Texas Instruments TM4C123BH6NMRI7

Overview

TM4C123BH6NMRI7 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 outputs, 12-bit ADC (1MSPS), and dual CAN 2.0A/B controllers - deployed in industrial motor control, smart sensor hubs, and embedded HMI systems.

For engineers reviewing the TM4C123BH6NMRI7 datasheet, TM4C123BH6NMRI7 pinout, TM4C123BH6NMRI7 application, or TM4C123BH6NMRI7 equivalent, key selection criteria include operating temperature range (–40°C to 105°C), QFP-64 package compatibility, USB device/host/OTG support, and integrated hibernation module for ultra-low-power wake-up timing.

Technical Context

The TM4C123BH6NMRI7 implements a 32-bit ARM Cortex-M4F core with hardware floating-point unit (FPU), supporting single-precision IEEE 754 arithmetic and DSP instructions. It integrates a 12-channel μDMA controller, 8× general-purpose timers (including RTC-capable), and a system-level hibernation module with battery-backed RAM and real-time clock.

Peripherals are tightly coupled via the Advanced Microcontroller Bus Architecture (AMBA) AHB/APB matrix, enabling concurrent access to flash, SRAM, and peripherals without bus contention. Clock management includes programmable PLLs, multiple internal oscillators (PIOSC, MOSC, LFIOSC), and dynamic power gating per peripheral domain.

Key Specifications

Pinout & Package

TM4C123BH6NMRI7 is housed in a 64-pin LQFP (7 mm × 7 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments follow TI's standard Tiva C Series pinout layout for mechanical and thermal compatibility across the TM4C123x family.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TM4C123GH6PM and STM32F407VGT6, the TM4C123BH6NMRI7 delivers optimal balance of integration (USB PHY, hibernation, CAN), compact 64-pin footprint, and industrial temperature support - ideal for cost-sensitive, space-constrained edge nodes requiring mixed-signal control and connectivity.

Availability

TM4C123BH6NMRI7 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor hubs, embedded HMI controllers, and USB device gateways requiring stable component supply across long-lifecycle production programs.

Supply support for TM4C123BH6NMRI7 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, delivering analog, embedded processing, and wireless technologies for industrial, automotive, and consumer applications.

The Tiva C Series - including the TM4C123BH6NMRI7 - was engineered to provide high-performance ARM Cortex-M4F microcontrollers with integrated connectivity, analog, and power management for real-time embedded systems in harsh environments.

FAQ

What is the maximum operating frequency of the TM4C123BH6NMRI7?

The TM4C123BH6NMRI7 operates at a maximum system clock frequency of 80 MHz, achieved via its integrated PLL with support for multiple clock sources including external crystals, internal oscillators, and USB SOF synchronization. This frequency is fully supported across the full industrial temperature range (–40°C to +105°C) without derating, and all peripherals remain functional at this speed.

Does the TM4C123BH6NMRI7 include an integrated USB physical layer?

Yes, the TM4C123BH6NMRI7 includes a full-speed USB 2.0 OTG controller with an integrated PHY, eliminating the need for external transceivers. It supports device, host, and OTG modes, and features dedicated VBUS sensing and ID pin inputs for automatic role detection - all implemented in silicon within the TM4C123BH6NMRI7 die.

What is the purpose of the hibernation module in the TM4C123BH6NMRI7?

The hibernation module in the TM4C123BH6NMRI7 provides ultra-low-power state retention with battery-backed RAM (256 bytes) and real-time clock functionality while consuming ≤1.7 µA. It enables rapid wake-up (<1 µs) from deep sleep triggered by external pins, RTC alarms, or USB activity - critical for battery-powered sensor nodes and energy-harvesting applications using the TM4C123BH6NMRI7.

How many analog-to-digital converter (ADC) channels does the TM4C123BH6NMRI7 support?

The TM4C123BH6NMRI7 integrates a 12-bit successive approximation register (SAR) ADC with up to 12 external input channels and a built-in temperature sensor. It supports up to 1 MSPS sampling rate, hardware oversampling (up to 64×), and four independent sample sequencers - allowing concurrent, trigger-synchronized acquisition across multiple analog sources in the TM4C123BH6NMRI7.

Is the TM4C123BH6NMRI7 pin-compatible with other TM4C123x devices?

The TM4C123BH6NMRI7 shares the same 64-pin LQFP package and pinout with other TM4C123x variants in the H6N and H6B suffix families (e.g., TM4C123GH6PM is not pin-compatible due to its 144-pin package). Pin functions are consistent across 64-pin members, enabling direct substitution where flash/SRAM requirements align - verified in TI's official TM4C123x datasheet revision SPMS370E.