kestrel logo




Extremely small form factor Single Board Computer.
Based on Microchip ATSAMA5D27 SoC.
Featuring Arm® Cortex®-A5 500 MHz.

Visit our store


Extremely small form factor
Single Board Computer

  • 500 MHz single core ARM MPU
  • 256 MB RAM
  • Extremely small form factor
  • Built-in battery management
  • Long off-grid operation
  • Arm® TrustZone®
  • Stackable GPIO headers
  • Ethernet, Wi-Fi, Bluetooth, USB-C

All in one SBC, smaller than a credit card

Rich feature set with efficient power consumption. Ideal for secure node computing and IoT solutions. Advanced security with hardware cryptographic acceleration and on-chip RAM. Protects your code and data at all times.

Operates directly from a Li-Ion or Li-Poly battery

Provides charging and temperature monitoring of the cell. Capable of several low-power states to ensure long off-grid operation.

Kestrel Single Board Computer with an aerial attached, upper side angle view
Close-up view of KSTR-SPARX Single Board Computer with a mounted battery

High-level OS features to build an universal network gateway

10/100 Mbit/s Ethernet, 54 Mbit/s Wi-Fi b/g/n, Bluetooth 4.1 LE, Stackable GPIO headers.

KSTR-SAMA5D27 KESTREL - Specification

SoC Microchip SAMA5D27, 1 core ARM® Cortex-A5® 500 MHz 32-Bit CPU
SoC Features
  • ARM TrustZone
  • Secure Boot
  • Hardware encryption engine
  • Memory Integrity Monitor
  • Real-time clock on-die
  • > 200 μA low power state with fast wake up
  • 5 μA backup mode
Memory 256 MB LPDDR2
  • 10/100 Mbps Ethernet (RJ45)
Wireless connectivity
  • 2.4 GHz WLAN IEEE 802.11 b/g/n
  • Bluetooth 4.1
Mass storage
  • SD card slot
  • 1x USB 2.0 OTG (USB-C)
  • 1x USB 2.0 Host (on expansion header)
  • Conclusive Developer Cable connector providing access to:
  • System UART
  • JTAG port
  • System I2C bus
Software support
  • U-Boot
  • Linux 4.14-5.6 (Buildroot and Yocto)
  • FreeBSD 13 (on request)
Additional features
  • 3 status LEDs - Power Indicator, System Heartbeat, user programmable
  • RTC clock with CR1220 battery upkeep
  • VDDIO voltage switch pins (3.3 V or 1.8 V selection)
  • Reset switch
  • 34 and 30 pin connectors with the following interfaces:
  • 3.3 V, 2.5 V, 1.8 V, 5.0 V and VBAT power supply pins
  • 2x Flexcom (configurable: I2C, SPI, UART)
  • I2C
  • 6 channel ADC with Vref
  • 10-bits ISC (Image Sensor Controller), 10-Bit and 12-Bit sensors support
  • 4-channel PWM
  • Timer I/O
  • CAN
  • USB
  • PDMIC audio input
Power supply
  • USB-C connector (Power Delivery support)
  • External Li-Ion battery with charging, charge level and temperature monitoring support. 3 pin connector and solder pads.
Dimensions 50x70 mm
Kestrel Single Board Computer alongside its original packaging

Kestrel is applicable for

  • Secure IoT with physical tamper protection
  • Intelligent Factory
  • Machine Control
  • Wireless Meshes
  • Smart Grid
  • Human Habitat Automation
  • Handheld Devices and Human Interfaces
  • Network Gateways

Order your board

Found something you like? Browse our off the shelf products in our store. Looking for something more specific, like additional board features or fully custom products? Contact us!

Visit our store Inquiry about custom board

Check our other products


Industrial SoM with edge AI and dual display support


Compact System on Module based on Microchip PolarFire® SoC FPGA


High performance Single Board Computer with extensive connectivity features


High performance small footprint L2/L3 Ethernet solderable switch SoM.