Texas Instruments TM4C123GH6ZRBIR

Overview

TM4C123GH6ZRBIR from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 256 KB flash, 32 KB SRAM, and integrated USB 2.0 OTG, PWM, ADC (12-bit, 1MSPS), and multiple serial interfaces (UART, SPI, I²C). It operates at 80 MHz and supports hibernation mode for ultra-low-power operation in battery-powered industrial sensors and motor control systems.

For engineers reviewing the TM4C123GH6ZRBIR datasheet, TM4C123GH6ZRBIR pinout, TM4C123GH6ZRBIR application, or TM4C123GH6ZRBIR equivalent, key selection criteria include its 80 MHz Cortex-M4F core with FPU, 12-bit 1MSPS ADC with hardware averaging, USB OTG capability, hibernation module with RTC and battery-backed memory, and QFN-64 package with 51 GPIOs.

Technical Context

The TM4C123GH6ZRBIR integrates a 32-bit ARM Cortex-M4F core with single-precision floating-point unit and NVIC supporting up to 80 interrupts. Its system-level integration includes μDMA controller (32 channels), hibernation module with real-time clock and battery-backed RAM, and ROM-based bootloader with TivaWare support.

Peripherals are tightly coupled via the AHB/APB bus matrix: ADC supports four sample sequencers with digital comparators; PWM subsystem provides 8 PWM generator blocks with fault handling; USB controller implements full-speed OTG with internal PHY and 1 KB FIFO; and GPIOs offer configurable slew rate, drive strength, and interrupt masking per pin.

Key Specifications

Pinout & Package

TM4C123GH6ZRBIR is housed in a 64-pin QFN package (9 mm × 9 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per TI SPMS378E datasheet Rev E (June 2014), including dedicated JTAG/SWD debug pins, USB D+/D−, VDD/VSS rails, and multiplexed peripheral signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F407VGT6 and MSP432P401RIPZ, the TM4C123GH6ZRBIR delivers balanced performance, integrated USB device functionality, and industrial-grade peripheral set in a compact QFN-64 package - making it optimal for cost-sensitive, space-constrained embedded control where USB device connectivity and motor control peripherals are essential.

Availability

TM4C123GH6ZRBIR is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, USB human interface devices, and programmable logic controller I/O modules requiring stable component supply across production lifecycles.

Supply support for TM4C123GH6ZRBIR 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, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.

The Tiva C Series - including the TM4C123GH6ZRBIR - was designed specifically for real-time industrial control, motor drive, and sensor interface applications requiring high integration, deterministic timing, and robust debug infrastructure.

FAQ

What is the maximum operating frequency of the TM4C123GH6ZRBIR?

The TM4C123GH6ZRBIR operates at a maximum system clock frequency of 80 MHz, derived from its internal PLL with support for multiple clock sources including precision internal oscillator, external crystal (up to 25 MHz), or external clock input. This frequency is fully supported across all operating voltage ranges (3.0 V to 3.6 V) and industrial temperature range (–40°C to +105°C), enabling deterministic real-time execution for time-critical control loops.

Does the TM4C123GH6ZRBIR include an integrated USB physical layer (PHY)?

Yes, the TM4C123GH6ZRBIR includes a full-speed USB 2.0 OTG physical layer integrated into the die, supporting both device and host roles without external transceivers. The USB0DP and USB0DM pins connect directly to the USB connector, and the on-chip PHY complies with USB 2.0 specification with built-in termination and slew-rate control - confirmed in Section 14.2 of TI SPMS378E datasheet.

How many analog-to-digital converter (ADC) channels does the TM4C123GH6ZRBIR support?

The TM4C123GH6ZRBIR features a single 12-bit ADC with up to 12 external input channels and 1 internal temperature sensor channel. It supports four independent sample sequencers, each configurable for hardware-triggered or processor-triggered conversions, with optional hardware averaging across up to 64 samples per channel - detailed in Section 13.3.1 of the official datasheet.

What debug interfaces are supported by the TM4C123GH6ZRBIR?

The TM4C123GH6ZRBIR supports both 4-pin JTAG and 2-pin Serial Wire Debug (SWD) interfaces via dedicated pins (TCK, TMS, TDI, TDO, SWCLK, SWDIO). These interfaces provide full ARM CoreSight debug access including breakpoints, watchpoints, register inspection, and flash programming - documented in Sections 4 and 1.3.7 of TI SPMS378E.

Is the TM4C123GH6ZRBIR qualified for industrial temperature operation?

Yes, the TM4C123GH6ZRBIR is rated for industrial temperature range of –40°C to +105°C and is manufactured in TI's qualified industrial process. This rating is specified in Section 1.3.8 "Packaging and Temperature" of the SPMS378E datasheet and applies to the QFN-64 package variant (suffix 'R'), confirming suitability for harsh environments such as factory automation and outdoor sensor enclosures.