Apollo3 Blue MCU Datasheet
Ultra-Low Power Apollo MCU Family
DS-A3-0p11p0 Page 2 of 915 2020 Ambiq Micro, Inc.
All rights reserved.
Ambiq Micro
Apollo3
MCU
Host
Processor
(optional)
SPI/I
2
C
Slave
Port
SPI/I
2
C Master,
UART
GPS / WiFi
Magnetometer
with Digital
Output
Gyroscope
with Digital
Output
Accelerometer
with Digital
Output
Typical Application Circuit for the Apollo3 MCU
External Flash
Multi-bit
SPI
Display
Features
Ultra-low supply current:
- 6 µA/MHz executing from FLASH or RAM at 3.3 V
- 1 µA deep sleep mode (BLE Off) with RTC at 3.3 V (BLE in
SD)
High-performance ARM Cortex-M4 Processor
- 48 MHz nominal clock frequency, with 96 MHz high perfor-
mance TurboSPOT™ Mode
- Floating point unit
- Memory protection unit
- Wake-up interrupt controller with 32 interrupts
Integrated Bluetooth
1
5 low-energy module
- RF sensitivity: -93 dBm (typical)
- TX: 3 mA @ 0 dBm, RX: 3 mA
- Tx peak output power: 4.0 dBm (max)
Ultra-low power memory:
- Up to 1 MB of flash memory for code/data
- Up to 384 KB of low leakage RAM for code/data
- 16 kB 2-way Associative/Direct-Mapped Cache
Ultra-low power interface for on- and off-chip sensors:
- 14 bit ADC at up to 1.2 MS/s, 15 selectable input channels
available
- Voltage Comparator
- Temperature sensor with +/- 3ºC accuracy after calibration
ISO7816 Secure interface
Flexible serial peripherals:
- 1x 2/4/8-bit SPI master interface (MSPI)
- 6x I
2
C/SPI masters for peripheral communication
- I
2
C/SPI slave for host communications
- 2x UART modules with 32-location Tx and Rx FIFOs
- PDM for mono and stereo audio microphone
- 1x I
2
S slave for PDM audio pass-through
Rich set of clock sources:
- 32.768 kHz XTAL oscillator
- Low frequency RC oscillator – 1.024 kHz
- High frequency RC oscillator – 48/96 MHz
- RTC based on Ambiq’s AM08X5/18X5 families
Wide operating range: 1.755-3.63 V, –40 to 85°C
Compact package:
1. The Bluetooth® word mark and logos are registered trademarks
owned by the Bluetooth SIG, Inc. and any use of such marks is under
license. Other trademarks and trade names are those of their respec-
tive owners.
- 3.37 x 3.25 mm(<0.35mm thk pkg) 66-pin CSP with 37 GPIO
- 5 x 5 mm (<0.5mm thk pkg) 81-pin BGA with 50 GPIO
Applications
Description
The Apollo MCU Family is an ultra-low power, highly integrated
microcontroller platform based on Ambiq Micro’s patented Sub-
threshold Power Optimized Technology (SPOT™) and designed
for battery-powered and portable, mobile devices. The Apollo3
Blue MCU 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 compu-
tational capabilities of the ARM Cortex M4F core to 96MHz while
lowering the active power consumption to <6uA/MHz. This combi-
nation dramatically reduces energy consumption while still
enabling abundant application processing power to add greater
capability and extended life to battery operated devices.
The Apollo3 Blue brings several new features to Ambiq’s SPOT-
based Apollo MCU Family including an integrated DMA engine,
QSPI interface, and advanced stepper motor control for ultra-low
power analog watch hand management. With unprecedented
energy efficiency and PDM microphone inputs, the Apollo3 Blue
also forms the core of Ambiq’s Voice-on-SPOT™ reference
platform making it the perfect device for customers who want to
add always-on voice assistant integration and command
recognition to battery-powered devices. To increase design
flexibility and enable connections to the phone and cloud, the
Apollo3 Blue provides a dedicated second core for the ultra-low
power BLE5 connectivity platform providing superior RF
throughput and leaving plenty of resources available for user
applications.
▪ Voice-on-SPOT™ compatible for always-listening keyword
detect, audio command recognition and voice assistant integra-
tion in battery-powered devices including:
- Bluetooth headsets, earbuds, and truly wireless earbuds
- Remote and Gaming Controls
- Smart home
▪ Wearables including smart watches and fitness/activity trackers
▪ Hearing aids, Digital Health Monitoring and Sensing Devices
▪ Smart Home Automation, Security and Lighting control applica-
tions
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