Apollo3 Blue Thin

Connected and Smart

Apollo3 Blue Thin introduces Bluetooth® Low Energy to the popular Apollo3 platform for connected devices. Discover the endless possibilities of endpoint AI devices in the connected world.

Tomorrow’s Connected World Made Inevitable


Smarter Homes

Elevate the smart home experience without forfeiting on battery life.


Healthier Lives

Low sleep power and a rich set of peripherals enable medical devices to track health metrics all day long.


More Connected

Ultra-low power processing meets connectivity on Apollo3 Blue Thin’s Bluetooth® Low Energy radio for IoT endpoint devices


Increasingly Personalized

Tailor to the individual with ultra-low power turboSPOT® that inspires wearables, smart home, and IIoT devices to do more.

Block Diagram for the Ultra-Low Power Apollo3 Blue Thin SoC


Ultra-Low Supply Current

  • 6 μA/MHz executing from flash or RAM at 3.3 V
  • 1 μA deep sleep mode (Bluetooth Low Energy Off) with RTC at 3.3 V (Bluetooth Low Energy in SD)

High-Performance Arm Cortex-M4 Processor

  • Up to 48 MHz nominal clock frequency with 96 MHz performance TurboSPOT Mode
  • Floating Point Unit (FPU)
  • Memory Protection Unit (MPU)
  • Wake-up interrupt controller with 32 interrupts

Integrated Bluetooth Low Energy Module

  • RF sensitivity: -93 dBm (typical)

Ultra-Low Power Memory

  • Up to 1MB of flash memory for code/data
  • Up to 384KB of low power RAM for code/data
  • 16KB 2-way Associative/Direct-Mapped Cache

Ultra-Low Power Interface for On- and Off-Chip Sensors

  • 14-bit ADC, 15 selectable input channels available
  • Up to 2.67 MS/s sampling rate
  • Voltage Comparator (VCOMP)
  • Temperature sensor with ±3°C accuracy after calibration

Ultra-Low Power Flexible Serial Peripherals

  • ISO7816 Secure interface
  • 1x 2/4/8-bit SPI master interface (MSPI)
  • 6x I2C/SPI masters for peripheral communication
  • 1x I2C/SPI slave for host communications
  • 2x UART modules with 32-location Tx and Rx FIFOs
  • PDM for mono and stereo audio microphones
  • 1x 12S slave for PDM audio pass-through

Rich Set of Clock Sources

  • 32.768 kHz Crystal (XTAL) oscillator
  • Low Frequency RC (LFRC) oscillator (1.024 kHz)
  • High Frequency RC (HFRC) oscillator (48 MHz)
  • RTC based on Ambiq’s AM08X5/18X5 family

Wide Operating Range

  • 1.755-3.63 V, -40°C to 85°C


  • Voice-on-SPOT compatible for always-listening keyword detect, audio command recognition and voice
  • Wearables including smart watches and fitness/activity trackers
  • Hearing aids, Digital Health Monitoring and Sensing Devices
  • Smart Home Automation, Security and Lighting control applications

Package Options

  • 5 mm x 5 mm, 81-pin BGA with 50 GPIO
  • 3.25 mm x 3.37 mm, 66-pin WLCSP 300um with backside coating (Thin)
  • 3.25 mm x 3.37 mm, 66-pin WLCSP with 37 GPIO
  • 8 mm x 8 mm, 64-pin QFN with 38 GPIO

Ordering Information

  • AMA3B1KK-KBR-B0 (384KB, 81-pin BGA)
  • AMA3B1KK-KCR-B0 (384KB, 66-pin WLCSP)
  • AMA3B1KK-KCR-TB (non-Bluetooth Low Energy, 384KB, 66-pin WLCSP)
  • AMA3B1KK-KQR-B0 (384KB, 64-pin QFN)

Design Resources

Browse our Design Resources which includes product briefs, datasheets, selector guides, family brochures, white papers, quick start guides, and more to help you learn more about products.

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