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Ambiq Micros & RTCs combine high performance with ultra-low power consumption

Ultra-low power MCUs and RTCs

Ambiq Micro was founded in 2010 on the notion that extremely low power semiconductors are the key to the future of electronics.

Ambiq Micro developed a patented Subthreshold Power Optimized Technology (SPOT™) platform that dramatically reduces the amount of power consumed by semiconductors. 

Normal CMOS processes are working with an internal core voltage above the threshold voltage a transistor needs to make a logical low or high decision. Therefore most cores are working at 1.8V or 1.2V depending on the CMOS process.

By applying SPOT™ on a standard CMOS process, the internal core voltage can be minimized to 0.5V. While the energy consumption is proportional to the squared voltage, SPOT™ can reduce energy usage by up to 13 times!

SPOT platform voltage vs time

By applying SPOT, Ambiq produces the world’s lowest power real-time clock (RTC) and microcontroller (MCU), Apollo. Apollo achieves a score of 377 and smashes through EEMBC ULPBench ceiling, doubling the highest score on record.

Apollo smashes through EEMBC ULPBench ceiling

Through the use of its pioneering ultra-low power technology, Ambiq is helping innovative companies around the world to develop differentiated solutions that reduce or eliminate the need for batteries, lower overall system power, and maximize industrial design flexibility.

Following products are available:


See more information about Ambiq Micro RTCs

Part Number Interface Package Size (mm) SRAM
PowerManagement Trickle Charger
AM1805AQ I2C 16-Pin QFN 3x3 256 x x
AM1815AQ SPI 16-Pin QFN 3x3 256 x x
AM0805AQ I2C 16-Pin QFN 3x3 256    
AM0815AQ SPI 16-Pin QFN 3x3 256    


See more information about Ambiq Micro MCUs

Part Number Flash RAM Package Size
APOLLO512-KCR 512KB 64KB 41-pin WLCSP 2.49 x 2.90 mm
APOLLO512-KBR 512KB 64KB 64-pin BGA 4.50 x 4.50 mm
APOLLO256-KCR 256KB 32KB 41-pin WLCSP 2.49 x 2.90 mm
APOLLO256-KBR 256KB 32KB 64-pin BGA 4.50 x 4.50 mm

Ambiq Micro MCU Factsheet (732 KB)

Apollo1 Product Brief v5 (246 KB)