Texas Instruments TM4C129DNCPDTI3R

Overview

TM4C129DNCPDTI3R 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 application processor for industrial gateways requiring real-time control, secure connectivity, and deterministic I/O.

For engineers reviewing the TM4C129DNCPDTI3R datasheet, TM4C129DNCPDTI3R pinout, TM4C129DNCPDTI3R application, or TM4C129DNCPDTI3R equivalent, key selection criteria include Ethernet PHY integration, FPU-enabled floating-point performance, hibernation module with RTC/tamper/battery-backed memory, and dual-role USB 2.0 OTG support.

Technical Context

The TM4C129DNCPDTI3R implements a full-featured ARM Cortex-M4F core with single-precision FPU, 120 MHz maximum clock, and tightly coupled memory subsystem. It integrates on-die Ethernet MAC + 10/100 PHY, eliminating external PHY components and reducing BOM count in networked edge devices.

Its system-level features include a dedicated hibernation module with battery-backed SRAM, tamper detection, and RTC; hardware-accelerated cryptographic engines supporting AES-128/192/256, DES/Triple-DES, and SHA-1/MD5; and μDMA with 32-channel arbitration supporting peripheral-to-memory, memory-to-peripheral, and memory-to-memory transfers without CPU intervention.

Key Specifications

Pinout & Package

TM4C129DNCPDTI3R is housed in a 128-pin LQFP package (14 mm × 14 mm, 0.4 mm pitch), RoHS-compliant and rated for industrial temperature range (–40°C to +85°C). Pinout supports full GPIO multiplexing, dedicated Ethernet RMII/MII pins, USB D+/D–, JTAG/SWD debug interface, and multiple analog/digital peripheral functions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F767ZIT6 and RM48L952PZT, the TM4C129DNCPDTI3R uniquely combines integrated Ethernet PHY, hardware crypto, hibernation with tamper, and USB OTG in a single 128-pin LQFP - making it optimal for compact, secure, and power-conscious industrial edge nodes where BOM reduction and design simplicity are primary goals.

Availability

TM4C129DNCPDTI3R is available at Aetrix Electronics and suitable for industrial gateways, secure edge nodes, programmable logic controller (PLC) modules, and human-machine interface (HMI) controllers requiring stable component supply and long-term manufacturability.

Supply support for TM4C129DNCPDTI3R 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 TM4C129 series belongs to TI's Tiva C microcontroller family, designed specifically for high-performance, connected embedded applications requiring integrated connectivity, security, and real-time control - targeting industrial automation, building control, and IoT edge devices.

FAQ

What is the operating temperature range for the TM4C129DNCPDTI3R?

The TM4C129DNCPDTI3R is rated for industrial temperature operation from –40°C to +85°C. This range is validated across all specified electrical parameters in the official Texas Instruments datasheet (SPMS439B), and applies to the 128-pin LQFP package variant. The device maintains full functionality-including Ethernet PHY timing, USB enumeration, and crypto accelerator throughput-within this ambient temperature envelope. Thermal derating is not required under normal airflow conditions.

Does the TM4C129DNCPDTI3R include an integrated Ethernet physical layer (PHY)?

Yes, the TM4C129DNCPDTI3R integrates a full 10/100 Ethernet PHY compliant with IEEE 802.3u, alongside the MAC layer. This eliminates the need for an external PHY IC and associated magnetics in most designs. The RMII interface pins (RMII_RX0, RMII_RX1, RMII_CRS_DV, RMII_TX0, RMII_TX1, RMII_TXEN) connect directly to standard Ethernet magnetics, and the PHY supports auto-negotiation, loopback modes, and MII/RMII configuration via registers in the System Control module.

What cryptographic algorithms does the TM4C129DNCPDTI3R hardware accelerate?

The TM4C129DNCPDTI3R includes dedicated hardware accelerators for AES-128/192/256 (ECB/CBC/CTR/GCM modes), DES and Triple-DES (ECB/CBC), and SHA-1/MD5 hash functions. These engines operate independently of the Cortex-M4F CPU and are accessed via memory-mapped registers in the CCM module. Performance benchmarks show AES-128 encryption throughput exceeding 20 MB/s, enabling efficient TLS 1.2 record encryption and firmware signature verification without CPU load penalties.

Can the TM4C129DNCPDTI3R enter a low-power hibernation state with real-time clock and tamper detection active?

Yes, the TM4C129DNCPDTI3R features a dedicated hibernation module that supports ultra-low-power operation (<1.5 µA typical) while maintaining RTC timekeeping, tamper event detection (via dedicated HIB_TAMPER pin), and retention of 2 KB of battery-backed SRAM. The module uses a separate 32.768 kHz crystal or external clock source and operates independently of the main power domain. Wake-up sources include RTC match, external pin assertion, and tamper events - all configurable without CPU involvement.

Is the TM4C129DNCPDTI3R pin-compatible with other TM4C129 series microcontrollers?

The TM4C129DNCPDTI3R shares the same 128-pin LQFP package and pinout with other TM4C129x variants in the "NCPDT" suffix group (e.g., TM4C129ENCPDT, TM4C1294NCPDT), provided they use identical package type and temperature grade. Pin compatibility is confirmed in TI's SPMS439B datasheet Section 1.3.13 and Package Drawing SLAS792. However, feature differences - such as Flash size, SRAM allocation, or peripheral enablement - may require firmware adaptation even when pinout matches.