ATSAMG55-XPRO - SAM G55 ARM Cortex-M4 Xplained Pro Kit | Microchip
MPN: ATSAMG55-XPRO β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $56.51 | $56.51 |
| 10 | $51.78 | $517.80 |
| 25 | $48.32 | $1,208.00 |
| 50 | $44.1 | $2,205.00 |
| 100 | $40.25 | $4,025.00 |
ATSAMG55-XPRO Overview
A Xplained Pro evaluation kit is a complete, ready-to-run embedded development board built around a specific microcontroller. It typically integrates the target MCU, a power-supply section fed from USB or an external source, user-interface elements such as buttons and LEDs, a debugging interface, and standardized extension-header pins. Xplained Pro boards are designed to accept click-board and Xplained Pro extension boards, letting engineers prototype peripheral functionality without designing custom PCBs. The platform also runs Microchip's Atmel Studio / Microchip Studio IDE for code development, programming and debugging.
The ATSAMG55-XPRO features a SAM G55 ARM Cortex-M4 processor running at up to 120 MHz with DSP extensions and single-precision FPU, supported by an on-board 32.768 kHz crystal for accurate low-power real-time-clock operation. The board provides two Xplained Pro extension headers, a mikroBUS socket for click boards, mechanical user buttons, LEDs, and a USB interface powered by the EDBG. Firmware development is supported through Microchip Studio / Atmel Studio and ASF (Atmel Software Framework).
Typical applications include audio processing and DSP algorithm prototyping, low-power IoT sensor nodes, motor-control and predictive-maintenance firmware development, and general-purpose Cortex-M4 software bring-up. The Cortex-M4 with FPU accelerates signal-processing math, while the SAM G55 family supports low-power sleep modes suited to battery-powered designs.
When designing with this kit, remember it is an evaluation/prototyping platform, not a production-ready module. Production designs should migrate validated firmware onto a custom PCB using the bare ATSAMG55J19B MCU, retaining the same ASF HAL drivers for code reuse.
This page synthesizes distributor pricing snapshots, drop-in alternative evaluation kits from the same Xplained Pro family, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for ATSAMG55-XPRO β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ATSAMG55-XPRO (same form factor and footprint) β differing in Core Architecture, Product Type, Package, RoHS Status, Mounting Type.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATSAMG55J19B-MUT
β Drop-Inβ In Stock
$5.74 / Unit
View Datasheet βATSAMG55J19B-AUT
β Drop-Inβ In Stock
$5.42 / Unit
View Datasheet βATSAMG55J19A-AU
β Drop-Inβ In Stock
$3.99 / Unit
View Datasheet βATSAMG53N19A-AU
β Drop-Inβ In Stock
$1.05 / Unit
View Datasheet βATSAMDA1-XPRO
β Drop-Inβ In Stock
$72 / Unit
View Datasheet βATSAMG55-XPRO Specifications (manufacturer-published)
| Product Type | Evaluation / Development Kit (Xplained Pro) |
| Target MCU | ATSAMG55J19B (SAM G55, ARM Cortex-M4 with FPU) |
| Core Architecture | ARM 32-bit Cortex-M4 with single-precision FPU and DSP extensions |
| Maximum CPU Clock | 120 MHz |
| Low-frequency Crystal | 32.768 kHz |
| Supported OS (IDE) | Windows 7 / Windows XP (Atmel Studio / Microchip Studio) |
| On-board Debugger | EDBG (USB interface, programming + debug) |
| Extension Headers | 2x Xplained Pro extension headers + mikroBUS socket |
| User Interface | Mechanical buttons, user LEDs |
| Power Input | USB (powered via EDBG) and external connector |
| Form Factor | Xplained Pro standard PCB |
| Mounting Type | Through-hole male header pins (extension), surface-mount PCB |
| RoHS Status | Compliant (per Microchip product page) |
| Family | SAM G55 Xplained Pro |
| Toolchain Support | Microchip Studio / Atmel Studio, ASF, GCC ARM |
ATSAMG55-XPRO Interfaces & Connectors
ATSAMG55-XPRO exposes the following interfaces and connectors as published by the manufacturer: Power Input. Expansion header pinout, connector pin numbering, and electrical limits are defined in the manufacturer documentation.
| Power Input | USB (powered via EDBG) and external connector |
Refer to the manufacturer documentation for the full expansion header pinout and connector pin numbering.
Power & Thermal Characteristics
| Power Input | USB (powered via EDBG) and external connector |
Power input and thermal parameters for ATSAMG55-XPRO as published by the manufacturer.
Typical Applications
ATSAMG55-XPRO is suitable for 6 applications: Low-Power Audio DSP Prototyping, IoT Sensor Node Bring-Up, Motor Control and Predictive Maintenance, Industrial HMI Prototyping, USB Device and HID Development, Audio Effects Pedal and Synth Prototyping.
Low-Power Audio DSP Prototyping
The ATSAMG55-XPRO is ideal for low-power audio DSP prototyping. Its ATSAMG55J19 Cortex-M4 core with single-precision FPU and DSP extensions executes audio codecs (MP3, AAC, Opus), filter banks and equalizers efficiently while drawing microamp-level sleep current between bursts. Engineers plug a mikroBUS audio click board or PDM microphone Xplained Pro extension into the on-board headers and run ASF audio examples directly in Microchip Studio, profiling power vs. audible quality on the bench. The 32.768 kHz crystal enables accurate RTC-based playback scheduling. Compared with a full ATSAMD51-XPRO kit, the SAM G55 trades raw MHz headroom for markedly lower active current, which is the key parameter for always-on or battery-powered audio designs.
Recommended
IoT Sensor Node Bring-Up
Use the ATSAMG55-XPRO as an IoT sensor node reference design. The Xplained Pro headers accept any mikroBUS or Xplained Pro sensor board (temperature, humidity, IMU, gas), letting engineers prove out firmware on a known-good PCB before committing to a custom layout. The ATSAMG55J19's Cortex-M4 + FPU handles on-node sensor fusion and edge analytics, while the deep-sleep current of the SAM G55 family lets the design wake, sense, transmit via a wireless click board, and return to sleep with multi-year battery life projections. The kit's EDBG streams real-time current draw through Data Visualizer, which is invaluable for tuning sleep modes before production spin.
Recommended
Motor Control and Predictive Maintenance
The ATSAMG55-XPRO is well suited to motor-control and predictive-maintenance prototyping. Its Cortex-M4 DSP extensions accelerate field-oriented control (FOC) math, while the FPU enables floating-point current and torque loops without integer scaling tricks. Engineers combine the kit with a motor-control extension board or external inverter to spin BLDC and PMSM motors, tuning PID gains against the EDBG's real-time watch windows. For predictive-maintenance workloads, on-board ADC sampling of vibration or current signals feeds FFT and RMS routines that run natively on the M4. Compared to an 8-bit PIC16F reference, the ATSAM G55 shrinks control-loop latency by roughly an order of magnitude.
Recommended
Industrial HMI Prototyping
The ATSAMG55-XPRO serves as a robust platform for industrial HMI prototyping, where engineers combine the kit with an OLED or TFT Xplained Pro extension to drive displays and the mechanical buttons to handle user input. The Cortex-M4 with FPU renders anti-aliased fonts and simple graphics smoothly, while the SAM G55's industrial temperature rating supports factory-floor deployments. Fieldbus prototyping via mikroBUS click boards (RS-485, CAN, Ethernet) lets engineers prove out communication stacks against real industrial sensors. The kit's USB-powered EDBG simplifies bench testing across multiple vendors and protocols before committing to a custom HMI PCB.
Recommended
USB Device and HID Development
The ATSAMG55-XPRO's on-board USB PHY and EDBG make it a convenient platform for USB device and HID prototyping. The ATSAMG55J19's USB 2.0 Full-Speed peripheral plus the kit's USB-C / USB-Micro connector enable direct enumeration against a host PC, while Microchip Studio's USB stack and ASF examples cover HID, CDC, MSD, and vendor-class devices out of the box. Engineers debug enumeration failures and descriptor issues in real time over EDBG without an external probe. The 120 MHz Cortex-M4 has enough headroom for composite USB devices (HID + CDC + vendor) running concurrently.
Recommended
Audio Effects Pedal and Synth Prototyping
Audio engineers use the ATSAMG55-XPRO as a Cortex-M4 effects-pedal and synthesizer prototyping platform. The kit drives a mikroBUS audio codec click board (e.g., SGTL5000) and runs guitar-effect algorithms (overdrive, chorus, delay, reverb) or wavetable synthesis on the Cortex-M4 with FPU. The 32.768 kHz crystal enables stable MIDI clocking, while the kit's low-power modes support battery-powered pedal designs. Compared to a DSP-specialized kit, the SAM G55 trades raw DSP throughput for a general-purpose microcontroller with deep-sleep current suitable for stompbox-style products.
Recommended
Recommended Products Summary
Engineering reference data for ATSAMG55-XPRO β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAMG55J19B-MUT | ATSAMG55J19B-AUT | ATSAMG55J19A-AU | ATSAMG53N19A-AU | ATSAMDA1-XPRO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package / Form Factor | Xplained Pro PCB kit (ATSAMG55J19B-MU on-board) | Bare MCU in QFN (used on the kit) | Bare MCU in LQFP, automotive grade | Bare MCU in LQFP, revision A | Xplained Pro PCB kit (SAM G53) | Xplained Pro PCB kit (SAM DA1) |
| Target MCU Core | ARM Cortex-M4 with FPU + DSP | ARM Cortex-M4 with FPU + DSP | ARM Cortex-M4 with FPU + DSP | ARM Cortex-M4 with FPU + DSP | ARM Cortex-M4 (no FPU) | ARM Cortex-M0+ |
| Maximum CPU Clock | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 48 MHz | 48 MHz |
| On-board Debugger | Yes (EDBG over USB) | N/A (bare MCU) | N/A (bare MCU) | N/A (bare MCU) | Yes (EDBG over USB) | Yes (EDBG over USB) |
| Extension Headers | 2x Xplained Pro + mikroBUS | N/A (bare MCU) | N/A (bare MCU) | N/A (bare MCU) | 2x Xplained Pro + mikroBUS | 2x Xplained Pro + mikroBUS |
| Toolchain Support | Microchip Studio / Atmel Studio / ASF | Same as kit (same MCU) | Same as kit (same MCU) | Same as kit (same MCU) | Microchip Studio / Atmel Studio / ASF | Microchip Studio / Atmel Studio / ASF |
| Primary Use Case | Low-power DSP and audio prototyping | Custom PCB production migration of this kit | Automotive-grade production migration | Legacy / cost-driven production migration | Lower-cost Cortex-M4 prototyping (no FPU) | Ultra-low-power Cortex-M0+ prototyping |
Key Differentiators
- Lowest-power Cortex-M4 with FPU in the SAM family (vs ATSAMD51-XPRO (higher-end M4F kit))
- Cortex-M4 with FPU (where SAM G53 lacks FPU) (vs ATSAMG53N19A-AU (SAM G53, no FPU))
- Mature Xplained Pro ecosystem with EDBG out of the box (vs Bare ATSAMG55J19B-MUT (no debugger))
Design Notes
The ATSAMG55-XPRO is an evaluation board, not a production-ready module: it exposes the ATSAMG55J19B-MU MCU on male headers plus the EDBG USB debugger. Production designs should migrate validated firmware onto a custom PCB using the bare ATSAMG55J19B-MUT (or -AUT automotive variant) and replicate the decoupling/bulk capacitor layout from the kit reference design. Do not assume the kit's EDBG is part of the production BOM.
Power the ATSAMG55-XPRO from the USB interface whenever possible: the on-board regulator feeds both the ATSAMG55J19B MCU and the EDBG, eliminating the need for an external supply. When measuring ultra-low sleep current, disconnect the EDBG USB or use the kit's external power jumper so the debugger's quiescent draw does not skew your results. Refer to the Microchip Studio Data Visualizer for accurate current profiling via the kit's current shunt.
The two Xplained Pro extension headers and the mikroBUS socket carry the ATSAMG55J19B's I/O to standard 0.1-inch pin footprints. Keep your extension board's signal traces short (especially for SPI, I2S and PDM audio) and add 100 nF + 10 uF decoupling close to the click board's power pins. The kit's reference design in the user guide shows the recommended stack-up and copper-pour pattern; copy it verbatim when designing a daughter board.
Compliance Information
RoHS and REACH compliance per Microchip product page. The kit itself is not AEC-Q100 qualified; for automotive designs migrate to the ATSAMG55J19B-AUT automotive-grade MCU variant on a custom PCB.