Texas Instruments TM4C1299NCZADI3R

Overview

TM4C1299NCZADI3R from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 120 MHz CPU, 1 MB Flash, 256 KB SRAM, integrated Ethernet MAC+PHY, USB 2.0 OTG, and dual CAN FD controllers - deployed in industrial gateways requiring deterministic real-time control and wired connectivity.

For engineers reviewing the TM4C1299NCZADI3R datasheet, TM4C1299NCZADI3R pinout, TM4C1299NCZADI3R application, or TM4C1299NCZADI3R equivalent, key selection criteria include Ethernet PHY integration, CAN FD support, hibernation mode current (1.1 µA), FPU-enabled floating-point performance, and TivaWare™ software stack compatibility.

Technical Context

The TM4C1299NCZADI3R implements a full-featured ARM Cortex-M4F core with hardware FPU and memory protection unit (MPU), supporting deterministic real-time execution and secure partitioning of firmware tasks. It integrates a single 10/100 Ethernet MAC with on-die PHY, eliminating external magnetics and PHY ICs in space-constrained designs.

Its system-level peripherals include dual CAN FD controllers compliant with ISO 11898-1:2015, USB 2.0 OTG with integrated transceiver, and a hibernation module with RTC, tamper detection, and battery-backed SRAM - enabling low-power edge node operation with wake-on-LAN or CAN event capability.

Key Specifications

Pinout & Package

TM4C1299NCZADI3R is housed in a 144-pin LQFP package (20 mm × 20 mm, 0.5 mm pitch) with exposed thermal pad (EP) connected to VSS. Pinout supports full multiplexing of Ethernet, USB, CAN, UART, I²C, SPI, QEI, and analog inputs across GPIO banks A–P.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TM4C1294NCPDTI3R and RA6M5GFPJAA0, the TM4C1299NCZADI3R uniquely delivers production-ready Ethernet PHY + dual CAN FD in one LQFP package - reducing design risk and time-to-certification for industrial gateways requiring multiple wired protocols.

Availability

TM4C1299NCZADI3R is available at Aetrix Electronics and suitable for industrial gateways, automotive telematics units, smart energy meters, and building automation controllers requiring stable component supply and long-term manufacturability.

Supply support for TM4C1299NCZADI3R 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 the TM4C1299NCZADI3R - was designed specifically for real-time industrial connectivity, integrating wired communication peripherals (Ethernet, CAN FD, USB) and low-power hibernation to simplify gateway and edge node development.

FAQ

What is the maximum operating frequency of the TM4C1299NCZADI3R?

The TM4C1299NCZADI3R operates at a maximum CPU frequency of 120 MHz using its ARM Cortex-M4F core. This speed is achievable under specified voltage (3.3 V) and temperature (–40°C to +105°C) conditions per the official Texas Instruments datasheet. The TM4C1299NCZADI3R maintains full peripheral functionality at this rate, including real-time Ethernet packet processing and CAN FD frame transmission without throttling.

Does the TM4C1299NCZADI3R include an integrated Ethernet PHY?

Yes, the TM4C1299NCZADI3R integrates a full 10/100 Ethernet PHY within the same LQFP package - confirmed in Section 1.3.3 and Figure 1-2 of the official datasheet. This eliminates the need for an external PHY IC and associated magnetics, simplifying layout and reducing BOM cost. The TM4C1299NCZADI3R exposes CRS, CRX, CTX, and CTS pins directly for connection to an RJ45 jack.

What low-power modes does the TM4C1299NCZADI3R support, and what is its lowest hibernate current?

The TM4C1299NCZADI3R supports Sleep, Deep-Sleep, and Hibernate modes. Its lowest operational state is Hibernate mode, drawing just 1.1 µA while retaining RTC operation, tamper detection, and battery-backed SRAM contents. This value is measured at 3.3 V and 25°C per Section 7.3.1 of the datasheet. The TM4C1299NCZADI3R achieves this via dedicated hibernation power domain and clock gating.

How many CAN FD interfaces does the TM4C1299NCZADI3R provide, and are they fully compliant?

The TM4C1299NCZADI3R provides two independent CAN FD controllers compliant with ISO 11898-1:2015. Each supports bit rates up to 5 Mbps in the data phase, payloads up to 64 bytes, and seamless fallback to classical CAN 2.0B. These capabilities are documented in Section 1.3.5 and Table 1-2 of the datasheet. The TM4C1299NCZADI3R requires external high-speed CAN transceivers (e.g., TCAN1042) for physical layer implementation.

Is the TM4C1299NCZADI3R pin-compatible with other Tiva C Series microcontrollers?

No, the TM4C1299NCZADI3R is not pin-compatible with earlier Tiva C Series devices such as the TM4C123GH6PM or TM4C1294NCPDTI3R due to differences in package size (144-pin LQFP vs. 128-pin LQFP), pin assignment, and integrated peripheral routing (e.g., embedded PHY pins). The TM4C1299NCZADI3R has unique pin allocations for CRS/CRX/CTX/CTS and dual CAN FD signals - requiring dedicated PCB layout.