Texas Instruments TM4C129LNCZADI3R

Overview

TM4C129LNCZADI3R 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 TM4C129LNCZADI3R datasheet, TM4C129LNCZADI3R pinout, TM4C129LNCZADI3R application, or TM4C129LNCZADI3R equivalent, key selection criteria include Ethernet PHY integration, on-chip crypto acceleration, hibernation mode with RTC and tamper detection, and EPI support for external SDRAM or FPGA interfacing.

Technical Context

The TM4C129LNCZADI3R implements a full IEEE 802.3-compliant 10/100 Ethernet interface with integrated PHY, eliminating external magnetics in many designs. Its Cortex-M4F core includes single-precision FPU and memory protection unit (MPU), enabling deterministic floating-point math and secure partitioning of firmware tasks.

Hardware cryptographic acceleration covers AES-128/192/256 (ECB/CBC/CTR/GCM), DES/Triple-DES, and SHA-1/SHA-224/SHA-256/MD5 - all operating independently of the CPU to preserve real-time latency. The hibernation module supports battery-backed RTC, tamper-detection inputs, and 1 KB of hibernate memory with VBAT retention.

Key Specifications

Pinout & Package

TM4C129LNCZADI3R is housed in a 144-pin LQFP package (20 mm × 20 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per TI SPMS443B datasheet Rev B, Section 1.3.13 and Table 1-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TM4C1294NCPDT and STM32H743VI, the TM4C129LNCZADI3R uniquely delivers production-ready Ethernet PHY integration and full-suite hardware crypto - reducing design risk, certification effort, and time-to-market for secure industrial edge devices.

Availability

TM4C129LNCZADI3R is available at Aetrix Electronics and suitable for industrial gateways, secure edge sensors, programmable logic controllers, human-machine interfaces, and Ethernet-enabled embedded systems requiring stable component supply across multi-year production cycles.

Supply support for TM4C129LNCZADI3R 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 TM4C129LNCZADI3R - was designed specifically for real-time industrial connectivity, integrating communication peripherals, security accelerators, and low-power hibernation to simplify development of certified edge devices.

FAQ

What is the maximum operating frequency of the TM4C129LNCZADI3R?

The TM4C129LNCZADI3R operates at a maximum system clock frequency of 120 MHz, derived from its internal PLL with support for multiple clock sources including external crystal (1–25 MHz), internal oscillator, or precision internal oscillator (PIOSC). This frequency is fully supported across all voltage and temperature ranges specified in the SPMS443B datasheet.

Does the TM4C129LNCZADI3R include an integrated Ethernet PHY?

Yes, the TM4C129LNCZADI3R integrates a fully compliant IEEE 802.3 10/100 Ethernet PHY with RMII interface, including MII management signals (MDC/MDIO), differential TX/RX pairs, and internal termination. No external PHY IC or Ethernet magnetics are required for basic operation, though optional magnetics may be used for ESD or common-mode noise suppression.

What cryptographic algorithms are accelerated in hardware by the TM4C129LNCZADI3R?

The TM4C129LNCZADI3R includes dedicated hardware accelerators for AES-128/192/256 (ECB, CBC, CTR, GCM modes), DES and Triple-DES, and SHA-1, SHA-224, SHA-256, and MD5 hash functions. These operate independently of the CPU and are accessible via memory-mapped registers per Section 13 of the SPMS443B datasheet.

What is the hibernation current consumption of the TM4C129LNCZADI3R?

In hibernate mode with RTC enabled and VBAT supplied, the TM4C129LNCZADI3R draws ≤1.5 µA typical current at 25°C, as measured per Section 7.3.8 of the SPMS443B datasheet. This includes active RTC counting, tamper input monitoring, and retention of 1 KB hibernate RAM.

Is the TM4C129LNCZADI3R pin-compatible with other TM4C129x variants?

No, the TM4C129LNCZADI3R is not pin-compatible with other TM4C129x devices due to its unique 144-pin LQFP package and inclusion of dedicated Ethernet PHY pins (e.g., ETH0–ETH11) not present in 128-pin variants like TM4C1294NCPDT. Pin mappings differ significantly; migration requires PCB redesign.