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Apollo4 Blue Lite

Healthcare Reimagined

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The Apollo4 Blue Lite SoC is an ultra-low power solution for connected wearables and digital health devices. It combines an Arm® Cortex®-M4 processor with Bluetooth® Low Energy 5.4 connectivity, including AoA/AoD support, MRAM, SRAM, and Ambiq’s turboSPOT® dynamic performance scaling up to 192 MHz. Apollo4 Blue Lite can operate as an application processor or coprocessor for smartwatches, digital health devices, and other edge wearables.

Take Charge of Your Life

01

Optimum Flexibility

Embedded with MRAM, SRAM, ultra-low power processors, solid software stacks, and up to 192 MHz operating frequency with turboSPOT®, Apollo4 Blue Lite offers developers optimum flexibility.

02

Multipurpose SoC

Created to serve as either an application processor or coprocessor, Apollo4 Blue Lite is engineered for edge devices.

03

Ideal for Mainstream

Apollo4 Blue Lite includes features a 32-bit Arm® Cortex®-M4 core with Floating Point Unit, along with a Bluetooth® Low Energy 5.4 radio with robust RF connectivity.

04

Improved Health Within Reach

As smart wearables become increasingly indispensable, Apollo4 Blue Lite injects the health sector with vibrant graphics, state-of-the-art tracking, battery life, and affordability.

Block Diagram Apollo4 Blue Lite

Block Diagram for the Ultra Low Power Apollo4 Blue Lite

Specifications

Ultra-Low Supply Current

  • 4 µA/MHz executing from MRAM (with cache)
  • Low power and deep sleep mode selectable levels of RAM/cache retention

High-Performance Arm Cortex-M4 Processor with FPU

  • Up to 192 MHz clock frequency
  • Memory protection unit (MPU)
  • Secure Boot
  • PSA-L1 certified

Bluetooth Low Energy 5.4

  • 2 Mbps, extended advertising packets
  • Angle of Arrival (AoA)/Angle of Departure (AoD)
  • Tx: up to +6 dBm output power
  • Rx Sensitivity: -95 dBm

Ultra-Low Power Memory

  • Up to 2MB of non-volatile MRAM for code/data
  • Up to 1.4MB of low power SRAM for code/data

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

  • 12-bit ADC, 11 selectable input channels
  • Up to 2.8 MS/s sampling rate
  • Temperature sensor with ±3°C accuracy

Ultra-low Power Flexible Serial Peripherals

  • 2x 2/4/8-bit SPI master interface
  • 1x 2/4/8/16-bit SPI master interface
  • 7x I2C/MSPI for peripheral communication
  • 1x SPI Slave for host communications
  • 4x UART modules with flow control
  • 1x SDIO (SD3.0)/1x eMMC (v4.51)

Display

  • Up to 500 x 500 resolution
  • Frame Buffer Decompression

Graphics


graphicSPOT logo

  • 2D/2.5D graphics accelerator
  • Texture and frame buffer compression
  • Dithering and anti-aliasing

Audio Processing

  • 1x stereo PDM
  • 1x full-duplex I2S ports

Rich Set of Clock Sources

  • 16-52 MHz and 32.768 kHz Crystal XTAL oscillators
  • 1 kHz Low Frequency RC (LFRC) oscillator
  • 2x High Frequency RC (HFRC) oscillator – 192/384 MHz

Power Management

  • Operating range: 1.71-2.2 V, –20°C to 60°C
  • SIMO Buck
  • Multiple I/O voltages

Applications

  • Smart watches/bands
  • Wireless sensors and IoT
  • Activity and fitness monitors
  • Children’s watches
  • Digital health devices
  • Animal trackers
  • Motion and tracking devices
  • Alarms and security system
  • Far-field voice remotes
  • Predictive maintenance
  • Smart home

Package Options

  • 4.7 mm x 4.7 mm, 131-pin SIP BGA

Ordering Information

  • AMA4B2KL-KXR
  • AMA4BLEVB

Design Resources

Additional Documentation

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Frequently Asked Questions (FAQ)

  • The Apollo4 Blue Lite is an ultra-low-power system-on-chip (SoC) designed for connected edge devices. It combines a 32-bit Arm® Cortex®-M4 processor with floating-point unit (FPU), Bluetooth® Low Energy 5.4 connectivity, and up to 192 MHz performance. It can serve as either an application processor or coprocessor.

  • The Apollo4 Blue Lite features a 32-bit Arm® Cortex®-M4 processor with a floating-point unit (FPU) and Memory Protection Unit (MPU), operating at up to 192 MHz. Ambiq’s turboSPOT® technology enables dynamic performance scaling for ultra-low-power endpoint applications.

  • The Apollo4 Blue Lite supports Bluetooth® Low Energy 5.4 with 2 Mbps operation, extended advertising packets, Angle of Arrival (AoA) and Angle of Departure (AoD), up to +6 dBm transmit power, and -95 dBm receiver sensitivity.

  • Ambiq’s turboSPOT® technology enables the Apollo4 Blue Lite to dynamically scale performance up to 192 MHz. The SoC delivers ultra-low-power processing at 4 µA/MHz when executing from MRAM with cache, helping developers balance processing performance and energy efficiency.

  • The Apollo4 Blue Lite is PSA Certified Level 1 and includes Secure Boot to help protect connected endpoint applications.

  • The Apollo4 Blue Lite features a 2D/2.5D graphics accelerator with texture and frame buffer compression, dithering, and anti-aliasing. It supports displays with resolutions up to 500 × 500 pixels and includes frame buffer decompression.

  • The Apollo4 Blue Lite provides up to 2 MB of non-volatile MRAM for code and data and up to 1.4 MB of low-power SRAM for code and data. 

  • The Apollo4 Blue Lite is designed for smartwatches and fitness bands, wireless sensors and IoT devices, activity and fitness monitors, children’s watches, digital health devices, animal trackers, motion and tracking devices, alarms and security systems, far-field voice remotes, predictive maintenance, and smart home applications.

  • The Apollo4 Blue Lite is available in a compact 4.7 × 4.7 mm, 131-pin SiP BGA package. The Apollo4 Blue Lite SoC ordering part number is AMA4B2KL-KXR.

  • Apollo4 Blue Lite and Apollo4 Blue Plus both support Arm® Cortex®-M4 processing up to 192 MHz, Bluetooth® Low Energy 5.4, and 2D/2.5D graphics acceleration. Apollo4 Blue Lite provides up to 1.4 MB of low-power SRAM, while Apollo4 Blue Plus provides up to 2.75 MB of low-power RAM and adds expanded graphics, display, audio, connectivity, and security capabilities. 

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