STMicroelectronics STEVAL-PCC010V1

Overview

STEVAL-PCC010V1 from STMicroelectronics is an evaluation kit implementing a full-speed USB-to-RS232 bridge using the ST72F65 microcontroller, enabling serial port expansion on USB-equipped PCs without proprietary drivers. It supports baud rates up to 256 kbps, half-duplex RS232 communication, and 7/8-bit data with configurable parity.

For engineers reviewing the STEVAL-PCC010V1 datasheet, STEVAL-PCC010V1 pinout, STEVAL-PCC010V1 application, or STEVAL-PCC010V1 equivalent, this board provides verified USB-to-serial bridging functionality, in-circuit reprogramming via ICC, and GPIO access for custom peripheral integration - critical for embedded interface prototyping and legacy serial device modernization.

Technical Context

The board integrates the ST72F65 (TQFP64) as the core USB microcontroller, paired with the ST3222 transceiver (TSSOP20) for RS232 level shifting. USB connectivity uses standard D+ and D− lines with 12 MHz crystal (Y2) and supporting 22 pF load capacitors (C19/C20).

RS232 interface is implemented via DB9 male connector (P1), with TX/RX routed through ST3222's R1OUT/T1IN pins. Eight general-purpose I/O pins are exposed via 2×5 header J5, and eight additional GPIOs are accessible via 1×8 headers J4 and J7 - all mapped directly to ST72F65 port pins including PA0–PA7, PB0–PB7, and PC0–PC7.

Key Specifications

Availability

STEVAL-PCC010V1 is available at Aetrix Electronics and suitable for industrial serial gateway development, legacy equipment interface modernization, and embedded USB host prototyping requiring stable component supply and documented reference design validation.

Supply support for STEVAL-PCC010V1 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, designing and manufacturing microcontrollers, analog ICs, power devices, and sensors for industrial, automotive, and consumer applications.

The STEVAL evaluation kit series targets rapid hardware validation and firmware development for ST's microcontroller-based interface solutions - specifically enabling USB, RS232, CAN, and sensor subsystem integration with minimal external components.

FAQ

Does STEVAL-PCC010V1 require a custom USB driver on Windows?

No. The board implements CDC ACM (Communication Device Class Abstract Control Model) using the ST72F65's built-in USB stack, allowing plug-and-play operation with native Windows usbser.sys or Linux cdc_acm drivers. No INF file editing or third-party software installation is needed for basic serial communication.

Can the ST72F65 firmware be modified and reloaded?

Yes. The ICC header (J3) provides dedicated ICCCLK and ICCDATA lines for in-circuit programming using ST's STVP or STSW-ICD01 tools. User firmware compiled with COSMIC or STVD can be flashed directly without removing the MCU from the board.

What RS232 voltage levels does the board generate?

The ST3222 transceiver delivers true RS232 voltage levels: ±5.5 V to ±15 V output swing, compliant with TIA/EIA-232-F. It accepts TTL-level inputs from the ST72F65 and drives standard DB9 connectors with full signal integrity over 15 m cable runs at 9600 bps.

Are the GPIO pins 5 V tolerant?

No. All GPIO pins are connected directly to the ST72F65's I/O ports, which operate at 3.3 V and are not 5 V tolerant. Applying voltages above Vdd + 0.3 V (i.e., >3.6 V) may damage the MCU. External level-shifting circuitry is required for interfacing with 5 V logic systems.