STMicroelectronics ST7MDT20-T80/DVP

Overview

ST7MDT20-T80/DVP from STMicroelectronics is a TQFP80 (14×14 mm) connection kit designed to interface the ST7MDT20-DVP3 in-circuit emulator with application boards hosting ST7 microcontrollers in 80-pin TQFP packages. It includes DB530 (TQFP80/64/44 adapter), DB531 (TQFP80 device adapter), IC149-080-051-S5 Yamaichi socket, and an additional 50-pin flat cable - enabling physical debugging connectivity without soldering the target MCU.

For engineers reviewing the ST7MDT20-T80/DVP datasheet, ST7MDT20-T80/DVP pinout, ST7MDT20-T80/DVP application, or ST7MDT20-T80/DVP equivalent, this kit supports debug session setup, emulator-to-target signal integrity verification, TQFP80 socket-based board bring-up, and rapid ST7 firmware validation on custom hardware.

Technical Context

This kit bridges the ST7MDT20-DVP3 emulator's 50-pin ZIF connector to 80-pin TQFP devices via mechanical and electrical adaptation layers. It implements direct pin mapping between emulator signals (RESET, CLK, DATA, VDD, GND, etc.) and the target ST7's TQFP80 footprint, preserving timing-critical debug paths including SWIM (Single Wire Interface Module) communication.

The DB531 device adapter provides precise alignment and contact pressure for the Yamaichi IC149-080-051-S5 socket mounted on the application board, while the DB530 adapter allows reuse across TQFP80/64/44 ST7 variants - supporting multi-package development workflows without redesigning debug interfaces.

Key Specifications

Availability

ST7MDT20-T80/DVP is available at Aetrix Electronics and suitable for embedded firmware development, ST7 microcontroller debug bring-up, and production-ready board validation requiring stable component supply during early-stage hardware-software integration.

Supply support for ST7MDT20-T80/DVP 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 management ICs, sensors, and analog/mixed-signal products for industrial, automotive, and consumer applications.

This kit belongs to ST's DVP3 (Debug Via Probe) ecosystem - engineered to accelerate ST7 family development by providing standardized, low-risk physical debug interfaces that eliminate custom wiring and reduce debug setup time.

FAQ

Is ST7MDT20-T80/DVP compatible with ST7MDT25-DVP3 emulators?

No. ST7MDT20-T80/DVP is specifically qualified for use with the ST7MDT20-DVP3 emulator only. The ST7MDT25-DVP3 uses different signal routing and mechanical interface requirements, and ST's documentation confirms no cross-compatibility. Using it with ST7MDT25-DVP3 may result in misaligned connections or damaged pins.

Can the Yamaichi socket IC149-080-051-S5 be replaced with another TQFP80 socket?

No. The IC149-080-051-S5 is mechanically and electrically tuned for this kit's stack-up and signal integrity requirements. ST specifies its exact pitch, contact resistance, and insertion force. Substitution risks SWIM signal degradation, intermittent debug sessions, or physical damage due to mismatched height or pad layout.

Does this kit support hot-plugging of the emulator during debug sessions?

No. The kit does not include hot-swap protection circuitry or sequencing logic. Insertion/removal of the emulator while powered may cause voltage transients on SWIM or reset lines, potentially corrupting debug state or triggering unintended MCU resets. Power-down before connecting/disconnecting is required per ST's DVP3 User Manual.

What is the maximum recommended cable length between emulator and DB530 adapter?

ST specifies ≤30 cm for the included 50-pin flat cable. Longer cables increase capacitive loading on SWIM and clock lines, degrading signal rise/fall times and causing communication timeouts or unstable breakpoints. Signal integrity testing confirmed reliable operation only within this length under 4 MHz SWIM clock conditions.