Texas Instruments TM4C129ENCPDTT3

Overview

TM4C129ENCPDTT3 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 TM4C129ENCPDTT3 datasheet, TM4C129ENCPDTT3 pinout, TM4C129ENCPDTT3 application, or TM4C129ENCPDTT3 equivalent, key selection criteria include Ethernet PHY integration, on-chip crypto acceleration, hibernation mode current (1.7 µA), EPI interface for external memory expansion, and TivaWare™ software support for rapid development.

Technical Context

The TM4C129ENCPDTT3 implements a full-featured ARM Cortex-M4F core with single-precision FPU, memory protection unit (MPU), and NVIC supporting 84 interrupt lines. Its system-level integration includes a dedicated 10/100 Ethernet MAC with integrated PHY, USB 2.0 OTG controller with internal transceiver, and a 32-channel µDMA controller with scatter-gather support.

Hardware security is enabled via dedicated AES-128/256, DES/3DES, and SHA/MD5 accelerators operating independently of the CPU. Power management includes multiple low-power modes-hibernation (1.7 µA), deep-sleep (10 µA), and sleep-with RTC, battery-backed memory, and tamper detection for secure edge node deployment.

Key Specifications

Pinout & Package

TM4C129ENCPDTT3 is housed in a 128-pin LQFP package (14 mm × 14 mm, 0.4 mm pitch) with exposed thermal pad. Pin assignments are validated per TI SPMS441B datasheet Rev. B (June 2014), including dedicated Ethernet RMII pins (TXD0–TXD1, RXD0–RXD1, REFCLK, CRS_DV), USB D+/D−, and EPI address/data bus (EP0–EP31).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F767ZIT6 and RZ/A2M, the TM4C129ENCPDTT3 uniquely combines integrated Ethernet PHY, comprehensive crypto acceleration (AES/DES/SHA/MD5), and 1.7 µA hibernation - making it optimal for compact, secure, battery-aware industrial edge controllers where BOM reduction and power efficiency are critical.

Availability

TM4C129ENCPDTT3 is available at Aetrix Electronics and suitable for industrial gateways, secure RTUs, PLC I/O modules, and HMI controllers requiring stable component supply across multi-year production programs.

Supply support for TM4C129ENCPDTT3 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 communications markets since 1930.

The TM4C129ENCPDTT3 belongs to the Tiva™ C Series, designed specifically for high-performance, connectivity-rich industrial control applications demanding integrated networking, security, and real-time responsiveness in a single-chip solution.

FAQ

What is the maximum operating frequency of the TM4C129ENCPDTT3?

The TM4C129ENCPDTT3 operates at a maximum CPU frequency of 120 MHz. This clock speed is achieved using the internal PLL driven by the main oscillator or an external crystal. The ARM Cortex-M4F core sustains this rate across its full temperature range (–40°C to 105°C), enabling deterministic execution of real-time control loops and protocol stacks without throttling. All peripherals-including Ethernet MAC, USB OTG, and EPI-are fully functional at this speed.

Does the TM4C129ENCPDTT3 include an integrated Ethernet PHY?

Yes, the TM4C129ENCPDTT3 integrates a full 10/100 Ethernet PHY compliant with IEEE 802.3u. It supports RMII interface with dedicated pins (RMII_TXD0/1, RMII_RXD0/1, REFCLK, CRS_DV) and includes internal termination, magnetics biasing, and auto-negotiation logic. No external PHY IC is required, reducing bill-of-materials cost and PCB footprint while maintaining signal integrity for industrial Ethernet deployments.

What cryptographic algorithms does the TM4C129ENCPDTT3 hardware accelerator support?

The TM4C129ENCPDTT3 includes dedicated hardware accelerators for AES-128/256 (ECB/CBC/CTR/GCM), DES/3DES (ECB/CBC), SHA-1/256, and MD5. These engines operate independently of the CPU, allowing concurrent encryption/decryption and hash generation. Performance benchmarks show AES-128 CBC encryption at >100 MB/s, enabling TLS 1.2 handshakes in under 100 ms and secure OTA firmware updates without impacting real-time application tasks.

What is the hibernation current consumption of the TM4C129ENCPDTT3?

The TM4C129ENCPDTT3 achieves a typical hibernation current of 1.7 µA when the RTC and 6 KB of battery-backed RAM remain active. This specification is measured at 3.3 V and 25°C per TI SPMS441B datasheet Section 1.3.13. The low quiescent current enables multi-year operation on coin-cell batteries in remote monitoring applications, with precise wake-up scheduling via RTC match or external GPIO events.

Is the TM4C129ENCPDTT3 pin-compatible with other Tiva C Series microcontrollers?

No, the TM4C129ENCPDTT3 is not pin-compatible with earlier Tiva C Series devices such as TM4C123x or TM4C129x variants in different packages (e.g., 100-pin or 144-pin). Its 128-pin LQFP footprint and specific pin assignments-including dedicated RMII and EPI signals-are unique to the TM4C129ENCPDT family. Migration requires PCB redesign; however, software compatibility is maintained via TivaWare™ peripheral driver libraries and CMSIS-compliant startup code.