STMicroelectronics STEVAL-CDE001V1

Overview

STEVAL-CDE001V1 from STMicroelectronics is an obsolete evaluation board implementing an embedded web server using the ST72F321M9 microcontroller, featuring a -55 °C to +150 °C temperature sensor (LM135Z), 10BASE-T Ethernet interface via RTL8019AS, 2×16 character LCD display, and 1 Mbyte serial Flash for webpage storage.

For engineers reviewing the STEVAL-CDE001V1 datasheet, STEVAL-CDE001V1 pinout, STEVAL-CDE001V1 application, or STEVAL-CDE001V1 equivalent, this board supports rapid prototyping of centralized temperature monitoring systems with web-based visualization, SCI debugging, ICC programming, and remote industrial sensor node deployment.

Technical Context

The board integrates the ST72F321M9 - a 16-bit ST7 core MCU with 64 KB Flash, 2 KB RAM, and multiple I/O ports - configured to run a lightweight TCP/IP stack and serve static HTML pages stored in external M95010-WMN6TP serial EEPROM and ME45PE80-VMP6TG serial Flash.

Temperature sensing uses the LM135Z analog voltage-output sensor interfaced to the MCU's ADC channel, while Ethernet connectivity relies on the RTL8019AS NE2000-compatible controller operating at 10 Mbps with RJ-45 magnetics and LED status indicators; all peripherals are powered by a KF33BD-TR 3.3 V regulator from a 5 V input.

Key Specifications

Availability

STEVAL-CDE001V1 is available at Aetrix Electronics and suitable for industrial HVAC monitoring, hospital environmental telemetry, remote sensor gateway validation, and embedded web server education requiring stable component supply despite its obsolete status.

Supply support for STEVAL-CDE001V1 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, power ICs, sensors, and analog/mixed-signal devices for industrial, automotive, and consumer applications.

This board belongs to ST's STEVAL evaluation platform family, engineered to accelerate development of networked embedded systems using ST's legacy ST7 microcontroller architecture and peripheral ecosystem.

FAQ

What microcontroller is used on the STEVAL-CDE001V1?

The board uses the ST72F321M9T6 - a 16-bit ST7-core microcontroller with 64 KB Flash, 2 KB RAM, and integrated peripherals including UART, SPI, and ADC. It operates at up to 16 MHz and serves as the central processing unit for temperature acquisition, web serving, and LCD control.

Does the board support modern Ethernet standards like 100BASE-TX?

No. The STEVAL-CDE001V1 implements only 10BASE-T Ethernet via the RTL8019AS controller, which is NE2000-compatible and limited to 10 Mbps half-duplex operation. It lacks hardware support for auto-negotiation, full-duplex mode, or Fast Ethernet physical layer compliance.

Can the onboard temperature sensor be replaced with a digital alternative?

Yes - the LM135Z analog sensor connects to PA0 (ADC channel 0); the schematic shows accessible test points and routing that allow substitution with a digital sensor (e.g., DS18B20 via 1-Wire on PB0), provided firmware is updated to handle the new protocol and calibration.

Is source code or firmware available for the embedded web server?

ST provided reference firmware and application notes (e.g., AN2716) for the STEVAL-CDE001V1, including TCP/IP stack implementation, HTTP server logic, and webpage generation routines. These materials were distributed with the board but are no longer hosted on st.com due to obsolescence.