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SR Series High-Performance AI MCUs

Product Overview

The Synaptics Astra™ SR100 Series of AI MCUs is designed to deliver high-performance, AI-Native, multimodal compute to consumer, enterprise, and industrial Internet of Things (IoT) workloads. Based on Arm® Cortex®-M55 cores with Helium™ technology and Arm Ethos™-U55 neural network processors (NPU), the MCUs feature multiple tiers of operation—performance, efficiency, low-power sensing, and always-on (AON)—that algorithmically deliver intelligence at every power level, to enable a new class of context-aware IoT devices. The AI-Native SR100 series supports a rich set of peripherals and accelerators, including dual MIPI camera interfaces, image processing with encode and pre-roll, motion and voice activity detection engines, and industrystandard security. These features make it well-suited for streaming vision and audio processing applications at the IoT device edge.

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HIGH-PERFORMANCE AI COMPUTE

INTELLIGENT GEARING

MULTI-LEVEL INFERENCING

STREAMING VIDEO & AUDIO

INDUSTRY STANDARD SECURITY

Processing & Performance

Performance domain: Arm Cortex-M55 @ 400MHz + Arm Ethos U55 NPU
Efficiency domain: Arm Cortex-M4 @ 100MHz + Synaptics NPU engine

Memory & Storage

Up to 3008 kB system memory + 630 kB ULP memory for image and audio storage
Retention available on 1448 kB of system memory (LP) and ULP memory
16 kB of AON memory

Interfaces & Connectivity

MIPI-CSI camera inputs and output
Digital camera input support
Audio interfaces
USB 2.0 HS (480 Mb/s)
Up to 43 general-purpose 1.8V inputs/outputs (GPIOs)

Security Features

Secure OTP
TRNG, AES-256, RSA-4096, SHA-512

Power Management

Powered from 3.3V & 1.8V external sources or from a single 3.0 - 3.6V battery supply
Battery voltage monitor
Power-enable pin powers up the device from complete power down and can be controlled from an external GPIO or button
AON power island that stays on during low-power mode, with wake-up functions supported through external GPIO interrupts and timer events
Low-power modes: active (sub-100 mW), low-power (sub-10 mW), ULP AON mode (sub100 uW), and power-down mode

Imaging & Signal Processing

ISP and Vision pipeline

Packaging Options

Available in WLCSP and BGA packages

Energy-efficient single-chip IoT Edge AI solution
Arm-based RTOS model with LiteRT
Pre-integrated & build-your-own models for all AI deployment stages
Programmable vision, audio pipelines
I/O interfaces for multiple cameras, digital mics

Battery-operated security cameras
Industrial control systems
AI-enhanced smart home appliances
Wearables, fitness monitors, privacy sensors

Introducing Astra™ Machina Micro

The Synaptics Astra Machina Micro dev kit enables rapid prototyping for the Synaptics SR100 Series of high-performance, context-aware, multimodal AI MCUs. The dev kit brings interfaces and IO ranging from qSPI for storage, M.2 for connectivity, digital mics for voice processing, and MIPI-CSI for multiple camera inputs. The SR100 series of MCUs - including SR110, SR105, and SR102 deliver AI-accelerated performance at all power levels in combination with ultra low-power multimodal sensing.

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