Texas Instruments TM4C129DNCPDTT3R

Overview

TM4C129DNCPDTT3R from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 120 MHz operation, 1 MB Flash, 256 KB SRAM, integrated Ethernet MAC+PHY, USB 2.0 OTG, and hardware crypto accelerators (AES/DES/SHA/MD5). It serves as a high-integration host controller in industrial gateways requiring real-time connectivity, secure firmware updates, and deterministic motion control.

For engineers reviewing the TM4C129DNCPDTT3R datasheet, TM4C129DNCPDTT3R pinout, TM4C129DNCPDTT3R application, or TM4C129DNCPDTT3R equivalent, key selection criteria include its integrated 10/100 Ethernet PHY, dual USB interfaces (host/device/OTG), hibernation module with RTC and tamper detection, and support for TivaWare™ C Series software stack.

Technical Context

The TM4C129DNCPDTT3R implements a full-featured ARM Cortex-M4F core with single-precision floating-point unit and 16-stage pipeline, enabling deterministic execution of motor control algorithms and protocol stacks. Its system-level integration includes a dedicated hibernation module with battery-backed RAM, real-time clock, and tamper-detection circuitry for secure low-power operation.

On-chip peripherals include a 10/100 Ethernet MAC with integrated PHY compliant to IEEE 802.3, USB 2.0 OTG with integrated PHY, four UARTs, two I²C modules, two SPI controllers, and a 12-bit 1-MSPS ADC with analog comparator. Memory subsystem supports ECC on SRAM and configurable wait states for Flash access at 120 MHz.

Key Specifications

Pinout & Package

Package: 128-pin LQFP (14 mm × 14 mm, 0.4 mm pitch), RoHS-compliant, operating temperature range –40°C to +105°C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with TM4C1294NCPDT and STM32H743VI, the TM4C129DNCPDTT3R uniquely combines integrated 10/100 Ethernet PHY, hardware crypto acceleration, and tamper-aware hibernation - reducing bill-of-materials count and simplifying certification for industrial IoT endpoints.

Availability

TM4C129DNCPDTT3R is available at Aetrix Electronics and suitable for industrial gateways, smart energy meters, motion control hubs, and building automation controllers requiring stable component supply across multi-year production cycles.

Supply support for TM4C129DNCPDTT3R 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

Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and consumer applications.

The TM4C129 series targets industrial IoT edge nodes requiring integrated connectivity, deterministic real-time performance, and hardware-enforced security - designed specifically for applications where Ethernet, USB, crypto, and ultra-low-power hibernation must coexist on a single chip.

FAQ

What is the maximum operating frequency of the TM4C129DNCPDTT3R?

The TM4C129DNCPDTT3R operates at a maximum CPU frequency of 120 MHz. This speed is sustained across the full industrial temperature range (–40°C to +105°C) with appropriate voltage supply and cooling. The TM4C129DNCPDTT3R achieves this using an optimized 16-stage pipeline Cortex-M4F core with branch prediction and instruction prefetch, enabling consistent real-time response for time-critical tasks like motor control loops and Ethernet packet processing.

Does the TM4C129DNCPDTT3R include an integrated Ethernet physical layer (PHY)?

Yes, the TM4C129DNCPDTT3R integrates a full IEEE 802.3-compliant 10/100 Ethernet PHY alongside the MAC. This eliminates the need for an external PHY IC and associated magnetics in many designs. The integrated PHY supports MII and RMII interfaces and includes auto-negotiation, link status reporting, and loopback modes - all accessible via the TM4C129DNCPDTT3R's register set without external configuration.

What cryptographic algorithms does the TM4C129DNCPDTT3R hardware accelerator support?

The TM4C129DNCPDTT3R hardware crypto engine supports AES-128/192/256 (ECB/CBC/CTR/GCM), DES/3DES (ECB/CBC), SHA-1/224/256, and MD5. These accelerators operate independently of the CPU and can process blocks in parallel with application code execution. For example, the TM4C129DNCPDTT3R can perform AES-GCM authentication and encryption of 128-bit blocks in under 100 µs, significantly accelerating TLS handshakes and secure firmware validation.

How does the hibernation module in the TM4C129DNCPDTT3R differ from standard low-power modes?

The TM4C129DNCPDTT3R hibernation module provides deeper power savings than standard sleep modes: it powers down the entire system except for a dedicated 2 KB battery-backed SRAM block, real-time clock, tamper-detection circuitry, and wake-up logic. Current draw drops below 2 µA, and the module retains time, state, and tamper history even when main VDD is removed - a capability not offered by standard STOP or DEEP-SLEEP modes in most MCUs.

Is the TM4C129DNCPDTT3R pin-compatible with other TM4C129 family members?

No, the TM4C129DNCPDTT3R is not pin-compatible with other TM4C129 variants such as TM4C1294NCPDT or TM4C1290NCPDT. While sharing the same 128-pin LQFP package outline, pin functions differ significantly - especially for Ethernet, USB, and hibernation signals. For example, TM4C129DNCPDTT3R dedicates pins to internal PHY I/O (e.g., ETH0_RXD0–ETH0_RXD3), whereas TM4C1294NCPDT repurposes those pins for general I/O or alternate peripherals.