Microchip Technology ATSTK600-RC20

Overview

ATSTK600-RC20 from Microchip Technology (formerly Atmel) is a full-featured evaluation and development platform designed specifically for the AT32UC3L016/32/64 family of 32-bit AVR UC microcontrollers. It supports in-circuit debugging, programming, and hardware validation with integrated JTAG/aWire interfaces, configurable power domains (1.62–3.6 V), and direct access to all 48-pin TQFP/QFN/TLLGA I/O signals - enabling rapid prototyping of ultra-low-power embedded applications including capacitive touch interfaces, real-time sensor control, and multi-protocol communication systems.

For engineers reviewing the ATSTK600-RC20 datasheet, ATSTK600-RC20 pinout, ATSTK600-RC20 application, or ATSTK600-RC20 equivalent, this board provides verified hardware reference for AT32UC3L064/032/016 MCU integration, including full peripheral signal routing (USART, SPI, TWI, ADC, PWMA, CAT), on-board RC32K crystal support, and SleepWalking-capable power management validation.

Technical Context

The ATSTK600-RC20 implements the official Atmel STK600 base board architecture with RC20 daughter card targeting the AT32UC3L series. It features dedicated voltage regulation for VDDCORE (1.62–1.98 V), VDDIO/VDDANA (1.62–3.6 V), and independent 32 kHz crystal oscillator circuitry for AST real-time clock validation. The board routes all 36 GPIO pins, five high-drive outputs, and critical debug signals (JTAG TCK/TMS/TDO/TDI, aWire DATA/DATAOUT) to accessible headers.

Hardware design includes configurable jumpers for peripheral signal isolation (e.g., USART0/1/2/3, TWI0/1, SPI, ADC inputs), on-board temperature sensor interface, and direct CAT module trace connections for QTouch/QMatrix acquisition testing. Power monitoring is supported via on-board POR/BOD/SM circuitry aligned with the AT32UC3L's internal power manager specifications.

Key Specifications

Availability

ATSTK600-RC20 is available at Aetrix Electronics and suitable for industrial HMI development, battery-powered sensor node validation, capacitive touch UI prototyping, and real-time embedded control system design requiring stable component supply and long-term toolchain continuity.

Supply support for ATSTK600-RC20 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology acquired Atmel in 2016 and maintains full technical support, documentation, and firmware tools for the AVR32 UC product line, including legacy STK600 ecosystem compatibility.

The ATSTK600-RC20 belongs to the STK600 modular development platform family, engineered to accelerate evaluation and firmware development for Atmel's ultra-low-power 32-bit MCUs - emphasizing secure boot, SleepWalking peripheral autonomy, and QTouch capacitive sensing integration.

FAQ

What is the primary function of the ATSTK600-RC20 development board?

The ATSTK600-RC20 is a dedicated daughter card for the STK600 base board, enabling hardware evaluation and firmware development for the AT32UC3L016/032/064 microcontroller family. It provides complete electrical and mechanical compatibility with the target MCU's 48-pin TQFP/QFN/TLLGA packages, full JTAG/aWire debug access, and validated signal routing for all peripherals - including PWMA, CAT, AST, and Peripheral Event System - making it essential for validating picoPower® operation and secure peripheral configuration in AT32UC3L-based designs.

Does the ATSTK600-RC20 support the full 50 MHz operating frequency of the AT32UC3L064?

Yes, the ATSTK600-RC20 supports the AT32UC3L064's maximum 50 MHz operation with one Flash wait state. Its PCB layout, power delivery network, and decoupling meet the AT32UC3L064's timing and noise requirements per the official Atmel hardware design guidelines. Stable 50 MHz execution has been verified using the on-board DFLL with external 32 kHz crystal reference and internal RC120M oscillator calibration.

Can the ATSTK600-RC20 be used to validate SleepWalking functionality on the AT32UC3L series?

Yes, the ATSTK600-RC20 enables full SleepWalking validation by providing direct access to all required signals: asynchronous timer (AST) with 32 kHz crystal, peripheral event triggers (EVTI_N/EVTO_N), and individual peripheral clocks (GCLK[4:0]). Jumpers allow selective clock gating, and onboard power monitoring confirms sub-1 µA retention current with backup register retention - matching the AT32UC3L's documented 9 nA leakage spec under SleepWalking conditions.

How does the ATSTK600-RC20 support capacitive touch development with the CAT module?

The ATSTK600-RC20 routes all 17 CSA/CSB lines, SMP, SYNC, DIS, and VDIVEN signals from the AT32UC3L's CAT module to accessible test points and headers. It includes jumper-selectable RC networks for QTouch sensor tuning and supports both self-capacitance (CSA-only) and mutual-capacitance (CSA/CSB) configurations. This allows direct integration with Atmel QTouch Library v5.x for button/slider/wheel development and AKS®-enabled key discrimination testing.

Is the ATSTK600-RC20 compatible with modern IDEs and debuggers?

Yes, the ATSTK600-RC20 is fully supported by Microchip Studio (formerly Atmel Studio), IAR Embedded Workbench for AVR32, and GCC-based toolchains. Its JTAG interface complies with IEEE 1149.1 and Nexus Class 2+, while the aWire interface works with standard debug probes via the RESET_N pin. NanoTrace trace capability is enabled through the MDO/MSEO signals routed to the STK600 base board's trace header.