Texas Instruments TM4C123BH6PZI7

Overview

TM4C123BH6PZI7 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, 2× QEI, 12-bit ADC (1MSPS), and dual CAN 2.0A/B controllers - deployed in industrial motor control, smart sensor nodes, and USB-connected embedded gateways.

For engineers reviewing the TM4C123BH6PZI7 datasheet, TM4C123BH6PZI7 pinout, TM4C123BH6PZI7 application, or TM4C123BH6PZI7 equivalent, key selection criteria include its 80 MHz operation, hibernation module with RTC and battery-backed memory, JTAG/SW-DP debug interface, and -40°C to +105°C industrial temperature rating.

Technical Context

The TM4C123BH6PZI7 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, vector table relocation, and low-latency exception handling for deterministic real-time response.

System-level integration includes a programmable clock tree with PLL, multiple power domains (run/sleep/hibernate), μDMA controller with 32 channels, and peripheral-specific clock gating - enabling precise power/performance trade-offs in battery-constrained or thermally sensitive deployments.

Key Specifications

Pinout & Package

LQFP-100 package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad - provides mechanical stability, thermal dissipation, and compatibility with standard PCB assembly processes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TM4C123BH6PZI7, TM4C1294NCPDT offers greater compute headroom and Ethernet but sacrifices hibernation efficiency; STM32F407VGT6 delivers higher clock speed and memory but increases BOM cost and design complexity due to external USB and power management components.

Availability

TM4C123BH6PZI7 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor gateways, and USB human interface devices requiring stable component supply across long production lifecycles.

Supply support for TM4C123BH6PZI7 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 markets.

The Tiva C Series - including TM4C123BH6PZI7 - was designed specifically for cost-sensitive, real-time embedded applications requiring integrated analog, motion control, and connectivity peripherals in a single chip.

FAQ

What is the maximum operating frequency of the TM4C123BH6PZI7?

The TM4C123BH6PZI7 operates at a maximum system clock frequency of 80 MHz, achieved via its internal PLL that accepts a 4–25 MHz crystal or external clock source. This frequency is fully supported across the full industrial temperature range (-40°C to +105°C) and enables deterministic execution of real-time control tasks. The TM4C123BH6PZI7 maintains timing compliance without derating under worst-case voltage and temperature conditions specified in the datasheet.

Does the TM4C123BH6PZI7 include an integrated USB physical layer?

Yes, the TM4C123BH6PZI7 integrates a full-speed USB 2.0 OTG physical layer (PHY) with VBUS sensing and ID pin detection. This eliminates the need for an external USB transceiver and simplifies layout and BOM. The TM4C123BH6PZI7 supports USB device, host, and OTG roles, and its ROM bootloader enables firmware updates over USB without requiring a debugger or external programming hardware.

What debug interfaces does the TM4C123BH6PZI7 support?

The TM4C123BH6PZI7 supports both JTAG and ARM Serial Wire Debug (SWD) interfaces through dedicated pins (TCK, TMS, TDI, TDO, nTRST, SWDIO, SWCLK). It implements the CoreSight debug architecture with breakpoints, watchpoints, and real-time trace via the TPIU. These interfaces are fully compatible with TI's Code Composer Studio and third-party tools like Segger J-Link and OpenOCD for development and production testing of the TM4C123BH6PZI7.

How much battery-backed memory does the TM4C123BH6PZI7 provide in hibernate mode?

The TM4C123BH6PZI7 provides 2 KB of battery-backed SRAM accessible during hibernate mode, retained by an external coin-cell or supercapacitor connected to the VBAT pin. This memory remains powered and readable/writable while the rest of the device consumes less than 1 µA. The TM4C123BH6PZI7 also includes a 32-bit real-time counter (RTC) and alarm functionality within the hibernation module - enabling time-stamped wake-up events without main power.

Is the TM4C123BH6PZI7 pin-compatible with other Tiva C Series microcontrollers?

No, the TM4C123BH6PZI7 is not pin-compatible with other Tiva C Series devices such as the TM4C129x family. Its LQFP-100 package has a unique pin assignment optimized for its peripheral mix (e.g., dual CAN, QEI, USB PHY). While software abstraction layers (TivaWare) provide some portability, hardware redesign is required when migrating to different Tiva families. Pin compatibility must be verified per-package datasheet - the TM4C123BH6PZI7 footprint and signal mapping are specific to this variant.