718B-Q1
      3. 1.4.3 TPS3436-Q1
      4. 1.4.4 TPS715-Q1
      5. 1.4.5 TXU0204-Q1
      6. 1.4.6 LM5168-Q1
  8. 2Hardware
    1. 2.1 Power Requirements
      1. 2.1.1 Powering with Batteries and Wiring Harness
      2. 2.1.2 Powering with Source Meter/External Supply and Using the Resistor Ladder
    2. 2.2 Temperature Range
    3. 2.3 Programming, Debug, and Control
      1. 2.3.1 Using a Generic XDS110 Debug Probe, Including a Separate LaunchPad
    4. 2.4 Interfaces
      1. 2.4.1 Debug Interface Connector
      2. 2.4.2 BQ Daisy Chain Interface
    5. 2.5 Jumpers
    6. 2.6 General Features
      1. 2.6.1 BQ DCDC Converter (LM5168-Q1)
      2. 2.6.2 BQ Voltage References
      3. 2.6.3 BQ Resistor Ladder
      4. 2.6.4 BQ Busbar
      5. 2.6.5 CC2662R-Q1 LDO
      6. 2.6.6 CC2662R-Q1 Watchdog
      7. 2.6.7 BQ to Wireless MCU Level Shifter
      8. 2.6.8 Status LEDs
    7. 2.7 Advanced Use of the EVM Hardware
      1. 2.7.1 Base or Stack
      2. 2.7.2 Ring Architecture
      3. 2.7.3 Busbar Position
      4. 2.7.4 Radiated/Conducted Testing
      5. 2.7.5 Communication Isolation
  9. 3Software
    1. 3.1 Software Development
  10. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  11. 5Compliance Information
    1. 5.1 CE Compliance
    2. 5.2 REACH Compliance
    3. 5.3 Waste Electrical and Electronic Equipment (WEEE) Compliance
  12. 6Additional Information
    1. 6.1 Known Hardware or Software Issues
    2. 6.2 Trademarks
    3. 6.3 Terminology
  13. 7References

1.3 Specification

The CSU EVM is equipped with a CC2662R-Q1 wireless MCU and a BQ79718B-Q1 cell monitoring IC. These devices are connected via UART interface through a level shifter (TXU0204-Q1). The UART interface allows for cell monitoring data from the BQ device to be transferred to the wireless MCU device for wireless transmission to the wireless main (WM) device in the WBMS network.

The wireless MCU portion of the EVM is equipped with a 20-pin header to provide an interface with an external board via UART, I2C, or SPI if needed. A 10 pin JTAG debug connecter is also tied to the wireless MCU device to allow for programming and debugging. Additionally, an SMA connector is included to allow for conducted RF testing when configured for conducted testing. The wireless MCU device is also equipped with an external watchdog whose “Watchdog Out” (WDO) signal is tied to the RESET line of the wireless MCU device. This connection can be disabled via an onboard jumper (J11). Power to the wireless MCU device from the BQ device can be enabled/disabled via on board switch (S3) this. In addition, the wireless MCU portion of the EVM can support:

  • 1 additional SPI interface
  • 1 additional UART interface
  • 1 x I²C
  • 1 x I²S
  • Real-time clock (RTC)
  • 12-bit ADC, 200 kSamples/s, 8 channels
  • 8-bit DAC
  • Four 32-bit or eight 16-bit general-purpose timers

The BQ portion of the EVM is equipped with Vertical Interface (VIF) connectors to allow for daisy chaining of additional BQ devices. It comes equipped with a 16-pin header connector for access to the GPIO of the BQ device. Additionally, the EVM is equipped with a resistor ladder to allow for on-board cell emulation.