Conclusive Engineering KSTR-SAMA5D27 is an ultra-compact (70x50mm) single board computer (SBC) featuring a Microchip SAMA5D27 Arm Cortex-A5 processor running at 500 MHz with 256MB LPDDR2 (system-in-package).
The board includes a microSD card slot and EEPROM for storage/configuration, Fast Ethernet, WiFi 4, and Bluetooth 4.1 connectivity, a USB-C port, two GPIO headers, and supports USB and battery power. It is designed for IoT devices, smart systems, and edge computing applications.
Conclusive Engineering KSTR-SAMA5D27 specifications:
– SiP: Microchip SAMA5D27
– CPU: Arm Cortex-A5 microprocessor @ 500 MHz
– System Memory: 256 MB LPDDR2
– Storage:
– MicroSD card slot
– 4KB EEPROM
– Networking:
– 10/100Mbps Ethernet RJ45 jack
– 2.4 GHz WLAN IEEE 802.11 b/g/n and Bluetooth 4.1
– USB:
– 1x USB 2.0 OTG Type-C connector
– 1x USB 2.0 Host on expansion header
– Expansion:
– 34-pin and 30-pin connectors
– 2x Flexcom (configurable: I2C, SPI, UART)
– I2C
– 6-channel ADC with Vref
– 10-bit ISC (Image Sensor Controller), 10-bit and 12-bit sensors support
– 4-channel PWM
– Timer I/O
– CAN Bus
– USB
– PDMIC audio input
– Console UART
– 3.3 V, 2.5 V, 1.8 V, 5.0 V, and VBAT power supply pins
– Qwiic connector
– Debug:
– Console debug UART on the expansion header
– Conclusive Developer Cable connector
– System UART
– JTAG port
– System I2C bus (EEPROM programming)
– Security:
– Arm TrustZone
– Secure Boot
– Hardware encryption engine
– Memory Integrity Monitor
– Misc:
– Reset button
– 3x status LEDs – Power Indicator, System Heartbeat, user programmable
– Real-time clock (RTC) on MPU
– Battery backup (CR1220) for RTC and static RAM
– VDDIO voltage switch pins (3.3 V or 1.8 V selection)
– Power Management:
– 5V DC via USB Type-C port
– External Li-Ion battery with charging, charge level, and temperature monitoring support via 3-pin connector and solder pads.
– Consumption (SoC)
– Less than 200 μA low power state with fast wake-up
– 5 μA backup mode
– Dimensions: 70 x 50 mm
Conclusive Engineering provides support for Linux 6.1 & 6.5, U-Boot, the Yocto Project, Buildroot, and Ubuntu, with FreeBSD support available on request. Documentation for getting started can be found on the wiki with links to OS images and source code.
The SAMA5D2 family was first launched in 2018, and most related boards and modules were introduced from 2019 to 2021, including the Jupiter Nano, the tiny HaneSOM system-on-module, Arrow Shield96, and the misnamed “Giant” board with Adafruit Feather form factor. Though the chip itself is around 8 years old, the KSTR-SAMA5D27 is relatively new, with samples available in the company’s online store since last year.
Samples of the Microchip SAMA5D27 SBC are available for purchase at $119 (+ VAT) on the Conclusive store. Additional information is available on the product page.
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