Ambiq Apollo4 Lite System-on-Chip

Ambiq Apollo4 Lite System-on-Chip offers feature-rich capabilities and optimizes memory and peripherals, providing the Apollo4 family with a lightweight solution. The Apollo4 Lite is conveniently pin-compatible to its superset variant, Apollo4 Plus. It offers users the optimum flexibility to innovate with smooth, vibrant graphics in next-generation wearables and smart IoT devices. The Apollo4 Lite SoC is based on Ambiq’s proprietary Subthreshold Power-Optimized Technology (SPOT®) platform.

The Ambiq Apollo4 Lite is a complete hardware and software solution that enables battery-powered endpoint devices to achieve a higher level of intelligence without surrendering battery life. The Apollo4 Lite contains a 32-bit Arm® Cortex®-M4 core with a Floating Point Unit embedded in a BGA package.

With 2MB of MRAM and 1.4MB of SRAM, the Apollo4 Lite has optimal computing and storage to process complex algorithms and neural networks while displaying vibrant, crystal-clear, and smooth graphics. External memory is supported through Ambiq’s high bandwidth multi-bit SPI and eMMC interfaces if additional memory is required.

The Apollo4 Lite is purpose-built to serve as an application processor and a co-processor for battery-powered endpoint devices, including smartwatches, fitness bands, animal trackers, voice-activated remotes, digital health products, industrial maintenance, and smart home IoT devices.

Features

Ultra-low supply current
- 4µA/MHz executing from MRAM (with cache)
- Low-power sleep and deep sleep modes with selectable levels of RAM/cache retention
High-performance Arm® Cortex®-M4 processor with FPU
- Up to 192MHz clock frequency
- Memory Protection Unit (MPU)
- Secure boot
- PSA-L1 certified
Ultra-low power memory
- Up to 2MB of non-volatile MRAM for code/data
- Up to 1.4MB of low-power RAM for code/data
Ultra-low power interface for on- and off-chip sensors
- 12-bit ADC, 11x selectable input channels
- Up to 2.8MS/s sampling rate
- Temperature sensor with ±3°C accuracy
Ultra-low power flexible serial peripherals
- 2x 2/4/8-bit SPI master interface
- 1x 2/4/8/16-bit SPI master interface
- 8x I²C/MSPI for peripheral communication
- 1x SPI Slave for host communications
- 4x UART modules with flow control
- 1x SDIO (SD3.0)/1x eMMC (v4.51)

Display
- Up to 500 x 500 resolution
- Texture and frame buffer compression
Graphics
- 2D/2.5D graphics accelerator
- Texture and frame buffer compression
- Dithering and hardware anti-aliasing
Audio processing
- 1x stereo digital microphone
- 1x full-duplex I²S port
Rich set of clock sources
- 16MHz to 52MHz and 32.768kHz crystal (XTAL) oscillators
- 1kHz Low-frequency RC (LFRC) oscillator
- 2x High-frequency RC (HFRC) oscillator of 192MHz/384MHz
Power management
- Operating range of 1.71V to 2.2V, –20°C to +60°C
- SIMO buck
- Multiple I/O voltages supported
5mm x 5mm, 146-pin BGA package with 84x GPIOs

Applications

Smartwatches/bands
Wireless sensors and IoT
Activity and fitness monitors
Children’s watches
Digital health devices
Animal trackers

Motion and tracking devices
Alarms and security system
Far-field voice remotes
Predictive maintenance
Smart home

Ambiq Apollo4 Lite System-on-Chip

Features

Applications

Block Diagram

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