Texas Instruments TM4C123BE6PMI7R

Overview

TM4C123BE6PMI7R 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, SPI, I²C). It operates at up to 80 MHz and supports -40°C to +105°C industrial temperature range in a 64-pin LQFP package. It serves as the main control unit in motor drive firmware, smart sensor nodes, and USB-connected embedded controllers.

For engineers reviewing the TM4C123BE6PMI7R datasheet, TM4C123BE6PMI7R pinout, TM4C123BE6PMI7R application, or TM4C123BE6PMI7R equivalent, key selection criteria include its integrated USB PHY, hibernation module with RTC and battery-backed memory, deterministic real-time interrupt latency (<12 cycles), and support for TivaWare™ peripheral driver library in production firmware development.

Technical Context

The TM4C123BE6PMI7R implements a full-featured ARM Cortex-M4F core with hardware floating-point unit (FPU), memory protection unit (MPU), and nested vectored interrupt controller (NVIC) supporting 64 interrupt lines. Its system-level integration includes a hibernation module with dedicated 32.768 kHz RTC oscillator, VDD3ON power mode, and battery-backed RAM for low-power wake-up states.

Peripherals are tightly coupled via the μDMA controller with 32-channel arbitration, enabling zero-CPU-overhead transfers between ADC, UART, and SRAM. Clock management uses a programmable PLL with internal precision oscillator (PIOSC) and external crystal support (4–25 MHz), delivering stable 80 MHz system clock with ±0.5% accuracy over temperature.

Key Specifications

Pinout & Package

TM4C123BE6PMI7R 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 for 64-pin variants, including dedicated USB D+/D− pins, four 16-bit GPTM blocks, and dual 12-bit ADC sample sequencers.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F407VGT6 and MSP432P401RIPZT, TM4C123BE6PMI7R uniquely balances 80 MHz real-time control, integrated USB PHY, and industrial-grade hibernation - making it optimal for cost-sensitive, USB-connected motor and sensor systems requiring guaranteed sub-10 µA sleep current and field-upgradable firmware.

Availability

TM4C123BE6PMI7R is available at Aetrix Electronics and suitable for motor control systems, USB field service tools, and smart sensor nodes requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for TM4C123BE6PMI7R 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 electronics.

The TM4C123BE6PMI7R belongs to TI's Tiva™ C Series microcontrollers, designed specifically for cost-sensitive, real-time embedded applications demanding integrated analog, USB, and low-power operation without external support components.

FAQ

What is the maximum operating frequency of the TM4C123BE6PMI7R?

The TM4C123BE6PMI7R operates at a maximum system clock frequency of 80 MHz, achieved using its internal PLL with either an external crystal (4–25 MHz) or the precision internal oscillator (PIOSC). This frequency is fully supported across the entire industrial temperature range (-40°C to +105°C) and enables deterministic execution of real-time control algorithms with sub-microsecond interrupt response.

Does the TM4C123BE6PMI7R include an integrated USB physical layer?

Yes, the TM4C123BE6PMI7R integrates a full-speed USB 2.0 OTG physical layer (PHY) with internal termination and voltage regulation. This eliminates the need for external USB transceivers, reduces PCB footprint, and simplifies certification for USB-compliant designs. The USB module supports device, host, and OTG modes and is fully supported by TI's TivaWare™ USB stack.

What low-power modes does the TM4C123BE6PMI7R support, and what is the lowest achievable current?

The TM4C123BE6PMI7R supports multiple low-power modes, including Sleep, Deep-Sleep, and Hibernation. In Hibernation mode with RTC active and 2 KB SRAM retained, typical current consumption is less than 1.1 µA at 3.3 V and 25°C. This mode maintains timekeeping and critical state during main power loss and enables wake-up via RTC alarm or external pin interrupt within 5 µs.

How much on-chip memory does the TM4C123BE6PMI7R provide, and what types are included?

The TM4C123BE6PMI7R includes 256 KB of on-chip flash memory for program storage, 32 KB of general-purpose SRAM, 8 KB of ROM containing TivaWare™ peripheral drivers and boot loader, and 2 KB of battery-backed SRAM accessible in Hibernation mode. All memory blocks are accessible via the AHB bus with zero-wait-state operation at 80 MHz.

Is the TM4C123BE6PMI7R pin-compatible with other Tiva C Series microcontrollers?

The TM4C123BE6PMI7R shares the same 64-pin LQFP package and pinout with other TM4C123x devices in the same package variant (e.g., TM4C123GH6PM), enabling hardware reuse across performance tiers. However, it is not pin-compatible with TM4C129x series or different package options (e.g., BGA), and peripheral mapping must be verified against the specific device's datasheet revision.