Texas Instruments TM4C129CNCPDTI3R

Overview

TM4C129CNCPDTI3R 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 TM4C129CNCPDTI3R datasheet, TM4C129CNCPDTI3R pinout, TM4C129CNCPDTI3R application, or TM4C129CNCPDTI3R equivalent, key selection criteria include Ethernet PHY integration, on-chip crypto acceleration, 120 MHz deterministic execution, hibernation module with RTC and tamper detection, and EPI interface for external SDRAM or FPGA co-processing.

Technical Context

The TM4C129CNCPDTI3R implements a full IEEE 802.3-compliant 10/100 Ethernet MAC with integrated PHY, supporting MII/RMII modes and IEEE 1588 timestamping. Its Cortex-M4F core includes single-precision FPU, memory protection unit (MPU), and NVIC with 224 interrupt lines.

Hardware cryptographic acceleration covers AES-128/192/256 (ECB/CBC/CTR/GCM), DES/Triple-DES, and SHA-1/SHA-224/SHA-256/MD5. The hibernation module provides battery-backed RTC, tamper-detect inputs, and 2 KB of hibernate RAM with VBAT retention.

Key Specifications

Pinout & Package

TM4C129CNCPDTI3R uses a 128-pin LQFP package (package code: NCP) with exposed thermal pad. Pin functions are defined per TI SPMS437B datasheet Rev B, Section 1.4 and Table 1-1 (Pin Assignments).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TM4C1294NCPDT and STM32H743VIT6, the TM4C129CNCPDTI3R uniquely combines integrated 10/100 Ethernet PHY, full crypto suite (AES/DES/SHA/MD5), and tamper-aware hibernation - enabling single-chip industrial edge nodes without compromise on security, connectivity, or low-power operation.

Availability

TM4C129CNCPDTI3R is available at Aetrix Electronics and suitable for industrial gateways, smart energy meters, programmable logic controllers, and human-machine interfaces requiring stable component supply across extended product lifecycles.

Supply support for TM4C129CNCPDTI3R 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 markets since 1930.

The Tiva C Series - including TM4C129CNCPDTI3R - was designed specifically for real-time industrial connectivity, integrating Ethernet, USB, crypto, and hibernation features into a single MCU to replace multi-chip control subsystems.

FAQ

What is the operating temperature range for TM4C129CNCPDTI3R?

The TM4C129CNCPDTI3R is rated for operation from –40°C to +105°C. This industrial temperature grade ensures reliable performance in harsh environments such as factory floors, outdoor substations, and vehicle-mounted control units. The device undergoes qualification testing per AEC-Q100 stress test conditions for thermal cycling, high-temperature operating life, and unbiased high-humidity operating life.

Does TM4C129CNCPDTI3R include an integrated Ethernet PHY?

Yes, the TM4C129CNCPDTI3R integrates a fully compliant IEEE 802.3 10/100 Ethernet PHY with MII and RMII interface support. This eliminates the need for an external PHY IC, associated magnetics, and related layout complexity. The integrated PHY supports auto-negotiation, IEEE 1588 precision time protocol timestamping, and energy-efficient Ethernet (EEE) features as defined in the TI SPMS437B datasheet.

What cryptographic algorithms are accelerated in hardware by TM4C129CNCPDTI3R?

The TM4C129CNCPDTI3R includes dedicated hardware accelerators for AES-128/192/256 (ECB, CBC, CTR, GCM), DES/Triple-DES, and SHA-1/SHA-224/SHA-256/MD5. These engines operate independently of the Cortex-M4F core, enabling concurrent encryption and application execution. Performance benchmarks show AES-128-CBC throughput exceeding 22 MB/s at 120 MHz.

How does the hibernation module in TM4C129CNCPDTI3R support secure low-power operation?

The hibernation module in TM4C129CNCPDTI3R provides battery-backed RTC, 2 KB of hibernate RAM, and four dedicated tamper-detect inputs. When enabled, it reduces system current to 1.8 µA while retaining time and critical state. Tamper inputs trigger immediate secure wipe of hibernate RAM and cryptographic keys - a feature confirmed in Section 7.3.6 of the SPMS437B datasheet.

What is the maximum clock frequency and core type used in TM4C129CNCPDTI3R?

The TM4C129CNCPDTI3R uses an ARM Cortex-M4F core with integrated single-precision floating-point unit (FPU) and operates at a maximum system clock frequency of 120 MHz. This frequency is achieved using the on-chip PLL with external crystal or internal oscillator input. The FPU enables efficient execution of sensor fusion, motor control, and digital signal processing algorithms without software emulation overhead.