Texas Instruments TM4C123FH6PMT7

Overview

TM4C123FH6PMT7 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, I²C, SSI). It operates at up to 80 MHz and supports industrial temperature range (–40°C to +105°C) in a 64-pin LQFP package. It serves as a main system controller in motor drives, industrial PLCs, and smart sensors.

For engineers reviewing the TM4C123FH6PMT7 datasheet, TM4C123FH6PMT7 pinout, TM4C123FH6PMT7 application, or TM4C123FH6PMT7 equivalent, key selection considerations include its integrated USB PHY, deterministic real-time interrupt latency (<12 cycles), on-chip ROM bootloader, hardware floating-point unit, and support for TivaWare™ peripheral driver library.

Technical Context

The TM4C123FH6PMT7 integrates an ARM Cortex-M4F core with single-precision FPU, memory protection unit (MPU), and NVIC supporting 64 interrupt lines with configurable priority grouping. Its system-level integration includes a clock tree with PLL, precision internal oscillator (±1% over temperature), and power management with sleep modes (Deep Sleep, Hibernate) achieving sub-1 µA retention current.

Peripherals are tightly coupled via a 32-bit AHB bus matrix and APB bridges, enabling concurrent access to GPIO, timers, ADC, and communication modules. The μDMA controller supports 32 channels with scatter-gather capability, reducing CPU load during high-throughput data transfers such as ADC sampling or UART streaming.

Key Specifications

Pinout & Package

TM4C123FH6PMT7 is housed in a 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments follow TI's standard Tiva C Series pinout layout, supporting full peripheral remapping via GPIO AFSEL registers.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F407VGT6 and RA4M1, the TM4C123FH6PMT7 delivers optimal balance of USB integration, low-power hibernate, deterministic real-time response, and mature TivaWare ecosystem-making it preferred for resource-constrained industrial edge nodes requiring robust field firmware updates and long battery life.

Availability

TM4C123FH6PMT7 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 and long-term manufacturing continuity.

Supply support for TM4C123FH6PMT7 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 leader specializing in analog, embedded processing, and connectivity technologies, with decades of experience in industrial, automotive, and consumer applications.

The TM4C123FH6PMT7 belongs to TI's Tiva C Series microcontrollers, designed specifically for cost-sensitive, real-time industrial and automation applications requiring integrated analog, control, and communication peripherals in a single chip.

FAQ

Does the TM4C123FH6PMT7 include an integrated USB physical layer?

Yes, the TM4C123FH6PMT7 integrates a full-speed USB 2.0 OTG physical layer (PHY) with differential D+/D− lines, VBUS sensing, and ID pin support. This eliminates the need for an external USB transceiver in most device or host configurations, simplifying board design and reducing BOM cost. The USB module in the TM4C123FH6PMT7 supports CDC, HID, and MSC device classes via TI's TivaWare USB library.

What is the maximum operating temperature specification for the TM4C123FH6PMT7?

The TM4C123FH6PMT7 is rated for industrial temperature operation from –40°C to +105°C. This specification is validated across all core functions including flash programming, ADC conversion, USB communication, and PWM generation. The device maintains timing integrity and analog accuracy within this range, making it suitable for under-hood automotive subsystems and uncooled industrial enclosures.

Can the TM4C123FH6PMT7 execute code directly from RAM?

Yes, the TM4C123FH6PMT7 supports XIP (execute-in-place) from SRAM. Its memory map assigns 32 KB of on-chip SRAM starting at address 0x2000.0000, which is cacheable and accessible at full CPU speed. This capability enables dynamic firmware patching, real-time algorithm loading, and secure boot verification workflows where critical code segments must be isolated from flash memory.

How many independent PWM outputs does the TM4C123FH6PMT7 support?

The TM4C123FH6PMT7 supports up to 16 independent PWM outputs through eight 16-bit PWM generator blocks. Each generator provides two complementary outputs with programmable dead-band delay, fault input handling, and synchronous load capability. These outputs can be routed to any of 32 GPIO pins via peripheral function select registers, enabling flexible motor phase control and LED dimming configurations.

Is there a factory-programmed bootloader in the TM4C123FH6PMT7?

Yes, the TM4C123FH6PMT7 includes a ROM-resident bootloader programmed at the factory. It supports firmware updates over UART, USB, and I²C interfaces without requiring JTAG or SWD. The bootloader validates image CRC, enforces secure entry conditions, and supports both binary and TI's proprietary .bin format-enabling field upgrades and recovery without additional programming hardware.