STMicroelectronics ST7232X-SK/RAIS

Overview

ST7232X-SK/RAIS from Raisonance is a complete, low-cost starter kit for ST72321B and ST72325 8-bit microcontrollers (ST7 family), featuring the REva motherboard with embedded RLink debugger/programmer, USB-powered operation, LQFP64 daughterboard support, and Ride7 IDE with C compiler and SIMICE simulator - used for rapid firmware development and hardware evaluation in industrial control and sensor interface applications.

For engineers reviewing the ST7232X-SK/RAIS datasheet, ST7232X-SK/RAIS pinout, ST7232X-SK/RAIS application, or ST7232X-SK/RAIS equivalent, this page provides verified hardware architecture, supported MCU variants, REva board I/O capabilities, software toolchain integration, and supply-chain readiness for prototyping and small-volume production.

Technical Context

The ST7232X-SK/RAIS integrates the REva universal evaluation platform with interchangeable daughterboards hosting ST72F321BAR9 or ST72F325AR9 MCUs in LQFP64 packages, enabling full in-circuit debugging via SWIM/ICC protocols and programming through USB-connected RLink. It supports multiple VDD settings (1.8 V, 3.3 V, 5 V) and includes on-board analog peripherals (temperature sensor, potentiometer, external analog connector) and digital interfaces (I²C EEPROM, RS-232 with DB9 connectors).

Hardware evaluation is accelerated by the REva motherboard's SO-DIMM connector for daughterboard expansion, prototype area, LED/button/switch I/O, and clock source selection jumper with oscillator footprint - all powered solely via USB without external supplies. The kit ships with Ride7 IDE, including RBuilder peripheral configuration GUI, CodeCompressor optimization, and RFlasher7 mass-programming mode.

Key Specifications

Availability

ST7232X-SK/RAIS is available at Aetrix Electronics and suitable for industrial control prototyping, sensor node development, educational MCU labs, and embedded firmware validation requiring stable component supply and full toolchain integration.

Supply support for ST7232X-SK/RAIS 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

Raisonance is a French embedded tools developer specializing in MCU evaluation platforms, debuggers, and integrated development environments for STMicroelectronics, Silicon Labs, and other semiconductor vendors.

This kit belongs to the REva product line - designed as a modular, cost-effective evaluation system for rapid application development across ST7 and STM8 families using interchangeable daughterboards and unified software tooling.

FAQ

Does ST7232X-SK/RAIS support in-circuit debugging for both ST72F321BAR9 and ST72F325AR9?

Yes - the embedded RLink uses the ICC protocol to provide full in-circuit debugging and programming for both ST72F321BAR9 and ST72F325AR9 MCUs on the included daughterboard. Debugging is performed via USB connection to a host PC running Ride7 IDE, with real-time register/memory inspection and breakpoint control.

What voltage levels can be applied to the target MCU on the ST7232X-SK/RAIS daughterboard?

The REva motherboard supports three selectable VDD supply voltages: 1.8 V, 3.3 V, and 5 V - configured via onboard jumpers. This allows functional validation of ST72F321BAR9 and ST72F325AR9 across their rated operating ranges, including low-voltage sensor interface and legacy 5 V system compatibility testing.

Is external power required to operate the ST7232X-SK/RAIS kit?

No - the entire ST7232X-SK/RAIS system, including the REva motherboard and daughterboard, is powered exclusively via the USB connection to the host PC. No external power supply or battery is needed, simplifying lab setup and field evaluation.

Which software tools are bundled with the ST7232X-SK/RAIS starter kit?

The kit includes Ride7 IDE (with editor, project manager, STM8/ST7 C compiler up to 2 KB, SIMICE instruction-set simulator, and RBuilder peripheral configuration GUI) and RFlasher7 for standalone device programming. CodeCompressor is also provided for post-link code size optimization (5–15% reduction).