Texas Instruments TM4C123GH6PGETR

Overview

TM4C123GH6PGETR from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 80 MHz operation, 256 KB flash, 32 KB SRAM, integrated USB 2.0 device/host/OTG, 12-bit ADC (1 MSPS, 12 channels), and 48 GPIOs in a 144-pin LQFP package. It serves as the main system controller in industrial motor drives requiring real-time PWM control, analog sensing, and USB connectivity.

For engineers reviewing the TM4C123GH6PGETR datasheet, TM4C123GH6PGETR pinout, TM4C123GH6PGETR application, or TM4C123GH6PGETR equivalent, key selection criteria include Cortex-M4F floating-point support, on-chip USB PHY, hibernation module with RTC and battery-backed memory, and dual 32-bit general-purpose timers with PWM and capture capability.

Technical Context

The TM4C123GH6PGETR integrates a 32-bit ARM Cortex-M4F core with hardware floating-point unit (FPU), supporting single-precision IEEE 754 operations and Thumb-2 instruction set. It features a 32-bit μDMA controller with 32 channel assignments and peripheral-specific arbitration, enabling zero-CPU-overhead data movement between peripherals and memory.

System-level integration includes a hibernation module with dedicated VBAT supply, real-time clock (RTC), battery-backed 2 KB SRAM, and wake-up on external event or RTC match. Clock management supports multiple sources (PIOSC, MOSC, PLL) with configurable dividers and power-gated peripherals to reduce active and sleep-mode current.

Key Specifications

Pinout & Package

TM4C123GH6PGETR uses a 144-pin LQFP package with exposed thermal pad (EP). Pin functions are defined per TI SPMS375E datasheet Rev E, including dedicated JTAG/SWD debug pins (TCK, TMS, TDI, TDO, nSRST), USB D+/D−, VDDA/VSSA analog supply pair, and multiple GPIO groups mapped to alternate peripheral functions (UART, I²C, SPI, PWM, QEI).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F407VGT6 and MSP432P401RIPZ, the TM4C123GH6PGETR uniquely combines USB PHY integration, hibernation with RTC and battery-backed SRAM, and QEI support in a single 144-pin LQFP package-making it optimal for cost-sensitive, space-constrained industrial controllers requiring robust low-power operation and motor interface capability.

Availability

TM4C123GH6PGETR is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, PLC I/O modules, and USB HID devices requiring stable component supply and long-term production support.

Supply support for TM4C123GH6PGETR 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 applications.

The Tiva C Series, including the TM4C123GH6PGETR, was designed specifically for cost-effective, real-time control applications demanding integrated connectivity, analog sensing, and low-power operation in harsh environments.

FAQ

What is the maximum operating frequency of the TM4C123GH6PGETR?

The TM4C123GH6PGETR operates at a maximum system clock frequency of 80 MHz, achieved using its internal PLL with an external crystal or precision internal oscillator. This frequency is fully supported across all peripherals and memory subsystems per TI SPMS375E datasheet Section 5.2.5, and enables deterministic execution of real-time control algorithms such as field-oriented motor control.

Does the TM4C123GH6PGETR include an integrated USB physical layer (PHY)?

Yes, the TM4C123GH6PGETR includes a full-speed USB 2.0 PHY integrated into the die, supporting device, host, and OTG modes without requiring an external transceiver. This is confirmed in Section 1.3.3 of the SPMS375E datasheet and simplifies PCB layout and reduces BOM cost compared to microcontrollers requiring external USB PHY components.

How much hibernate-capable memory does the TM4C123GH6PGETR provide?

The TM4C123GH6PGETR provides 2 KB of battery-backed SRAM accessible only in hibernate mode, along with a dedicated real-time clock (RTC) and VBAT monitoring circuitry. This memory retains data across full power cycles when backed by a coin-cell or supercapacitor, as detailed in Section 7.3.6 of the SPMS375E datasheet.

What debug interfaces are supported by the TM4C123GH6PGETR?

The TM4C123GH6PGETR supports both JTAG and 2-wire Serial Wire Debug (SWD) interfaces using dedicated pins (TCK, TMS, TDI, TDO, nSRST). SWD is enabled by default and offers reduced pin count versus JTAG, while maintaining full debug visibility including breakpoints, watchpoints, and register access via TI's Code Composer Studio or third-party OpenOCD tools.

Is the TM4C123GH6PGETR qualified for industrial temperature range operation?

Yes, the TM4C123GH6PGETR is rated for operation from –40°C to +85°C ambient temperature, meeting industrial-grade reliability requirements. This rating is specified in Section 1.3.8 (Packaging and Temperature) of the SPMS375E datasheet and validated across manufacturing lots per TI's production test flow.