Texas Instruments TM4C123AE6PMI

Overview

TM4C123AE6PMI 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 +85°C) in a 64-pin LQFP package. It serves as a main system controller in motor control, industrial HMI, and sensor gateway applications.

For engineers reviewing the TM4C123AE6PMI datasheet, TM4C123AE6PMI pinout, TM4C123AE6PMI application, or TM4C123AE6PMI equivalent, key selection criteria include its 80 MHz Cortex-M4F core with FPU, on-chip USB PHY, 12-bit ADC with hardware averaging, deterministic real-time interrupt latency, and support for TivaWare™ software stack and TI's Code Composer Studio™ IDE.

Technical Context

The TM4C123AE6PMI integrates a single-core ARM Cortex-M4F processor with hardware floating-point unit and NVIC supporting up to 80 interrupts with configurable priority grouping. Its memory subsystem includes 256 KB of on-chip Flash with ECC protection, 32 KB SRAM, and 2 KB EEPROM-all accessible via AHB/APB buses with zero-wait-state operation at 80 MHz.

Peripherals are tightly coupled to the core via the μDMA controller (32-channel), enabling autonomous data movement between ADC, UART, SSI, and memory without CPU intervention. System-level features include programmable clock gating, multiple low-power sleep modes (with wake-on-event), and integrated analog comparators with reference voltage generator.

Key Specifications

Pinout & Package

TM4C123AE6PMI is housed in a 64-pin LQFP package with exposed thermal pad (Pb-free, RoHS-compliant). Pin assignments follow TI's standard Tiva C Series pin mapping, with dedicated VDD/VSS pairs per power domain, separate analog/digital ground pins, and configurable GPIOs supporting multiple peripheral functions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F407VGT6 and RP2040, the TM4C123AE6PMI uniquely balances industrial-grade analog integration, native USB 2.0 OTG, deterministic real-time performance, and mature toolchain support - making it optimal for mid-tier embedded control where reliability, peripheral richness, and development velocity matter.

Availability

TM4C123AE6PMI is available at Aetrix Electronics and suitable for industrial motor control, smart sensor gateways, HMI panels, and USB-capable PLC modules requiring stable component supply across multi-year production cycles.

Supply support for TM4C123AE6PMI 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 wireless technologies with over 90 years of innovation in industrial, automotive, and communications markets.

The TM4C123AE6PMI belongs to TI's Tiva™ C Series microcontroller family, designed specifically for cost-sensitive, real-time industrial and consumer applications requiring rich analog integration, USB connectivity, and deterministic execution - all within a single-chip solution.

FAQ

What is the maximum operating frequency of the TM4C123AE6PMI?

The TM4C123AE6PMI operates at a maximum system clock frequency of 80 MHz. This is achieved using the internal PLL with an external crystal oscillator (typically 16 MHz) or an internal precision oscillator. The 80 MHz clock feeds the Cortex-M4F core, memory subsystem, and all peripherals, enabling deterministic real-time performance for time-critical tasks such as motor control and sensor sampling. All timing specifications in the TM4C123AE6PMI datasheet assume this maximum frequency.

Does the TM4C123AE6PMI include an integrated USB physical layer (PHY)?

Yes, the TM4C123AE6PMI includes a fully integrated USB 2.0 On-The-Go (OTG) PHY with VBUS sensing and ID pin detection. This eliminates the need for an external USB transceiver IC and simplifies board layout, BOM count, and EMI filtering. The integrated PHY supports both device and host roles, and is compliant with USB 2.0 Full-Speed (12 Mbps) and Low-Speed (1.5 Mbps) signaling standards as specified in the TM4C123AE6PMI datasheet.

How much on-chip memory does the TM4C123AE6PMI provide?

The TM4C123AE6PMI provides 256 KB of on-chip Flash memory with error-correcting code (ECC), 32 KB of SRAM with parity checking, and 2 KB of EEPROM. The Flash supports zero-wait-state execution at 80 MHz, and the EEPROM is endurance-rated for 100,000 write cycles. These memory resources are mapped into the ARM Cortex-M4F address space and accessible via AHB and APB buses, enabling efficient code execution and data storage for industrial firmware applications.

What analog peripherals are integrated into the TM4C123AE6PMI?

The TM4C123AE6PMI integrates a 12-bit, 1 MSPS analog-to-digital converter (ADC) with 12 input channels, hardware sample averaging (up to 64 samples), and an internal temperature sensor. It also includes two analog comparators with programmable reference voltage generators and hysteresis control. These analog features are designed for direct interfacing with industrial sensors, motor current feedback, and thermal monitoring without external signal conditioning components.

Is the TM4C123AE6PMI supported by Texas Instruments' official software development tools?

Yes, the TM4C123AE6PMI is fully supported by Texas Instruments' TivaWare™ Peripheral Driver Library, Code Composer Studio™ IDE, and TI's Uniflash programming utility. It is also compatible with open-source tools including GCC-based Arm Embedded Toolchain and OpenOCD for debugging. TI provides reference designs, application notes, and example projects specifically validated for the TM4C123AE6PMI, ensuring rapid development and production-ready firmware deployment.