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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.

Ultra-Low-Power Performance for Connected Edge Devices

01

Ultra-Low-Power Performance

Apollo4 Blue Lite combines MRAM, SRAM, and Ambiq’s turboSPOT® technology to dynamically scale processing performance up to 192 MHz while maintaining ultra-low-power operation.

02

Flexible Application or Coprocessor Design

Apollo4 Blue Lite can serve as either an application processor or coprocessor, giving developers flexibility when designing connected edge and wearable devices.

03

Integrated Bluetooth Low Energy 5.4

A 32-bit Arm® Cortex®-M4 processor with floating-point unit (FPU) and integrated Bluetooth® Low Energy 5.4 connectivity supports efficient processing and wireless connectivity in endpoint devices.

04

Designed for Digital Health and Wearables

Apollo4 Blue Lite combines ultra-low-power operation, graphics acceleration, tracking capabilities, and Bluetooth connectivity for digital health devices, smartwatches, fitness monitors, and other connected wearables.

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

apollo4 blue Lite Evaluation Board

Apollo4 Blue Lite SoC in the BGA package (AMA4B2KL-KXR)

Low power reference design

Multiple power/clock options

USB connector for power/download/debug

Segger J-Link debugger

Debugger-in port (J13) (SWD or ETM)

Three user-controlled LEDs

Two push buttons for application use, plus a reset push button

Power slide switch with LED power indicator

Five headers (J7, J9-J12) for pin/power access to a shield board

High-speed connector (J8 – QSH-030-01-L-D-A) for interfacing to displays and/or high-speed memory

RF switch/connector (Murata MM8430-2610RA1) for BLE PHY testing

Test points for power measurements

Multiple solder-bridge options for power supply flexibility and peripheral access options

RoHS compliant

AP4BLEVB Apollo4 Blue Lite EVB Layout 1600x800 1
AP4BLEVB Apollo4 Blue Lite EVB StraightAngle 1600x800 1
AP4BLEVB Apollo4 Blue Lite EVB RightAngle 1600x800 1
AP4BLEVB Apollo4 Blue Lite EVB Layout 1600x800 1
AP4BLEVB Apollo4 Blue Lite EVB StraightAngle 1600x800 1
AP4BLEVB Apollo4 Blue Lite EVB RightAngle 1600x800 1

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.

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