Apollo 2 is the latest addition in the ultra-low power Apollo microcontroller family. This highly integrated MCU reduces power consumption by more than 50% compared to the first generation Apollo MCU, therefore empowering users with more processing capability with an even lower power budget. Apollo 2 opens door for enhanced applications performing complex context detection, gesture recognition, and activity monitoring with longer battery life in wearable electronics, activity & fitness monitors, IoT devices, and wireless sensors. All Apollo series MCUs take full advantage of Ambiq Micro’s patented Subthreshold Power Optimized Technology (SPOT) Platform, setting a new industry benchmark in low power design.
Specifications and Features
Ultra-low supply current:
- <10 μA/MHz executing from flash at 3.3 V
- <10 μA/MHz executing from RAM at 3.3 V
High-performance ARM Cortex-M4F Processor:
- Up to 48 MHz clock frequency
- Floating point unit
- Memory protection unit
- Wake-up interrupt controller with 32 interrupts
Ultra-low power memory:
- Up to 1 MB of flash memory for code/data
- Up to 256 KB of low leakage RAM for code/data
- 16kB 2-way Associative Cache
Ultra-low power interface for off-chip sensors:
- 14 bit, 15-channel, up to 1.2 MS/s ADC
- Temperature sensor with +/-3ºC accuracy
- Voltage Comparator
Flexible serial peripherals:
- 6x I2C/SPI master for communication with sensors, radios, and other peripherals
- 1x I2C/SPI slave for host communications
- 2x UART for communication with peripherals and legacy devices
- PDM for mono and stereo audio microphones
Rich set of clock sources:
- 32.768 kHz XTAL oscillator
- Low frequency RC oscillator – 1.024 kHz
- High frequency RC oscillator – 48 MHz
- RTC based on Ambiq’s AM08X5/18X5 families
Compact package options:
- 2.5 x 2.5 mm (0.35mm) 49-pin CSP with 34 GPIO
- 4.5 x 4.5 mm (0.5mm) 64-pin BGA with 50 GPIO
Applications
- Wearable electronics
- Wireless sensors
- Activity and fitness monitors
- Consumer electronics
- Consumer medical devices
- Smart watches
