Intro 01 Features 02 Specifications 03 Documents 04 Buy 04

Apollo3 01

The Apollo3 SoC is an ultra-low power, highly integrated microcontroller platform based on the Ambiq^® patented Subthreshold Power Optimized Technology (SPOT^®) and designed for battery-powered and portable, mobile devices.

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Block Diagram for the Ultra-Low Power Apollo3 SoC

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More Information

The Apollo3 SoC sets a new standard in energy efficiency for battery powered devices with an integrated Arm^® Cortex^®-M4 processor with Floating Point Unit and turboSPOT^® increasing the computational capabilities of the Arm Cortex-M4F core to 96 MHz while lowering the active power consumption to < 6 μA/MHz. This combination dramatically reduces energy consumption while still enabling abundant application processing power to add greater capability and extended life to battery operated devices.

The Apollo3 SoC is the 3^rd generation controller building upon Ambiq’s Apollo SoC product line. The Apollo3 SoC integrates up to 1MB of flash memory and 384KB of RAM to accommodate radio and sensor overhead while still leaving plenty of space for application code and algorithms. In addition to flexible serial channels for radio and sensor communication, this system on a chip also includes dual Pulse-Density Modulation (PDM) inputs for applications that require digital microphones for near and mid-field always-on keyword detection, voice assistant integration, and voice control.

Feature Highlights 02

Ideal Solution

An ideal solution for battery-powered applications requiring sensor measurement and data analysis.

ADC with Analog and Digital Outputs

Can measure analog sensor outputs using an integrated ultra-low power 14-bit ADC and digital sensor outputs using the integrated serial master ports.

Multiple Serial Protocol Support

A host processor can communicate with the Apollo3 SoC over its serial slave port using the I²C, SPI or I²S protocol.

Extended Battery Life

Enables months and years of battery life for products only achieving days or months of battery life today.

Greater Performance

Implementation of the Cortex-M4F core delivers both greater performance and much lower power than 8-bit, 16-bit, and other comparable 32-bit cores.

Uniquely Tuned ADC

ADC is uniquely tuned for minimum power with a configurable measurement mode that does not require SoC intervention.

Software Tool Suite

Supported by a complete suite of standard software development tools.

Specifications

Specifications 03

Ultra-Low Power Supply
6 μA/MHz executing from flash or RAM at 3.3 V
1 μA deep sleep mode with RTC at 3.3 V

High-Performance Arm Cortex-M4 Processor
Up to 48 MHz nominal clock frequency with 96 MHz performance
Floating Point Unit (FPU)
Memory Protection Unit (MPU)
Wake-up interrupt controller with 32 interrupts

Apollo3 WLCSP
AMAP31KK-KCR

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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
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

Applications
Headsets, Earphones, Wireless Earbuds
Mobile Accessories
Hearing Aids
Always-Listening, Voice-Activated Appliances
Portable Voice Assistants
Remote Controls
Smart Cards
Fingerprint Readers
Wearable electronics including smart watches
Smart meters
Wireless sensors
Activity and fitness monitors
Consumer electronics