Texas Instruments TM4C1231H6PGEI7

Overview

TM4C1231H6PGEI7 from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 256 KB flash, 32 KB SRAM, and integrated analog peripherals including 12-bit ADC (1MSPS, 12 channels), two UARTs, two I²C, four SPI, and USB 2.0 device interface - deployed in industrial motor control, sensor hubs, and smart metering systems.

For engineers reviewing the TM4C1231H6PGEI7 datasheet, TM4C1231H6PGEI7 pinout, TM4C1231H6PGEI7 application, or TM4C1231H6PGEI7 equivalent, key selection criteria include its -40°C to +105°C industrial temperature rating, 80 MHz CPU clock, hibernation module with RTC and battery-backed memory, and full JTAG/SWD debug support.

Technical Context

The TM4C1231H6PGEI7 integrates a single-core ARM Cortex-M4F processor with hardware floating-point unit (FPU), memory protection unit (MPU), and nested vectored interrupt controller (NVIC). It supports Thumb-2 instruction set and delivers deterministic real-time performance for closed-loop control tasks.

Its system-level integration includes μDMA controller (32-channel), hibernation module with VBAT backup, and peripheral-specific clock gating. All analog and digital peripherals are register-mapped into a unified AHB/APB bus architecture with configurable GPIO commit control and pad biasing.

Key Specifications

Pinout & Package

TM4C1231H6PGEI7 uses a 144-pin LQFP package (20 mm × 20 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per TI SPMS338E datasheet Section 1.4 and Table 1-1 (Pin Assignments).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TM4C123GH6PM and STM32F407VGT6, the TM4C1231H6PGEI7 uniquely combines USB 2.0 device PHY, hibernation-optimized power architecture, and industrial temperature grade in a single 144-pin LQFP package - reducing system-level component count and enabling seamless power-loss recovery.

Availability

TM4C1231H6PGEI7 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, wireless sensor hubs, and automotive body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TM4C1231H6PGEI7 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 Tiva C Series - including the TM4C1231H6PGEI7 - was designed specifically for cost-sensitive, real-time embedded applications demanding integrated analog peripherals, low-power hibernation, and robust debug infrastructure.

FAQ

What is the maximum operating frequency of the TM4C1231H6PGEI7?

The TM4C1231H6PGEI7 operates at a maximum CPU clock frequency of 80 MHz, achieved using its internal PLL with input from either the internal precision oscillator (±1% accuracy) or an external crystal. This frequency is fully supported across the entire -40°C to +105°C industrial temperature range, and all peripherals are synchronized to this clock domain without throttling.

Does the TM4C1231H6PGEI7 include a hardware floating-point unit?

Yes, the TM4C1231H6PGEI7 integrates a full IEEE 754-compliant single-precision floating-point unit (FPU) as part of its ARM Cortex-M4F core. This FPU accelerates trigonometric, exponential, and matrix operations used in motor control, sensor fusion, and digital power supply algorithms - eliminating software emulation overhead.

Can the TM4C1231H6PGEI7 retain real-time clock and memory during main power loss?

Yes, the TM4C1231H6PGEI7 features a dedicated hibernation module that supports VBAT backup. When powered by a coin cell or supercapacitor on the VBAT pin, it maintains the real-time clock (RTC), preserves up to 2 KB of hibernate RAM, and retains wake-up configuration - enabling full state recovery after main power restoration.

How many UART interfaces does the TM4C1231H6PGEI7 support?

The TM4C1231H6PGEI7 supports four independent UART modules (UART0–UART3), each with full modem handshake signals, ISO 7816 smart-card support, and infrared (SIR) encoding. UART0 and UART1 also support automatic baud-rate detection, making them ideal for legacy industrial equipment interoperability.

Is the TM4C1231H6PGEI7 pin-compatible with other Tiva C Series microcontrollers?

No, the TM4C1231H6PGEI7 is not pin-compatible with other Tiva C Series variants such as the TM4C123GH6PM (64-pin) or TM4C1294NCPDT (128-pin BGA). Its 144-pin LQFP package and specific peripheral mapping - including integrated USB PHY pins - are unique to this variant and require dedicated PCB layout.