Atmosic ATM33 – A Bluetooth LE 5.3 Cortex-M33 MCU with energy harvesting capabilities

Atmosic ATM33 is a Bluetooth LE 5.3 compliant Cortex-M33 microcontroller with optional energy harvesting capabilities that can enable up to 5x longer battery life and even battery-free solutions.

The 64 MHz MCU also comes with 64 KB ROM, 128 KB RAM, 512 KB non-volatile memory, hardware security features, and SensorHub hardware block that allows data to be managed while the majority of the SoC, including the MCU core, is in a hibernated state.

Atmosic ATM33 specifications:

• MCU core – Arm Cortex M33F core @ 64 MHz
• Memory/Storage
  • 64 KB ROM, 128 KB RAM, 512 KB NVM
  • Retention RAM configuration: 16 KB to 128KB in 16 KB step sizes
• Wireless Connectivity
  • Bluetooth Low-Energy 5.3 compliant
  • 2 Mbps, 1 Mbps 500 kbps, and 125 kbps PHY rates
  • Supports Bluetooth Angle-of-Arrival (AoA) and Angle-of-Departure (AoD) direction finding
  • Tx: 0 to 10dB
  • 0.7mA receiver
• 16 MHz / Optional 32.768 kHz Crystal Oscillator
• Atmosic SensorHub
• Energy Harvesting (ATM33e devices only)
  • On-chip RF Energy Harvesting
  • Supports photovoltaic, thermal, motion, etc…
  • External Harvesting/Storage Interface
• Security
  • Arm TrustZone, HW Root of Trust, Secure Boot, Secure Execution & Debug
  • AES-128/256, SHA-2/HMAC 256 Encryption/Cryptographic Hardware Accelerators
  • True random number generator (TRNG)
• Packages – 5×5 40-pin QFN, 7×7 56-pin QFN, or a wafer level chip scale packaging (WLCSP)

The company also provides two evaluation boards one with ATM3330 and the other with ATM3330e adding energy harvesting to let developers check Bluetooth Low Energy capabilities, current consumption measurement in various operating states, or even prototype custom applications. There’s no documentation right now, and we’re being told it is being updated.

ATM33 chips will sample in Q1 2022. More information may be found on the product page and press release.

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