Texas Instruments CC2640R2FRHBT

Overview

CC2640R2FRHBT from Texas Instruments is a Bluetooth® 5.1 Low Energy wireless microcontroller integrating an Arm® Cortex®-M3 CPU (48 MHz), 128 KB Flash, 20 KB SRAM, ultra-low power sensor controller, and 2.4-GHz RF transceiver with –97 dBm RX sensitivity and +5 dBm programmable TX output. It supports BLE Coded PHY (Long Range) and 2-Mbit PHY (High Speed), and targets battery-powered building security, medical sensors, and industrial asset tracking.

For engineers reviewing the CC2640R2FRHBT datasheet, CC2640R2FRHBT pinout, CC2640R2FRHBT application, or CC2640R2FRHBT equivalent, key selection criteria include its 5-mm × 5-mm RHB VQFN32 package with 15 GPIOs, 1.1 µA standby current with full RAM retention, integrated DC/DC converter, and ROM-resident BLE 5.1 protocol stack enabling >10-year coin-cell operation in sensing nodes.

Technical Context

The CC2640R2FRHBT implements a dual-core architecture: an Arm Cortex-M3 main CPU handles application and BLE host/controller tasks, while a dedicated Arm Cortex-M0 radio controller manages RF PHY layer timing and modulation. Its sensor controller engine operates autonomously at sub-µA levels, supporting 1-Hz ADC sampling with only 1 µA system current.

RF performance is defined by Bluetooth 5.1 compliance-including LE Coded PHY (125/500 kbps) and 2-Mbps GFSK-with link budget of 102 dB, selectivity >50 dB, and support for single-ended or differential RF interface. Power management includes three supply domains (VDDS, VDDR, VDDR_RF) and configurable low-power modes down to 100 nA shutdown.

Key Specifications

Pinout & Package

CC2640R2FRHBT is packaged in a 5-mm × 5-mm RHB VQFN32 (0.5-mm pitch) with exposed thermal pad. This RoHS-compliant package supports 15 GPIOs, including 8 analog-capable pins (DIO_7 to DIO_14) and 6 high-drive digital I/Os (DIO_2 to DIO_4, DIO_5, DIO_6, JTAG_TMSC).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Bluetooth Low Energy wireless MCU applications.

Compared with CC2642R1FRGZR and nRF52840-QIAA, the CC2640R2FRHBT delivers optimal balance of BLE 5.1 feature completeness, ultra-low power (1.1 µA standby), and minimal BOM count-making it the preferred choice for cost-sensitive, long-life battery applications where multiprotocol or USB are unnecessary.

Availability

CC2640R2FRHBT is available at Aetrix Electronics and suitable for smart lock systems, wireless medical sensors, industrial asset trackers, and connected lighting nodes requiring stable component supply across multi-year production cycles.

Supply support for CC2640R2FRHBT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions, with over 90 years of innovation in low-power wireless, precision analog, and real-time control technologies.

The CC2640R2FRHBT belongs to TI's SimpleLink™ Wireless MCU platform, designed specifically for ultra-low power, certified Bluetooth 5.1 applications in constrained battery-operated endpoints across building automation, healthcare, and industrial IoT.

FAQ

What Bluetooth® versions and features does the CC2640R2FRHBT support?

The CC2640R2FRHBT supports Bluetooth 5.1 Low Energy specifications, including LE Coded PHY (Long Range), LE 2-Mbit PHY (High Speed), Advertising Extensions, and Multiple Advertisement Sets. It maintains full backward compatibility with Bluetooth 4.x and earlier LE standards. The device includes a fully qualified BLE 5.1 software stack stored in ROM, enabling immediate deployment without external flash dependency. CC2640R2FRHBT also supports proprietary 2.4 GHz protocols via its programmable radio controller.

Does the CC2640R2FRHBT include an integrated DC/DC converter?

Yes, the CC2640R2FRHBT integrates a highly efficient on-chip DC/DC converter that replaces external buck regulators. It generates regulated 1.7–1.95 V supplies (VDDR and VDDR_RF) from the main 1.8–3.8 V input (VDDS), improving system efficiency and reducing PCB area. The converter is enabled by default and requires only a single external 1.27-V decoupling capacitor (DCOUPL pin) for stable operation. CC2640R2FRHBT's DC/DC design contributes directly to its 1.1 µA standby current specification.

How many GPIOs and analog-capable pins does the CC2640R2FRHBT provide?

The CC2640R2FRHBT in the RHB VQFN32 package provides 15 GPIOs. Of these, 8 pins (DIO_7 through DIO_14) are analog-capable and support ADC input, comparator functions, and capacitive sensing. Six pins (DIO_2, DIO_3, DIO_4, DIO_5, DIO_6, and JTAG_TMSC) offer high-drive capability (≥4 mA) for direct LED or relay interfacing. All digital peripheral signals-including UART, I²C, SSI, and timers-can be remapped to any GPIO via software configuration, enhancing layout flexibility. This capability is consistent across CC2640R2FRHBT and other members of the CC2640R2F family.

What is the role of the sensor controller in the CC2640R2FRHBT?

The CC2640R2FRHBT includes a dedicated 16-bit ultra-low power sensor controller CPU with 2 KB SRAM, capable of running autonomously while the main Cortex-M3 remains in deep sleep. It executes sensor acquisition routines-including ADC sampling, comparator monitoring, and timer sequencing-at sub-µA currents. For example, the sensor controller can perform 1-Hz temperature measurements with total system current below 1 µA. This offloads sensing tasks from the main CPU, significantly extending battery life in always-on monitoring applications. The sensor controller is integral to CC2640R2FRHBT's architecture and cannot be disabled.

Is the CC2640R2FRHBT pin-compatible with other SimpleLink™ devices?

Yes, the CC2640R2FRHBT is pin-compatible with the CC1350 in 4-mm × 4-mm RSM and 5-mm × 5-mm RHB VQFN packages, and with the CC2642R and CC2652R in the 7-mm × 7-mm RGZ VQFN48 package. However, it is not pin-compatible with the smaller 2.7-mm × 2.7-mm YFV DSBGA34 variant due to differing pin counts and layouts. Pin compatibility enables reuse of reference designs and simplifies migration between BLE-only (CC2640R2F) and multiprotocol (CC2642R/CC2652R) variants-though firmware and RF layout adjustments may still be required. CC2640R2FRHBT retains identical signal naming and electrical behavior across compatible packages.