The ATM3 Series

The ATM3 Series is a family of extreme low-power Bluetooth® 5 system-on-a-chip (SoC) solutions.

This Bluetooth Low Energy SoC integrates a Bluetooth 5 radio with an ARM® Cortex® M0 processor and state-of-the-art power management to enable maximum lifetime in battery-operated devices.

The extremely low power ATM3 series SoC is designed with an extensive set of peripherals and flexible I/O to support a wide variety of applications across the consumer, commercial, and industrial Internet of Things (IoT) markets.

The ATM3 has an enhanced Power Management Unit

The enhanced Power Management Unit supports energy harvesting devices, multiple energy storage options, and intelligent power distribution.

The on-chip RF Energy Harvester has a dedicated antenna port and a separate input for energy from photovoltaic, mechanical, and thermal harvesting devices. Storage of harvested energy is facilitated through a separate port for connection of capacitive storage or a rechargeable battery.

With its ability to harvest energy from multiple sources and manage energy storage, the ATM3 is a flexible SoC solution for a wide range of consumer, commercial, and industrial products.

The ATM3 series is available in 40 pin QFN package (ATM3201/3202), 64 pin DR-QFN package (ATM3221), or 56-pin QFN (ATM3231). All package options support the same core set of features with the number of available I/O based on the package type.

An integrated Sensor Hub is a configurable hardware element that can read data from external sensors and write to memory while all other power domains remain powered down. The Sensor Hub can also trigger a full CPU wakeup if the sensor value falls outside pre-set thresholds.

An independent RF Wakeup Receiver is a separate RF receiver that scans for an incoming paging or wakeup signal while the rest of the SoC remains in a very low power state. The wakeup signal can be from a Bluetooth device, mobile phone, or a dedicated transmitter over a wide range of RF frequencies.

The ATM3 supports a wide range of peripherals through its I/O interface including UART, I2C, SPI, and Quad SPI for external flash. Also included is hardware for a Pulse Density Modulated (PDM) digital microphone, Pulse Width Modulation (PWM) outputs, Quadrature decoder (QDEC) for sensor inputs, Keyboard Scan Matrix Controller (KSM), Analog Comparator, and Application ADC. Flexible pin muxing routes peripherals to the I/O pins based on the application and product requirements.

Bluetooth LE

• Bluetooth Low-Energy 5.0 compliant
• 2 Mbps, 1 Mbps, 500 kbps, and 125 kbps PHY rates

CPU and Memory

• 16 MHz ARM® Cortex® M0 CPU
• 256 KB ROM, 128 KB RAM, 4K OTP, 1 MB NVM (optional)
• Retention RAM configuration: 16 KB to 128KB in 16 KB step sizes
• 16 MHz / Optional 32.768 kHz Crystal Oscillator

Security

• AES-128 Hardware Accelerator
• True random number generator (TRNG)

Energy Harvesting

• On-chip RF Energy Harvesting
• Supports photovoltaic, thermal, motion, and other energy harvesting technologies
• External Harvesting/Storage Interface

RF and Power Management

• Fully integrated RF front-end
• Sensor Hub
• RF Wakeup Receiver
• 1.1 V to 3.3 V battery input voltage with integrated Power Management Unit (PMU)
• SoC typical power consumption with 3 V battery including PMU
  • Active Rx @ -95 dBm: 1 mA
  • Active Tx @ 0 dBm: 2.5 mA
  • Retention @ 32 KB RAM: 2 µA
  • Hibernate: 0.7 µA

Industrial, Enterprise, and Smart Cities

• Beacons
• Asset Trackers
• Remote Sensors
• Environmental Monitors

Healthcare

• Asset Trackers
• Wayfinding
• Wearables

Home

• Home Automation
• Remote Control
• Human Interface Devices (HID)

Personal

• Gaming
• Wearables

Auto

• Key fobs
• Accessories

ATM3 Series Feature Comparison

Product Briefs:

• Wirelessly Powered Sensor Development Kit Product Brief - July 5, 2022
• ATM3202 Product Brief - March 21, 2022
• ATM32x1 Product Brief - March 21, 2022

Datasheets:

• ATM32x1 Bluetooth 5 SoC with Energy Harvesting Datasheet - November 22, 2024
• ATM3202 SoC with Embedded Flash & Energy Harvesting Datasheet - November 22, 2024

Design Guides:

• ATM2/ATM3 Hardware Design Guide - November 22, 2024

Whitepapers

• Atmosic Energy Harvesting Advantage White Paper

ATM3 Series Kits