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Bluetooth v4.1 (BLE) SMART SOC Class II Medical 48-Pin VQFN EP T/R


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Overview of CC2640F128RGZR

The CC2640F128RGZR is a wireless MCU (Microcontroller Unit) from Texas Instruments, featuring Bluetooth Low Energy (BLE) connectivity and a ARM Cortex-M3 processor. It is designed for low-power wireless applications, making it ideal for IoT (Internet of Things) devices and sensor nodes.


(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

  • VDDR: Main power supply
  • RESET: Reset pin
  • DCDC: Power supply for internal DC/DC
  • VDDS: Digital main power supply
  • IOID: Digital I/O pin
  • DCDC_ANA: Analog power for DC/DC
  • ADC IO: Analog-to-Digital Converter I/O pin
  • GPIO: General Purpose I/O pin
  • UART: Universal asynchronous receiver-transmitter
  • I2C: Inter-Integrated Circuit communication
  • SPI: Serial Peripheral Interface

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the CC2640F128RGZR for a visual representation.

Key Features

  • Bluetooth Low Energy (BLE): Enables wireless connectivity with low power consumption.
  • ARM Cortex-M3 Processor: Provides efficient processing power for various applications.
  • Low-Power Design: Optimized for energy-efficient operation in battery-powered devices.
  • Integrated Peripherals: Includes ADC, GPIO, UART, I2C, and SPI interfaces for versatile connectivity.
  • Security Features: Offers secure connections and data transmission for IoT applications.

Note: For detailed technical specifications, please refer to the CC2640F128RGZR datasheet.


  • Internet of Things (IoT) Devices: Suitable for low-power wireless connectivity in IoT devices.
  • Sensor Nodes: Ideal for sensor networks requiring energy-efficient communication.
  • Wearable Technology: Used in wearable devices for Bluetooth connectivity and data transmission.


The CC2640F128RGZR wireless MCU integrates Bluetooth Low Energy technology with an ARM Cortex-M3 processor to enable efficient and low-power wireless communication for IoT and sensor applications.

Usage Guide

  • Power Supply: Connect VDDR and VDDS to the main power supply.
  • Communication Interfaces: Utilize UART, I2C, or SPI for data exchange with external devices.
  • GPIO Configuration: Configure GPIO pins for handling digital I/O operations.

Frequently Asked Questions

Q: Can the CC2640F128RGZR support Bluetooth Classic?
A: The CC2640F128RGZR is specifically designed for Bluetooth Low Energy (BLE) and does not support Bluetooth Classic.

Q: Is the CC2640F128RGZR compatible with Zigbee protocols?
A: While it is possible to implement Zigbee on the CC2640F128RGZR, it is primarily optimized for BLE connectivity.


For similar functionalities, consider these alternatives to the CC2640F128RGZR:

  • nRF52832: Nordic Semiconductor's wireless MCU offering BLE connectivity and ARM Cortex-M4 processing.
  • ESP32: Espressif Systems' dual-core MCU with WiFi and Bluetooth capabilities for IoT applications.


The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Protocols Bluetooth low energy 5.1 Type Wireless MCU
Features LE 1M PHY Peripherals 1 UART, 12-bit ADC 8-channel, 2 SPI, 2 comparators, 4 timers, 8-bit DAC, I2C, I2S, Sensor controller
Rating Catalog Flash memory (kByte) 128
RAM (kByte) 20 Number of GPIOs 10, 15, 31
Security Cryptographic acceleration, Debug security, Device identity, Software IP protection Sensitivity (best) (dBm) -97
Operating temperature range (°C) -40 to 85

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