Microchip Technology TDGL025

Overview

TDGL025 from Digilent is a compact 40-pin DIP-form-factor development board built around the Microchip PIC32MX150F128D microcontroller, delivering a 32-bit MIPS core at 50 MHz, 128 KB flash, 32 KB SRAM, and 33 GPIOs - designed for rapid prototyping on breadboards and low-footprint embedded evaluation.

For engineers reviewing the TDGL025 datasheet, TDGL025 pinout, TDGL025 application, or TDGL025 equivalent, key selection considerations include its DIP-40 mechanical compatibility, dual Pmod interface support, MPLAB X IDE integration (with external debugger), and on-board 3.3 V regulation for direct breadboard use.

Technical Context

The TDGL025 implements the PIC32MX150F128D MCU with full peripheral access routed to its 40-pin DIP footprint, including two I²C, two SPI, two UART, and a 13-channel 10-bit ADC. All digital I/O operates at 3.3 V logic levels with internal pull-ups enabled on select pins.

Its two 12-pin Digilent Pmod connectors provide standardized 3.3 V I/O expansion, supporting UART, SPI, I²C, and GPIO-based peripheral modules without level-shifting. The board includes two user-controllable LEDs tied directly to PORTB pins RB0 and RB1.

Key Specifications

Availability

TDGL025 is available at Aetrix Electronics and suitable for embedded education, rapid proof-of-concept prototyping, and low-volume industrial controller evaluation requiring stable component supply and long-term toolchain continuity.

Supply support for TDGL025 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

Digilent is a U.S.-based provider of FPGA, microcontroller, and analog test & measurement tools focused on engineering education and rapid prototyping.

The chipKIT Platform - including TDGL025 - was developed to lower barriers to 32-bit embedded development using open-source tools and breadboard-friendly form factors.

FAQ

Does TDGL025 include an integrated debugger or programmer?

No, TDGL025 does not include an on-board debugger or programmer. It requires an external tool such as the Digilent chipKIT PGM (TDGL015) or Microchip PICkit™3 (PG164130) for programming and debugging via ICSP. The board exposes the necessary programming header pins but lacks embedded debug circuitry.

What IDEs are compatible with TDGL025?

TDGL025 supports both MPIDE (legacy chipKIT IDE) and Microchip's MPLAB® X IDE. When using MPLAB X, a compatible debugger like the PICkit 3 must be connected externally. No additional drivers or patches are required beyond standard Microchip toolchain installation for TDGL025 recognition.

Can TDGL025 operate from a USB port alone?

Yes, TDGL025 can be powered solely via its USB connection, which supplies regulated 3.3 V to the PIC32MX150F128D and all onboard peripherals. The USB interface is used only for power and serial communication - not for programming unless paired with a separate debugger.

What voltage levels do the I/O pins on TDGL025 support?

All I/O pins on TDGL025 operate at 3.3 V logic levels and are not 5 V tolerant. Direct connection to 5 V signals may damage the PIC32MX150F128D. Level-shifting is required when interfacing with legacy 5 V peripherals or sensors.

Are the two Pmod connectors on TDGL025 electrically identical?

No, the two Pmod connectors on TDGL025 are not electrically identical: one is dedicated to UART/SPI/I²C peripherals (Pmod JA), while the other (Pmod JB) routes additional GPIO and ADC-capable pins. Pin mappings differ per connector, and users must consult the official TDGL025 reference schematic to avoid signal conflicts.