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    bg desktop chipApollo4 Blue kv desktop 1 1 scaled

    Apollo4 Blue

    Brilliantly Connected Devices

    Apollo4 Blue kv mobile 1 1

    The Apollo4 Blue SoC powers brilliantly connected devices with ultra-low power, stunning graphics, and industry-leading security for next-gen applications that range from wearables to digital health. Built on an Arm® Cortex®-M4 processor running up to 192MHz with Ambiq’s turboSPOT® technology, it pairs a 2.5D GPU for vibrant vector graphics with Bluetooth® Low Energy 5.1 connectivity, secure boot, and MRAM/SRAM memory — enabling smartwatches, fitness trackers, smart home devices, and industrial IoT sensors to run longer on a single charge.

    Design Resources
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    Features

    Press Releases

    01

    Multipurpose SoC

    The Apollo4 Blue can serve as either an applications processor or a coprocessor for battery-powered edge devices.

    02

    Power for the Next Big Thing

    Ample processing power for upcoming big ideas at up to 192MHz, thanks to the Arm® Cortex®-M 4 and turboSPOT®.

    03

    Inspiring Graphics

    The Apollo4 Blue features a high-performance 2.5D GPU with full alpha blending for vector graphics, delivering vibrant, smooth, and inspiring visuals.

    04

    Redefining connected Tech

    The Apollo4 Blue uses Bluetooth® Low Energy 5.1 to redefine connected applications, including wearables, smart homes, digital health, industrial edge, and more.

    Block Diagram Apollo4 Blue

    Block Diagram for the Ultra Low Power Apollo4 Blue SoC

    Specifications

    Ultra-Low Supply Current

    • 5µA/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

    • Up to192 MHz clock frequency
    • Floating Point Unit (FPU)
    • Memory Protection Unit (MPU)

    Bluetooth® Low Energy 5.1

    • 2Mbps, extended advertising packets
    • Angle of Arrival (AOA) and Angle of Departure (AOD)
    • Tx: Up to +6 dBm output power
    • Rx Sensitivity: -95 dBm

    Security Features

    • Secure Boot
    • Secure over-the-air (OTA) updates
    • Secure wired updates
    • Key revocation

    Ultra-Low Power Memory

    • Up to 2MB of non-volatile MRAM for code/data
    • Up to 1.8MB of low-power SRAM for code/data

    Ultra-Low Power Interface for On- and Off-Chip Sensors

    • Ultra-Low Power Interface for On- and Off-Chip Sensors
    • Up to 2.8 MS/s sampling rate
    • Temperature sensor with ±3°C accuracy

    Ultra-Low Power Flexible Serial Peripherals

    • 2x 2/4/8-bit SPI master interfaces
    • 7x I2C/SPI masters for peripheral communication
    • 1x SPI slave for host communications
    • 4x UART modules with flow control
    • 1x USB 2.0 HS/FS device controller
    • 1x SDIO (SD3.0)/1x eMMC (v4.51)

    Display

    • MIPI DSI 1.2 up to 500 Mbps
    • Up to 454 x 454 resolution
    • 4 layers with alpha blending
    • Frame Buffer Decompression

    Graphics

    • 2D/2.5D graphics accelerator
    • Full Alpha Blending
    • Texture and Frame Buffer Compression

    Audio Processing

    • 1x stereo Low Power Analog microphones
    • 4x stereo Digital microphones
    • 2x full-duplex I2S ports with ASRC

    Rich Set of Clock Sources

    • 16-52 MHz and 32.768 kHz Crystal (XTAL) oscillators
    • 1 kHz Low Frequency RC (LFRC) oscillator
    • 2x High Frequency RC (HFRC) oscillator

    Power Management

    • Operating range:1.71-2.2 V, –20°C to 60°C
    • SIMO buck
    • Multiple I/O voltages supported

    Applications

    • Smartwatches/bands
    • Wireless sensors and IoT
    • Activity and fitness monitors
    • Children’s watches
    • Animal trackers
    • Motion and tracking devices
    • Alarms and security system
    • Far-field voice remotes
    • Consumer medical devices
    • Predictive maintenance
    • Smart home

    Package Options

    • 4.7mm x 4.7mm, 131-pin SIP BGA

    Ordering Information

    • AMA4B2KK-KBR-B2

    Design Resources

    Additional Documentation

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    Frequently Asked Questions (FAQ)

    • The Apollo4 Blue is an ultra-low-power system-on-chip (SoC) designed for battery-powered, connected edgedevices. It combines an Arm® Cortex®-M4 processor operating at up to 192 MHz, Bluetooth® Low Energy 5.1 connectivity, and a 2D/2.5D graphics accelerator. It can serve as either an application processor or coprocessor.

    • The Apollo4 Blue features an Arm® Cortex®-M4 processor operating at up to 192 MHz with a floating-point unit (FPU) and Memory Protection Unit (MPU). Ambiq’s turboSPOT® technology provides high processing performance while supporting ultra-low-power operation.

    • The Apollo4 Blue supports Bluetooth® Low Energy 5.1 with 2 Mbps operation, extended advertising packets, Angle of Arrival (AoA) and Angle of Departure (AoD), up to +6 dBm transmit power, and -95 dBm receiver sensitivity.

    • Ambiq’s turboSPOT® technology enables the Apollo4 Blue to deliver processing performance up to 192 MHz while maintaining ultra-low-power operation. The SoC consumes 5 µA/MHz when executing from MRAM with cache, helping battery-powered endpoint devices balance performance and energy consumption.

    • The Apollo4 Blue includes Secure Boot, secure over-the-air (OTA) updates, secure wired updates, and key revocation to help protect firmware and connected endpoint devices.

    • The Apollo4 Blue features a 2D/2.5D graphics accelerator with full alpha blending and texture and frame buffer compression. It supports MIPI DSI 1.2 at up to 500 Mbps, display resolutions up to 454 × 454 pixels, four layers with alpha blending, and frame buffer decompression.

    • The Apollo4 Blue provides up to 2 MB of non-volatile MRAM for code and data and up to 1.8 MB of low-power SRAM for code and data.

    • The Apollo4 Blue is designed for smartwatches and fitness bands, wireless sensors and IoT devices, activity and fitness monitors, children’s watches, animal trackers, motion and tracking devices, alarms and security systems, far-field voice remotes, consumer medical devices, predictive maintenance, and smart home applications.

    • Apollo4 Blue, Apollo4 Blue Plus, and Apollo4 Blue Lite all use Arm® Cortex®-M4 processors with performance up to 192 MHz, but they differ in connectivity, memory, graphics, and other features. Apollo4 Blue supports Bluetooth® Low Energy 5.1 and up to 1.8 MB SRAM, while Apollo4 Blue Plus and Apollo4 Blue Lite support Bluetooth® Low Energy 5.4. Blue Plus provides up to 2.75 MB of low-power RAM, while Blue Lite provides up to 1.4 MB of low-power SRAM.

    • The Apollo4 Blue is available in a compact 4.7 × 4.7 mm, 131-pin SiP BGA package. The ordering part number is AMA4B2KK-KBR-B2. 

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