Texas Instruments TM4C1297NCZADI3R

Overview

TM4C1297NCZADI3R 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 FD controllers - deployed in industrial gateways requiring real-time protocol bridging and secure edge connectivity.

For engineers reviewing the TM4C1297NCZADI3R datasheet, TM4C1297NCZADI3R pinout, TM4C1297NCZADI3R application, or TM4C1297NCZADI3R equivalent, key selection criteria include Ethernet PHY integration, CAN FD timing compliance, hibernation-mode current (2.1 µA), FPU-enabled deterministic control loops, and TivaWare™ software stack support.

Technical Context

The TM4C1297NCZADI3R implements a single-core ARM Cortex-M4F with hardware floating-point unit and memory protection unit (MPU), supporting deterministic real-time execution. It integrates a full-speed USB 2.0 OTG controller with internal transceiver, IEEE 802.3-compliant 10/100 Ethernet MAC + PHY, and two independent CAN FD controllers compliant with ISO 11898-1:2015.

System-level features include hibernation mode with RTC and battery-backed SRAM, configurable μDMA with 32-channel arbitration, and EPI interface supporting SDRAM, NOR flash, and FPGA interfacing. Clock management supports multiple PLL configurations with spread-spectrum modulation for EMI reduction.

Key Specifications

Pinout & Package

TM4C1297NCZADI3R is housed in a 144-pin LQFP package (20 mm × 20 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments are defined per TI SPMS435B datasheet Rev. C (June 2014), with dedicated VDDA/VSSA analog supplies, separate I/O banks (Port A–K), and multiplexed peripheral functions including EMAC, EPI, and CAN FD signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TM4C1294NCPDTI3R, the TM4C1297NCZADI3R saves board space and bill-of-materials cost via integrated PHY, while RA6M5DBGLFP#AA0 provides stronger security primitives at the expense of hibernation capability and CAN FD channel count.

Availability

TM4C1297NCZADI3R is available at Aetrix Electronics and suitable for industrial gateways, smart metering hubs, PLC I/O modules, and building automation edge nodes requiring stable component supply, long-lifecycle support, and qualified production lots.

Supply support for TM4C1297NCZADI3R 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 TM4C1297NCZADI3R belongs to the Tiva™ C Series microcontroller family, designed specifically for real-time industrial connectivity applications requiring integrated wired communications (Ethernet, CAN FD, USB) and deterministic control performance.

FAQ

What is the maximum operating frequency of the TM4C1297NCZADI3R?

The TM4C1297NCZADI3R operates at a maximum CPU frequency of 120 MHz using its internal PLL. This frequency is achievable under specified voltage (VDD = 1.2 V ± 3%) and temperature (–40°C to +105°C) conditions, and requires proper decoupling and thermal management per TI's PCB layout guidelines. The TM4C1297NCZADI3R maintains full peripheral functionality-including Ethernet MAC, USB OTG, and dual CAN FD-at this speed.

Does the TM4C1297NCZADI3R include an integrated Ethernet PHY?

Yes, the TM4C1297NCZADI3R integrates a fully compliant IEEE 802.3 10/100 Ethernet PHY alongside the MAC layer. This eliminates the need for an external PHY IC and associated magnetics in most designs. The PHY supports auto-negotiation, MDIO/MDC management interface, and standard RGMII-like signaling mapped to dedicated LQFP pins (EMAC_RX0–RX3, TX0–TX3).

What low-power modes does the TM4C1297NCZADI3R support, and what is the lowest current draw?

The TM4C1297NCZADI3R supports multiple low-power states, including Sleep, Deep-Sleep, and Hibernation. In Hibernation mode with RTC running and 8 KB SRAM retained, it draws just 2.1 µA typical at 25°C. This mode preserves real-time clock operation and critical data across power cycles using a coin-cell backup supply connected to the VBAT pin.

Is the TM4C1297NCZADI3R pin-compatible with other Tiva C Series microcontrollers?

No, the TM4C1297NCZADI3R is not pin-compatible with earlier Tiva C Series devices such as the TM4C123x or TM4C129x variants in smaller packages. Its 144-pin LQFP footprint and signal mapping-including dedicated EMAC, EPI, and dual CAN FD pins-are unique to the TM4C1297/1294 high-integration group. Migration requires PCB redesign and firmware adaptation.

What development tools and software support are available for the TM4C1297NCZADI3R?

Texas Instruments provides full support for the TM4C1297NCZADI3R through TivaWare™ Peripheral Driver Library, Code Composer Studio™ IDE, and the EK-TM4C1294XL LaunchPad™ development kit. TivaWare includes production-ready drivers for all peripherals, while CCS offers real-time debugging, energy profiling, and SysTick-based timing analysis - all validated for TM4C1297NCZADI3R silicon revisions.