STMicroelectronics NUCLEO-8S207K8

Overview

NUCLEO-8S207K8 from STMicroelectronics is an STM8 Nucleo-32 development board centered on the STM8S207K8T6C 8-bit microcontroller in LQFP32 package, featuring integrated ST-LINK/V2-1 debugger/programmer, ARDUINO® Nano V3 expansion support, four user-accessible LEDs (LD1–LD4), and flexible power options (3.3 V, 5 V, 7–12 V or USB VBUS). It enables rapid prototyping of embedded control applications with preloaded demo firmware and comprehensive STM8 peripheral libraries.

For engineers reviewing the NUCLEO-8S207K8 datasheet, NUCLEO-8S207K8 pinout, NUCLEO-8S207K8 application, or NUCLEO-8S207K8 equivalent, this board serves as a production-ready evaluation platform for STM8S207-based designs requiring SWIM-based debugging, low-cost MCU validation, shield-expandable I/O, and IDE-agnostic toolchain support (STVD, IAR-EWSTM8, Cosmic IDEA).

Technical Context

The NUCLEO-8S207K8 implements a full-featured STM8S207K8T6C target MCU with 64 KB Flash, 6 KB RAM, and 1 KB EEPROM, operating at up to 24 MHz. Its on-board ST-LINK/V2-1 provides SWIM interface access, USB re-enumeration (mass storage, Virtual COM port, debug port), and no external probe requirement.

Power architecture supports dual sourcing: USB VBUS from Micro-B connector or external DC (3.3 V, 5 V, or 7–12 V) via dedicated header. The ARDUINO® Nano V3 pin-compatible expansion connector exposes GPIO, UART, SPI, I²C, and ADC signals from the STM8S207K8 for shield integration.

Key Specifications

Availability

NUCLEO-8S207K8 is available at Aetrix Electronics and suitable for industrial sensor node validation, educational MCU labs, low-power control prototyping, and STM8 migration assessments requiring stable component supply and long-term toolchain compatibility.

Supply support for NUCLEO-8S207K8 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 headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, analog ICs, power devices, and sensors for industrial, automotive, and consumer applications.

The NUCLEO-8S207K8 belongs to ST's STM8 Nucleo-32 evaluation platform family, engineered to accelerate adoption of STM8S Series MCUs through standardized form factor, open-pin-access expansion, and zero-cost toolchain integration.

FAQ

Does the NUCLEO-8S207K8 require an external debugger?

No. It integrates the ST-LINK/V2-1 debugger/programmer with SWIM interface, supporting programming, real-time debugging, virtual COM port, and mass storage functions over a single Micro-B USB connection-no external probe needed.

Which IDEs are officially supported for the NUCLEO-8S207K8?

Officially supported IDEs include ST's free STVD-STM8 (with Cosmic toolchain), IAR Embedded Workbench for STM8 (IAR-EWSTM8), and Cosmic's free IDEA. All are validated against the STM8S207K8T6C peripheral library and demonstration examples.

Can the NUCLEO-8S207K8 be powered from an external 12 V source?

Yes. The board accepts 7–12 V DC input via the VIN pin when solder bridge SB1 is closed. Internal regulation delivers stable 3.3 V to the STM8S207K8 and peripherals, with thermal protection active under sustained load.

Is the ARDUINO® Nano connector electrically compatible with STM8S207K8 I/O voltage levels?

Yes. The expansion header maps directly to STM8S207K8 GPIO pins operating at 3.3 V logic levels. All digital and analog signals (including UART TX/RX, SPI, I²C, and ADC inputs) comply with 3.3 V tolerant specifications per STM8S207K8 datasheet Section 5.2.