The TLSR8258 with internal Flash and audio support combines the features and functions needed for all 2.4GHz IoT standards into a single SoC. It supports standards and industrial alliance specifications including Bluetooth Low Energy (up to Bluetooth 5, with up to 8 antenna indoor positioning support), BLE Mesh, Zigbee, RF4CE, HomeKit, 6LoWPAN, Thread, ANT and 2.4GHz proprietary standard. For some use cases, the TLSR8258 supports concurrent multi-standards.

The TLSR8258 integrates a power-balanced 32-bit MCU, BLE/802.15.4/2.4GHz Radio, 64kB SRAM, 512kB Flash, 14bit ADC with PGA, Analog and Digital Microphone input, stereo audio output, 6-channel PWM, one quadrature decoder (QDEC), flexible IO interfaces, and other peripheral blocks required for IoT (Internet of Things) applications. The TLSR8258 also includes multi-stage power management design allowing ultra-low power operation and making it the ideal candidate for wearable and power-constraint applications.


  • Smartphone and tablet accessories
  • RF Remote Control
  • Sports and fitness tracking
  • Wearable devices
  • Wireless toys
  • Smart Lighting, Smart Home devices
  • Building Automation
  • Smart Grid
  • Intelligent Logistics/Transportation/City
  • Consumer Electronics
  • Industrial Control
  • Health Care


Key Features

4-byte chip unique ID (UID)

32bit proprietary microcontroller

  • Better power-balanced performance than ARM M0
  • Instruction cache controller
  • Maximum running speed up to 48MHz

Memory architecture

  • Program memory: 512kB Flash
  • 64kB on-chip SRAM with up to 32kB retention
  • Flash preloaded with UID
  • Firmware protection for anti-cloning

RF transceiver

  • BLE/802.15.4/2.4GHz RF transceiver in worldwide 2.4GHz ISM band
  • Bluetooth 5 Compliant, 1Mbps, 2Mbps, Long Range 125kbps and 500kbps
  • 15.4 compliant, 250kbps
  • 4GHz proprietary 1Mbps/2Mbps/250kbps/500kbps mode with Adaptive Frequency Hopping feature
  • ANT mode
  • Rx Sensitivity: -96.5dBm@BLE 1Mbps, -100dBm@ IEEE802.15.4 250kbps, -94dBm @ BLE 2Mbps mode
  • Tx output power: up to +10dBm
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