Texas Instruments TM4C123BH6PZI7R

Overview

TM4C123BH6PZI7R 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 (up to 1MSPS), PWM, UART, I²C, SPI, and USB 2.0 device interface. It operates at 80 MHz, supports hibernation mode with RTC and battery-backed memory, and targets real-time embedded control in industrial automation and motor drive systems.

For engineers reviewing the TM4C123BH6PZI7R datasheet, TM4C123BH6PZI7R pinout, TM4C123BH6PZI7R application, or TM4C123BH6PZI7R equivalent, key selection considerations include its 80 MHz Cortex-M4F core with FPU, 100-pin LQFP package with 69 GPIOs, USB device capability, hibernation power management, and integrated 12-bit ADC with hardware averaging.

Technical Context

The TM4C123BH6PZI7R implements a full-featured ARM Cortex-M4F core with single-precision floating-point unit and NVIC supporting up to 80 interrupts. Its system integration includes ROM-based bootloader, configurable clock tree with PLL, and power management with deep-sleep and hibernate modes enabled via HIB module.

Peripherals are tightly coupled to the μDMA controller for zero-CPU-overhead transfers; analog subsystem includes four 12-bit ADC sample sequencers with programmable trigger sources and digital comparators, while timing resources comprise six 32-bit general-purpose timers (some configurable as 16-bit PWM pairs) and two watchdog timers.

Key Specifications

Pinout & Package

TM4C123BH6PZI7R is housed in a 100-pin LQFP package (PZ suffix), with exposed thermal pad on underside for enhanced thermal dissipation in industrial environments. Pinout supports multiplexed peripheral functions across GPIO banks A–K, with dedicated JTAG/SWD debug pins (TCK, TMS, TDI, TDO, nSRST) and USB D+/D− lines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F407VGT6 and RP2040, the TM4C123BH6PZI7R offers unique value in USB-integrated, hibernate-optimized industrial control - delivering verified sub-µA retention, on-die USB PHY, and production-ready TivaWare driver library support without requiring external analog or power management ICs.

Availability

TM4C123BH6PZI7R is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, PLC I/O modules, and USB HID interface designs requiring stable component supply and long-term manufacturability.

Supply support for TM4C123BH6PZI7R 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 industrial and automotive qualification experience.

The TM4C123x series was designed specifically for real-time industrial control applications demanding robust analog integration, deterministic timing, low-power hibernation, and USB device connectivity - all in a single-chip solution.

FAQ

What is the maximum operating frequency of the TM4C123BH6PZI7R?

The TM4C123BH6PZI7R operates at a maximum system clock frequency of 80 MHz, achieved using its internal PLL with an external 16 MHz crystal. This frequency is sustained across the full industrial temperature range (–40°C to +105°C) and supports deterministic real-time execution of control algorithms and communication stacks in the TM4C123BH6PZI7R.

Does the TM4C123BH6PZI7R include an integrated USB physical layer?

Yes, the TM4C123BH6PZI7R integrates a full-speed USB 2.0 physical layer (PHY) with dedicated D+ and D− pins, VBUS sensing, and ID detection. This eliminates the need for an external USB transceiver and enables direct USB device functionality - such as CDC, HID, or MSC class implementations - directly from the TM4C123BH6PZI7R without additional components.

How much SRAM and flash memory does the TM4C123BH6PZI7R provide?

The TM4C123BH6PZI7R includes 32 KB of on-chip SRAM for runtime variables and stack usage, and 256 KB of on-chip flash memory for program storage and non-volatile data. Additionally, it features 2 KB of EEPROM for wear-levelled parameter storage - all accessible without external memory controllers in the TM4C123BH6PZI7R.

What low-power modes are supported by the TM4C123BH6PZI7R?

The TM4C123BH6PZI7R supports multiple low-power modes: Sleep (CPU stopped, peripherals active), Deep-Sleep (system clock gated, SRAM retained), and Hibernate (only HIB module and RTC active, ≤1.1 µA typical). Hibernate mode retains 2 KB of SRAM and maintains RTC time using VBAT - a capability confirmed in the TM4C123BH6PZI7R datasheet and critical for battery-backed applications.

Is the TM4C123BH6PZI7R pin-compatible with other Tiva C-series microcontrollers?

No, the TM4C123BH6PZI7R is not universally pin-compatible across the Tiva C-series. While it shares the 100-pin LQFP (PZ) package with some variants like TM4C123GH6PZ, differences in peripheral mapping, power pin allocation, and function-specific pin assignments mean board-level compatibility requires verification against each specific variant's datasheet - including the TM4C123BH6PZI7R.