Ambiq Micro’s Apollo 2 sub-threshold-tech MCU – in distribution

January 18, 2017 // By Graham Prophet
Distribution company Fujitsu Electronics Europe (FEEU) has Ambiq Micro’s Apollo 2 Platform for the European market. The new ultra-low-power MCU claims ‘breakthrough’ power consumption of around 10 µA/MHz, allowing wearables and IoT devices to double battery life. General availability is planned for the second half of 2017.

Ambiq Micro’s technology uses sub-threshold switching – distinguishing binary values at voltages below what, in conventional CMOS, would be the transistor’s on-state. Ambiq says its platform’s low processing power consumption and large memory size give designers the ability to develop products at power levels that would otherwise be out or reach. The second-generation Apollo 2’s complete set of peripherals includes:

- High-precision 14-bit analogue-to-digital converters (ADC)

- Digital microphone interface with pulse density modulation (PDM) for voice applications

- Voltage comparator

- Temperature sensor

- I ²C/SPI for communication with sensors, radios, co-processor and other peripherals

- UART for communication with peripherals and legacy devices

- Integrated high efficient buck-converters


Ambiq Micro Apollo 2 Wearables and IoT Platform with ARM Cortex M4F Core

Effective active current


Effective performance

48 MHz

Flash/RAM size



I2C, SPI, 14-bit ADC, PDM

Package Options

64-pin, 4.5 x 4.5mm BGA with 50 GPIO

49-pin, 2.5 x 2.5mm WLCSP with 34 GPIO


FEEU aims to offer more than technical support for Ambiq Micro products, but will also identify opportunities to apply other technologies such as the Ferroelectric Random Access Memory (FRAM) products it carries, as well as foundry and packaging services that support near-threshold and sub-threshold applications.


Fujitsu Electronics Europe (FEEU);