STMicroelectronics ST7MDT20-T44/DVP

Overview

ST7MDT20-T44/DVP from STMicroelectronics is a TQFP44 (10×10 mm) connection kit designed to interface the ST7MDT20-DVP3 in-circuit emulator with target application boards hosting ST7 microcontrollers in TQFP44 packages. It includes DB530 (TQFP80/64/44 adapter), DB544 (TQFP44 device adapter), IC149-044-052-S5 Yamaichi socket, and requires one 50-pin flat cable for full setup. Used during firmware debug and hardware validation of ST7-based embedded control systems.

For engineers reviewing the ST7MDT20-T44/DVP datasheet, ST7MDT20-T44/DVP pinout, ST7MDT20-T44/DVP application, or ST7MDT20-T44/DVP equivalent, this kit enables reliable, repeatable physical connection between DVP3 emulator and TQFP44-target boards-critical for trace-based debugging, real-time register inspection, and flash programming verification in industrial motor control and appliance MCU development.

Technical Context

The ST7MDT20-T44/DVP implements a passive mechanical and electrical bridging solution-not an active electronic component. It maps all 44 pins of the TQFP44 ST7 MCU footprint to the 50-pin DVP3 emulator interface via two stacked adapters (DB530 + DB544) and a soldered socket. Signal integrity is maintained through controlled-length parallel traces and gold-plated contacts rated for ≥500 mating cycles.

No voltage translation, buffering, or protocol conversion occurs. Pin mapping follows ST's documented DVP3-to-TQFP44 signal assignment: VDD/VSS, reset, clock, SWIM debug, and I/O pins are routed 1:1 without inversion or multiplexing. The IC149-044-052-S5 socket provides zero-insertion-force (ZIF)-like reliability on PCBs while supporting both emulator attachment and final ST7 chip insertion.

Key Specifications

Availability

ST7MDT20-T44/DVP is available at Aetrix Electronics and suitable for industrial motor control debugging, white-goods MCU validation, and ST7-based appliance firmware development requiring stable component supply for legacy toolchain continuity.

Supply support for ST7MDT20-T44/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, specializing in microcontrollers, power management, sensors, and automotive ICs.

This kit belongs to the ST7 DVP3 emulator accessory product line, engineered specifically to extend debug visibility into ST7-based designs using standardized, low-risk mechanical interfaces-enabling rapid bring-up without custom probe design.

FAQ

Is ST7MDT20-T44/DVP compatible with ST7MC series microcontrollers?

Yes - ST7MC devices in TQFP44 (10×10 mm) package are supported, as confirmed by ST's DVP3 Probe User Guide and pin compatibility matrix. The kit routes SWIM, reset, clock, and power signals identically across ST7 core derivatives, provided the target uses standard ST7 TQFP44 pinout (not custom variants).

Does this kit include the 50-pin flat cable?

No - the ST7MDT20-T44/DVP kit explicitly excludes the 50-pin flat cable, as stated in the Data Brief: "One additional 50-pin flat cable required for connection between emulator and the adapter." Users must procure a compatible 50-conductor, 0.025" pitch IDC cable separately.

Can the IC149-044-052-S5 socket be reused after emulator removal?

Yes - the Yamaichi IC149-044-052-S5 socket is rated for ≥500 mating cycles and designed for permanent PCB mounting. After emulator debugging, the same socket accepts the final ST7 MCU, eliminating rework and preserving board-level signal integrity.

Is ST7MDT20-T44/DVP RoHS compliant?

Per STMicroelectronics' 2005 Product Change Notification (PCN) archive and material declarations, ST7MDT20-T44/DVP was manufactured to RoHS-compliant specifications prior to obsolescence, with lead-free terminations on all adapters and socket contacts.