Texas Instruments TM4C129CNCZADT3

Overview

TM4C129CNCZADT3 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 deterministic real-time control, secure connectivity, and local protocol bridging.

For engineers reviewing the TM4C129CNCZADT3 datasheet, TM4C129CNCZADT3 pinout, TM4C129CNCZADT3 application, or TM4C129CNCZADT3 equivalent, key selection criteria include Ethernet PHY integration, FPU-enabled floating-point performance, hibernation-mode RTC with battery-backed memory, and dual-role USB 2.0 OTG support for field-upgradable edge nodes.

Technical Context

The TM4C129CNCZADT3 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, eliminating external magnetics and PHY ICs in cost-sensitive industrial Ethernet nodes.

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 maintain real-time determinism during secure boot or TLS offload. The hibernation module provides sub-1 µA deep-sleep current with RTC, tamper detection, and 2 KB battery-backed SRAM.

Key Specifications

Pinout & Package

TM4C129CNCZADT3 is housed in a 128-pin LQFP package (14 mm × 14 mm, 0.4 mm pitch) with exposed thermal pad. Pin assignments follow TI's standardized Tiva C Series pinout for signal grouping (e.g., GPIO banks A–K, Ethernet MII/RMII, USB D+/D−, JTAG/SWD).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TM4C129CNCZADT3, TM4C1294NCPDT trades integrated Ethernet PHY for slightly smaller package pitch and higher thermal resistance, while STM32H743VIT6 offers higher CPU performance at the cost of increased external component count and no native hibernation-RTC battery backup.

Availability

TM4C129CNCZADT3 is available at Aetrix Electronics and suitable for industrial Ethernet gateways, secure edge node controllers, programmable logic controller I/O modules, and USB-configurable field instruments requiring stable component supply across extended product lifecycles.

Supply support for TM4C129CNCZADT3 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 TM4C129CNCZADT3 belongs to TI's Tiva C Series microcontroller family, designed specifically for industrial connectivity applications requiring integrated Ethernet, USB, crypto acceleration, and ultra-low-power hibernation capabilities.

FAQ

What is the maximum operating frequency of the TM4C129CNCZADT3?

The TM4C129CNCZADT3 operates at a maximum system clock frequency of 120 MHz. This speed is achieved using the internal PLL driven from the precision internal oscillator or an external crystal source. The ARM Cortex-M4F core maintains full instruction throughput at this rate, and all on-chip peripherals-including Ethernet MAC, USB, and crypto accelerators-are fully functional and timing-compliant at 120 MHz. The TM4C129CNCZADT3 datasheet specifies AC timing parameters validated up to this frequency under industrial temperature conditions.

Does the TM4C129CNCZADT3 include an integrated Ethernet PHY?

Yes, the TM4C129CNCZADT3 integrates a fully compliant IEEE 802.3 10/100 Mbps Ethernet PHY alongside its MAC layer. This eliminates the need for an external PHY IC and associated magnetics in most designs. The PHY supports both MII and RMII interfaces and includes auto-negotiation, loopback modes, and built-in ESD protection. All necessary PHY registers are memory-mapped and controllable via the TM4C129CNCZADT3's system control module.

What cryptographic algorithms does the TM4C129CNCZADT3 hardware accelerator support?

The TM4C129CNCZADT3 includes dedicated hardware accelerators for AES-128/192/256 (in ECB, CBC, CTR, and GCM modes), DES and Triple-DES, and SHA-1, SHA-224, SHA-256, and MD5. These engines operate independently of the CPU and can process data in parallel with application code execution. The TM4C129CNCZADT3 crypto subsystem is accessible via memory-mapped registers and supports DMA-triggered operation for high-throughput secure communications.

What is the hibernation current consumption of the TM4C129CNCZADT3?

The TM4C129CNCZADT3 achieves a typical hibernation current of 0.9 µA at 25°C with RTC enabled and 2 KB hibernate SRAM retained. This value is measured with VDD3 supplied externally and all other supplies disabled. The hibernation module retains real-time clock operation, tamper detection inputs, and battery-backed memory while disabling the main CPU, Flash, SRAM, and most peripherals. The TM4C129CNCZADT3 datasheet specifies this parameter under defined test conditions and confirms operation down to –40°C.

Is the TM4C129CNCZADT3 pin-compatible with other Tiva C Series microcontrollers?

No, the TM4C129CNCZADT3 is not pin-compatible with earlier Tiva C Series devices such as the TM4C123 or TM4C129x variants in different packages. While it shares the same 128-pin LQFP footprint as the TM4C1294NCPDT, pin functions differ significantly-especially for Ethernet, USB, and hibernation signals. The TM4C129CNCZADT3 has unique pin assignments for its integrated PHY and enhanced hibernate control lines. Board designs must be verified against the official TM4C129CNCZADT3 pinout diagram before reuse.