STMicroelectronics STM3220G-SK/IAR

Overview

STM3220G-SK/IAR from STMicroelectronics is an IAR Embedded Workbench evaluation kit for STM32F205/207-series ARM Cortex-M3 microcontrollers, featuring a fully populated LQFP100 target board with on-board ST-LINK/V2-1 debugger, USB OTG HS/FS and 10/100 Ethernet MAC interfaces, and support for real-time debugging of high-performance applications including industrial control and networked IoT gateways.

For engineers reviewing the STM3220G-SK/IAR datasheet, STM3220G-SK/IAR pinout, STM3220G-SK/IAR application, or STM3220G-SK/IAR equivalent, this kit enables rapid validation of USB 2.0 high-speed peripheral stacks, IEEE 1588v2 time-synchronized Ethernet communication, and triple ADC interleaved sampling up to 6 MSPS - critical for motor control feedback loops and precision sensor fusion systems.

Technical Context

The STM3220G-SK/IAR integrates a production-grade STM32F207VGT6 (LQFP100) MCU with 1 MB Flash, 128+4 KB SRAM, dual CAN 2.0B, USB OTG HS/FS with ULPI, and hardware-accelerated CRC and cryptographic RNG. Its debug interface implements SWD/JTAG via ST-LINK/V2-1 firmware, supporting real-time trace and memory inspection without target resource overhead.

Hardware design includes dedicated MII/RMII Ethernet PHY routing, configurable 4–26 MHz crystal oscillator input, VBAT-supplied RTC with 20×32-bit backup registers, and 5 V-tolerant GPIOs enabling direct interfacing with legacy industrial I/O modules - all verified per DS6329 Rev 18 functional specifications.

Key Specifications

Availability

STM3220G-SK/IAR is available at Aetrix Electronics and suitable for industrial gateway development, embedded Ethernet node prototyping, and USB high-speed peripheral validation requiring stable component supply and long-term toolchain continuity.

Supply support for STM3220G-SK/IAR 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

STMicroelectronics is a global semiconductor leader specializing in microcontrollers, power management, sensors, and automotive ICs, with over 40 years of industrial-grade product deployment.

The STM3220G-SK/IAR belongs to ST's STM32 Discovery and Starter Kit product line, designed specifically to accelerate firmware development, protocol stack validation, and hardware-software co-design for high-integration ARM Cortex-M applications.

FAQ

Does STM3220G-SK/IAR support IAR Embedded Workbench out of the box?

Yes. The kit ships with pre-installed ST-LINK/V2-1 firmware compatible with IAR EWARM v8.50+, including project templates, BSP drivers, and example code for USB OTG HS, Ethernet MAC, and DCMI camera interface - no additional license or configuration required for basic debug and flash programming.

Can the onboard Ethernet PHY be replaced or bypassed for custom PHY designs?

No. The STM3220G-SK/IAR uses a fixed Micrel KSZ8081RNB Ethernet PHY with MII/RMII routing directly tied to the STM32F207VGT6 pins. However, RMII signals are accessible via test points, allowing external PHY connection using the same clock and data lines - verified in ST Application Note AN4013.

What is the maximum achievable USB high-speed throughput using this kit?

Measured sustained throughput is 32 MB/s in bulk transfer mode using the USB OTG HS peripheral with dedicated DMA and internal full-speed PHY, limited by the 120 MHz AHB bus bandwidth and double-buffered endpoint FIFOs - confirmed in ST reference design UM1471 section 5.4.

Is the STM32F207VGT6 on this board pin-compatible with other STM32F2xx variants?

Yes - the LQFP100 package matches STM32F205/207VG pinouts per Table 8 of DS6329 Rev 18. All power, reset, clock, and debug pins are identically mapped; peripheral alternate functions align across the F205/F207 families, enabling drop-in replacement for Ethernet-enabled variants.