Texas Instruments TM4C1294NCPDTI3R

Overview

TM4C1294NCPDTI3R 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 dual CAN controllers - deployed in industrial gateways requiring real-time protocol bridging and secure edge connectivity.

For engineers reviewing the TM4C1294NCPDTI3R datasheet, TM4C1294NCPDTI3R pinout, TM4C1294NCPDTI3R application, or TM4C1294NCPDTI3R equivalent, key selection criteria include Ethernet PHY integration, deterministic interrupt latency under 20 ns, on-chip cryptographic acceleration (AES-128/SHA-1), and support for TivaWare™ C Series software stack v2.2+.

Technical Context

The TM4C1294NCPDTI3R implements a single-core ARM Cortex-M4F CPU with hardware floating-point unit (FPU), memory protection unit (MPU), and nested vectored interrupt controller (NVIC) supporting up to 128 interrupts with configurable priority grouping. It integrates a full-speed USB 2.0 OTG controller with internal transceiver and dedicated DMA channel.

Its system-level architecture includes a 32-bit AHB bus matrix, μDMA controller with 32-channel capability, and peripheral-specific clock gating enabling dynamic power scaling. The device supports hibernation mode with RTC wake-up, tamper detection, and battery-backed SRAM retention - all managed via dedicated Hibernation Module registers.

Key Specifications

Pinout & Package

TM4C1294NCPDTI3R is housed in a 128-pin LQFP package (package code: NCPDT) with exposed thermal pad. Pin functions are defined per TI SPMS433B 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 TM4C1290NCPDTI3R and STM32F767ZIT6, the TM4C1294NCPDTI3R uniquely combines integrated 10/100 Ethernet PHY, dual CAN, tamper detection, and hardware crypto acceleration - enabling single-chip industrial edge node designs without compromising on security or protocol flexibility.

Availability

TM4C1294NCPDTI3R is available at Aetrix Electronics and suitable for industrial gateways, secure edge telemetry units, PLC I/O modules, and HMI controllers requiring stable component supply and long-term manufacturability.

Supply support for TM4C1294NCPDTI3R 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 since 1930.

The TM4C1294NCPDTI3R belongs to the Tiva™ C Series microcontroller family, designed specifically for industrial connectivity, real-time control, and secure edge intelligence - with emphasis on integrated communications peripherals and robust operating temperature range.

FAQ

What is the maximum operating frequency of the TM4C1294NCPDTI3R?

The TM4C1294NCPDTI3R operates at a maximum system clock frequency of 120 MHz, derived from its internal PLL with support for multiple clock sources including external crystals (1–25 MHz), internal oscillators, or precision clock inputs. This frequency is sustained across the full industrial temperature range (–40°C to +105°C) and enables deterministic real-time execution for industrial control loops and protocol stacks. The TM4C1294NCPDTI3R achieves this performance while maintaining low power consumption through dynamic clock gating and sleep mode support.

Does the TM4C1294NCPDTI3R include an integrated Ethernet PHY?

Yes, the TM4C1294NCPDTI3R integrates a full 10/100 Mbps Ethernet PHY compliant with IEEE 802.3u, eliminating the need for an external PHY IC. It provides RMII interface signals (REFCLK, CRS_DV, RXD[1:0], TXD[1:0]) and supports auto-negotiation, loopback modes, and MII management interface. This integration reduces bill-of-materials cost and PCB footprint significantly compared to MCU+external-PHY solutions. The TM4C1294NCPDTI3R leverages this feature for compact industrial Ethernet gateway designs.

What security features does the TM4C1294NCPDTI3R provide?

The TM4C1294NCPDTI3R includes hardware-accelerated cryptographic functions: AES-128, SHA-1, MD5, and CRC-16/32, plus a dedicated Hibernation Module with tamper detection inputs (TAMP0–TAMP3) that trigger immediate secure hibernate on voltage or enclosure breach. It also supports secure boot via ROM bootloader with signature verification. These features meet baseline requirements for IEC 62443-3-3 SL2 in industrial edge devices. The TM4C1294NCPDTI3R uses these capabilities to protect firmware integrity and sensor data confidentiality in field-deployed systems.

Can the TM4C1294NCPDTI3R operate in hibernation mode with RTC functionality?

Yes, the TM4C1294NCPDTI3R includes a dedicated Hibernation Module that supports deep-sleep hibernation with real-time clock (RTC) operation powered by a separate VBAT supply. In hibernation mode, it retains 6 KB of SRAM, maintains RTC accuracy within ±5 ppm using a 32.768 kHz external crystal, and supports wake-up via RTC alarm, external GPIO, or tamper event. This capability enables battery-backed operation for remote telemetry units. The TM4C1294NCPDTI3R uses this mode to extend field deployment life without sacrificing timekeeping fidelity.

What development tools and software support are available for the TM4C1294NCPDTI3R?

Texas Instruments provides full support for the TM4C1294NCPDTI3R via TivaWare™ C Series software (v2.2+), Code Composer Studio™ IDE, and the EK-TM4C1294XL LaunchPad™ development kit. Drivers, middleware (including uIP TCP/IP stack and USB device/host libraries), and example projects are included. TI also offers technical documentation, application notes, and online training modules. Engineers can begin prototyping immediately using the TM4C1294NCPDTI3R with validated toolchain integration and reference designs.