STM32WB35CCU6ATR

RF Transceiver ICS Overview

The STM32WB35CCU6ATR is a multiprotocol wireless microcontroller featuring an Arm Cortex-M4 core at 64 MHz and a dedicated Cortex-M0+ core at 32 MHz. It integrates 256 Kbytes of Flash memory and 96 Kbytes of SRAM. The device supports Bluetooth LE 5.4, IEEE 802.15.4, Thread, Zigbee, and Matter protocols in the 2.4 GHz to 2.48 GHz frequency range. Key electrical parameters include a supply voltage of 1.71V to 3.6V, -100 dBm sensitivity, 2 Mbps data rate, and 6 dBm output power. It operates between -40°C and 105°C in a 48-pin UFQFPN package.

RF Transceiver ICS Feature Summary

• Dual-core architecture with high-performance Cortex-M4 and low-power Cortex-M0+ for efficient protocol handling
• Integrated hardware security engines including AES-256, PKA, and RNG for cryptographic operations
• Supports multiple wireless standards including Bluetooth LE 5.4, Thread, Zigbee, and Matter
• Includes extensive peripherals such as Quad-SPI, USB, and fourteen DMA channels

RF Transceiver ICS Applications

• Smart home devices requiring Matter or Thread connectivity
• Bluetooth Low Energy sensor nodes and beacons
• Industrial IoT gateways supporting 802.15.4 networks
• Wireless lighting control systems using Zigbee protocols

RF Transceiver ICS Procurement Notes

Verify the specific suffix 'U6ATR' confirms the 48-pin UFQFPN package and tape-and-reel packaging format. Ensure compatibility with the required operating temperature range of -40°C to 105°C. Confirm that the 256 KB Flash variant meets application storage needs, distinguishing it from higher-capacity models in the WB35 series. Check moisture sensitivity level requirements for assembly processes.

RF Transceiver ICS Selection Notes

Select this component when a balance of processing power and ultra-low power consumption is required for multiprotocol applications. The dual-core design allows the Cortex-M0+ to handle real-time radio tasks while the Cortex-M4 manages application logic. Choose this part over single-core MCUs if hardware security features like PKA and AES are mandatory for protocol compliance. Consider the 48-pin package constraints against available PCB space and I/O requirements.

RF Transceiver ICS Part Context

This device belongs to the STM32WB35xx series, which offers lower memory capacity compared to the STM32WB55xx series. While the WB55 provides up to 1 MB of Flash, the WB35 variant is optimized for cost-sensitive applications requiring 256 KB of Flash. Both share the same dual-core architecture and wireless capabilities, allowing for scalable product development within the same ecosystem.

RF Transceiver ICS Replacement Considerations

STM32WB35CEU6ATR: Offers identical functionality but with increased memory (512 KB Flash, 96 KB SRAM).

RF Transceiver ICS FAQ

Does the STM32WB35CCU6ATR support the Matter protocol?

Yes, the device firmware and hardware support Matter over Thread and Matter over Bluetooth LE.

What is the maximum operating frequency of the main processor?

The Arm Cortex-M4 core operates at a maximum frequency of 64 MHz.