Intro 01 Features 02 Specifications 03 Documents 04 Buy 04

Apollo4 Plus 01

Ambiq^® introduces the latest addition to the Apollo4 SoC family, the fourth generation of SPOT-enabled SoCs. Built on a rich architecture, the Apollo4 Plus brings enhanced graphics performance and additional on-chip memory. With a built-in graphics processing unit (GPU) and a high performing display driver, Apollo4 Plus enables designers of next generation wearables and smart devices to deliver even more stunning user interface (UI) effects and overall user experience in a safer environment to take their innovative products to the next level. Moreover, designers can securely develop and deploy products confidently with our secureSPOT^® technology and PSA-L1 certification.

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Deliver stunning user interface effects and overall user experience

Block Diagram for the Ultra-Low Power Apollo4 Plus SoC

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With up to 2MB of MRAM and 2.75MB of SRAM, the Apollo4 Plus has more than enough compute power 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 high-bandwidth multi-bit SPI and eMMC interfaces.

The Apollo4 Plus 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.

Feature Highlights 02

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 vector 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 ultra-low power analog microphone and 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.

Specifications

Specifications 03

Ultra-Low Supply Current
4 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)

Apollo4 Plus
AMAP42KP-KBR

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Apollo4 Plus<br>Evaluation Board<br>AMAP4PEVB

Apollo4 Plus
Evaluation Board
AMAP4PEVB

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Apollo4 Plus<br>Display Kit<br>AMAP4PDISP

Apollo4 Plus
Display Kit
AMAP4PDISP

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Apollo4 Plus
AMAP42KP-KBR

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Apollo4 Plus
Evaluation Board
AMAP4PEVB

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Apollo4 Plus
Display Kit
AMAP4PDISP

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Security Features
Secure boot
Secure over-the-air (OTA) updates
Secure wired updates
Key Revocation

Ultra-Low Power Memory
Up to 2MB of non-volatile MRAM for code/data
Up to 2.75MB 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
2x 2/4/8-bit SPI master interfaces
2/4/8/16-bit SPI master interface
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)

Display
MIPI DSI 1.2 with 2 data lanes up to 500 Mbps
Up to 500 x 500 resolution
4 layers with alpha blending
Frame Buffer Decompression

Graphics
2D/2.5D graphics accelerator
Full Alpha Blending
Texture and Frame Buffer Compression
Anti-Aliasing
Dithering
Vector Graphics

Audio Processing
1x stereo Low Power Analog microphones
4x stereo Digital microphones
2x full-duplex I²S ports with ASRC

Rich Set of Clock Sources
16-52 MHz and 32.768 kHz Crystals (XTAL) oscillators
1 kHz Low Frequency RC (LFRC) oscillator
2x High Frequency RC (HFRC) oscillator

Power Management
Operating voltage range: 1.71 V - 2.2 V
Operating temperature range: -20°C to +60°C
SIMO buck
Multiple I/O voltages supported

Applications
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