Texas Instruments CC2662R-Q1 SimpleLink™ Automotive Wireless BMS MCU

Texas Instruments CC2662R-Q1 SimpleLink™ Automotive Wireless Battery Management Systems (BMS) MCU is a high performing solution for wireless electric vehicle (EV) BMS, featuring an independently assessed functional safety concept. Through the advanced wireless protocol, TI’s wireless BMS solution demonstrates how vehicle designers can remove heavy, expensive, maintenance-prone cabling and improve the reliability and efficiency of EVs worldwide. Using a new wireless protocol, developed specifically for the wireless BMS use case, TI’s wireless BMS functional safety concept has addressed communication error detection and security. The proprietary protocol via the CC2662R-Q1 wireless MCU enables robust and scalable data exchange between a host system processor and the BQ79616-Q1 battery monitor and balancer.

TI’s wireless protocol for BMS via the CC2662R-Q1 wireless MCU offers high network availability of greater than 99.999% and a network restart of 300ms maximum availability. Dedicated time slots that provide high throughput and low latency protect data from loss or corruption while enabling multiple battery cells to send voltage and temperature data to the main MCU with ±2mV accuracy and a network packet error rate of less than 10-7. The system is designed to support up to 100 nodes with the industry’s lowest latency of less than 2ms per node and time-synchronized measurements across every node. The CC2662R-Q1 wireless MCU isolates individual cell monitoring units, eliminating the need for and cost of daisy-chain isolation components.

Features

AEC-Q100 qualified with the following results
- Device temperature grade 2 with a -40°C to +105°C ambient operating temperature range
- Device HBM ESD classification level 2
- Device CDM ESD classification level C3
Microcontroller
- Powerful 48MHz Arm® Cortex®-M4F processor
- EEMBC CoreMark® score of 148
- Clock speed up to 48MHz
- 352KB of in-system Programmable Flash
- 256KB of ROM for protocols and library functions
- 8KB of cache SRAM
- 80KB of ultra-low leakage SRAM protected by parity to ensure high-reliability operation
- 2-pin cJTAG and JTAG debugging
- Supports over-the-air upgrade (OTA)
Radio section
- 2.4GHz RF transceiver compatible with TI wireless BMS protocol
- Output power up to +5dBm with temperature compensation
- Suitable for systems targeting compliance with worldwide radio frequency regulations
  - EN 300 328 (Europe)
  - EN 300 440 Category 2 (Europe)
  - FCC CFR47 Part 15 (US)
  - ARIB STD-T66 (Japan)
Low power
- 1.8V to 3.63V supply voltage range
- 6.9mA active mode RX
- 7.3mA active mode TX at 0dBm
- 9.6mA active mode TX at 5dBm
- 3.4mA (71µA/MHz) active mode MCU at 48MHz (CoreMark)
- Sensor controller, low power mode, 2MHz, running infinite loop of 31.9µA
- Sensor controller, active mode, 24MHz, running infinite loop of 808.5µA
- 0.94µA standby (RTC on, 80KB RAM, and CPU retention)
- 150nA shutdown (wakeup on external events)

Peripherals
- 31 GPIOs, digital peripherals can be routed to any GPIO
- 4× 32-bit or 8× 16-bit general-purpose timers
- 12-bit ADC, 200kSamples/s, 8 channels
- 2× comparators with internal reference DAC (1× continuous time, 1× ultra-low power)
- Programmable current source
- 2× UART
- 2× SSI (SPI, MICROWIRE, TI)
- I²C
- I²S
- Real-time clock (RTC)
- AES 128-bit and 256-bit crypto accelerator
- ECC and RSA public key hardware accelerator
- SHA2 accelerator (full suite up to SHA-512)
- True random number generator (TRNG)
- Capacitive sensing, up to 8 channels
- Integrated temperature and battery monitor
External system, on-chip buck DC/DC converter
Ultra-low-power sensor controller with 4KB of SRAM
- Operation independent from system CPU
- Sample, store, and process sensor data
- Fast wake-up for low-power operation
TI-RTOS in ROM
7mm x 7mm VQFN48 package with wettable flanks, RoHS compliant

Applications

Wireless automotive battery management systems (BMS)
Cable replacement

Texas Instruments CC2662R-Q1 SimpleLink™ Automotive Wireless BMS MCU

Features

Applications

Block Diagram

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