Apollo4 01

Apollo4 SoC EVB

The Apollo4 SoC family is the 4th generation system processor solution built upon the Ambiq® proprietary Subthreshold Power-Optimized Technology (SPOT®) platform. Apollo4's complete hardware and software solution enables the battery-powered endpoint devices of tomorrow to achieve a higher level of intelligence without sacrificing battery life. Moreover, designers can securely develop and deploy products confidently with our secureSPOT® technology and PSA-L1 certification.

Securely develop and deploy products with confidence

Apollo4 SoC EVB

Block Diagram for the Ultra-Low Power Apollo4 SoC

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With up to 192 MHz clock frequency enabled by Ambiq's turboSPOT®, Apollo4 can achieve power efficiency as low as 5 µA/MHz when executing from SRAM and MRAM with cache. Coupled with up to 2MB of MRAM and 1.8MB of SRAM, the Apollo4 has more than enough compute and storage to handle complex algorithms and neural networks while displaying vibrant, crystal-clear, and smooth graphics. If additional memory is required, external memory is supported through Ambiq’s multi-bit SPI and eMMC interfaces.
Apollo4 is purpose-built to serve as both an application processor and a coprocessor for battery-powered endpoint devices, including smartwatches, children’s watches, fitness bands, animal trackers, far-field voice remotes, predictive health and maintenance, and the smart home.

Apollo4 enables manufacturers to create leading-edge endpoint devices leveraging the unique SPOT platform with Ambiq’s easy-to-use, rich peripheral set.

Purpose-built SoC

Innovate for a wide range of endpoint IoT devices with powerful processing capability using an Arm® Cortex®-M4F core and turboSPOT® high frequency operation. With ample memory, this platform is engineered to drive battery-powered graphics, audio solutions, and more.

Extreme Low Power Modes

Push the longevity of battery-operated devices with unprecedented power efficiency. Make the most of your power budget with our flexible, low-power sleep and deep sleep modes with selectable levels of RAM/cache retention.

Superior Graphics and Display

Use our highly energy efficient 2/2.5D graphics accelerator to implement high quality graphics. A MIPI DSI high-speed interface coupled with support for 32-bit color and 500x500 pixel resolution enables developers to create compelling Graphical User Interfaces (GUIs) for battery-operated IoT devices.

Always-on Audio

Experience truly always-on voice processing with an optimized noise cancelling algorithms for clear voice. Achieve multi-channel processing and high-fidelity digital audio with enhanced digital filtering and low power audio interfaces.

More Options with Low Power Peripherals

Connect to more devices with our wide selection of low power communication ports, including USB. Use SDIO/eMMC for additional storage to help meet your application memory requirements.

Get to Market Faster

Develop with AmbiqSuite SDK using your preferred tool chain. We offer support documents and reference code that can be repurposed to accelerate your development time. In addition, our outstanding technical support team is ready to help bring your design to production.

Safe and Secure

Design with confidence using Ambiq's robust secureSPOT® technology to ensure a complete end-to-end secure environment for your application. Our solution is PSA-L1-certified and provides a wide range of security features such as Secure Boot, secure over-the-air (OTA) and wired updates, secure key storage in OTP memory, secure debug and more. In addition, hardware cryptographic accelerators support a True Random Number Generator (TRNG) and an array of encryption algorithms.


Ultra-Low Supply Current

5 μA/MHz executing from MRAM (with cache)

Low-power sleep and deep sleep modes with selectable levels of RAM/cache retention

High-Performance Arm Cortex-M4 Processor with FPU

Up to 192 MHz clock frequency

Floating Point Unit (FPU)

Memory Protection Unit (MPU)



Security Features

Secure boot

Secure OTA and wired updates

Secure debug

Secure key storage

Hardware crypto accelerators


Ultra-Low Power Memory

Up to 2MB of non-volatile MRAM for code/data

Up to 1.8MB of low power RAM 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

3x 2/4/8-bit SPI master interfaces

8x I2C/SPI masters for peripheral communication

1x SPI slave for host communications

4x UART modules with flow control

1x USB 2.0 HS/FS device controller

1x SDIO (SD3.0)/1x eMMC (v4.51)


MIPI DSI 1.2 with 2 data lanes up to 500 Mbps

Up to 454 x 454 resolution

4 layers with alpha blending

Frame Buffer Decompression


2D/2.5D graphics accelerator

Full Alpha Blending

Texture and Frame Buffer Compression

Audio Processing

4x stereo Digital microphones

2x full-duplex I2S ports with ASRC

Rich Set of Clock Sources

32 MHz-32 kHz Crystals (XTAL) oscillators

1 kHz Low Frequency RC (LFRC) oscillator

2x High Frequency RC (HFRC) oscillator

Power Management

Operating range: 1.71-2.2 V, –20°C to 60°C

SIMO buck

Multiple I/O voltages supported


Smart watches/bands

Wireless sensors and IoT

Activity and fitness monitors

Children's watches

Animal trackers

Motion and tracking devices

Alarms and security system

Far-field voice remotes

Consumer medical devices

Predictive maintenance

Smart home

Package Options

5 mm x 5 mm, 146-pin BGA with 105 GPIO

Ordering Information


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