Texas Instruments TM4C123GH6ZXRI7

Overview

TM4C123GH6ZXRI7 from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 256 KB Flash, 32 KB SRAM, and integrated peripherals including USB 2.0 OTG, 8× PWM, 2× CAN, 2× QEI, 12-bit ADC (1MSPS), and multiple UART/SPI/I²C interfaces; it operates at up to 80 MHz and supports industrial temperature range (–40°C to +85°C) in a 144-pin LQFP package for embedded control applications.

For engineers reviewing the TM4C123GH6ZXRI7 datasheet, TM4C123GH6ZXRI7 pinout, TM4C123GH6ZXRI7 application, or TM4C123GH6ZXRI7 equivalent, key selection criteria include its integrated USB PHY, deterministic real-time performance via FPU and NVIC, low-power hibernation mode with RTC and battery-backed memory, and support for TivaWare™ software ecosystem.

Technical Context

The TM4C123GH6ZXRI7 implements a full-featured ARM Cortex-M4F core with single-precision floating-point unit and 24-bit SysTick timer, enabling deterministic signal processing and motor control algorithms. Its system-level integration includes a 400 kHz I²C master/slave, 1 Mbps CAN 2.0A/B controller, and configurable μDMA supporting 32-channel arbitration across all peripherals.

On-chip analog subsystem comprises two independent 12-bit ADCs with up to 1MSPS aggregate sampling rate, hardware averaging, and eight sample sequencers - one with direct trigger from PWM generator. Power management includes six sleep modes (Sleep, Deep Sleep, Hibernate, etc.) with wake-up sources including GPIO, RTC alarm, and external interrupts.

Key Specifications

Pinout & Package

TM4C123GH6ZXRI7 is housed in a 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per TI SPMS398A datasheet Rev A (June 2014), with dedicated VDD/VSS pairs per power domain, separate analog/digital ground pins, and configurable GPIOs supporting multiple peripheral mappings.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F407VGT6 and MSP432P401RIPZT, the TM4C123GH6ZXRI7 uniquely balances USB OTG + CAN + hibernation + industrial temp rating in a single 144-pin LQFP package - making it optimal for compact, field-serviceable industrial controllers.

Availability

TM4C123GH6ZXRI7 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, USB-capable HMIs, and automotive body control modules requiring stable component supply and long-term manufacturability.

Supply support for TM4C123GH6ZXRI7 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, specializing in analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.

The TM4C123 series targets cost-sensitive, real-time embedded applications demanding integrated connectivity (USB/CAN), deterministic control (PWM/QEI), and low-power operation - especially where legacy 8-bit or 16-bit MCUs lack performance headroom.

FAQ

What is the maximum operating frequency of the TM4C123GH6ZXRI7?

The TM4C123GH6ZXRI7 operates at a maximum system clock frequency of 80 MHz, derived from an internal PLL that accepts input from the main oscillator (4–25 MHz), precision internal oscillator (PIOSC), or external clock source. This frequency is validated across the full industrial temperature range (–40°C to +85°C) and supports deterministic real-time execution of control loops and communication stacks in the TM4C123GH6ZXRI7.

Does the TM4C123GH6ZXRI7 include an integrated USB physical layer (PHY)?

Yes, the TM4C123GH6ZXRI7 integrates a full-speed USB 2.0 OTG physical layer, eliminating the need for an external transceiver. It supports device, host, and OTG roles with built-in VBUS sensing, ID pin detection, and session request protocol handling - all implemented in silicon within the TM4C123GH6ZXRI7 die.

How much on-chip memory does the TM4C123GH6ZXRI7 provide?

The TM4C123GH6ZXRI7 includes 256 KB of on-chip Flash memory for program storage, 32 KB of SRAM for runtime variables and stack, and 2 KB of EEPROM for non-volatile data retention. All memory blocks are accessible via the AHB bus with zero-wait-state operation at 80 MHz, ensuring consistent performance in the TM4C123GH6ZXRI7's real-time applications.

What low-power modes are supported by the TM4C123GH6ZXRI7?

The TM4C123GH6ZXRI7 supports six low-power modes: Sleep, Deep-Sleep, Hibernate, LP Deep-Sleep, LP Sleep, and Shutdown. Hibernate mode draws less than 1.7 µA while retaining RTC operation and 2 KB of battery-backed RAM - a key differentiator for battery-powered applications using the TM4C123GH6ZXRI7.

Is the TM4C123GH6ZXRI7 pin-compatible with other devices in the TM4C123 family?

Yes, the TM4C123GH6ZXRI7 shares identical pinout and package (144-pin LQFP) with other TM4C123xH6ZXR variants such as TM4C123GH6ZRB and TM4C123GH6ZAD, enabling drop-in replacement across Flash/RAM configurations and temperature grades - provided the target application does not rely on features exclusive to higher-grade versions.