Texas Instruments TM4C123BE6PZIR

Overview

TM4C123BE6PZIR from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 80 MHz operation, 256 KB flash, 32 KB SRAM, integrated USB 2.0 OTG, 12-bit ADC (1 MSPS), and 48 GPIOs in a 100-pin LQFP package. It serves as the main application processor in industrial control panels requiring real-time motor sequencing, analog sensor aggregation, and USB host connectivity.

For engineers reviewing the TM4C123BE6PZIR datasheet, TM4C123BE6PZIR pinout, TM4C123BE6PZIR application, or TM4C123BE6PZIR equivalent, key selection criteria include its integrated USB PHY, hibernation module with RTC and battery-backed memory, deterministic FPU-enabled math performance, and support for TivaWare peripheral driver library integration.

Technical Context

The TM4C123BE6PZIR integrates a single-core ARM Cortex-M4F with hardware floating-point unit and NVIC supporting up to 80 interrupts. Its system-level architecture includes a 400 MHz system clock derived from PLL, configurable power domains (run/sleep/hibernate), and a dedicated hibernation module with external crystal oscillator input and VBAT supply path.

Peripherals are organized into APB buses with clock gating per module: two UARTs with IrDA and ISO 7816 support, two I²C modules with 400 kHz fast-mode+, two SPI controllers, one QEI, four 16/32-bit general-purpose timers, and a 12-channel μDMA controller with scatter-gather capability.

Key Specifications

Pinout & Package

TM4C123BE6PZIR uses a 100-pin LQFP package with exposed thermal pad (EP). Pin assignments follow TI's standardized Tiva C Series pin mapping, including dedicated USB D+/D− pins (PB0/PB1), hibernation VBAT and HIB pin (PB2), and dual crystal inputs (PI0/PI1) for main and hibernate oscillators.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F407VGT6 and RP2040, the TM4C123BE6PZIR uniquely combines USB 2.0 OTG with integrated PHY, hibernate-optimized power architecture, and production-qualified industrial temperature range - making it optimal for embedded systems needing reliable USB connectivity and multi-year battery life.

Availability

TM4C123BE6PZIR is available at Aetrix Electronics and suitable for industrial motor control panels, USB-enabled data loggers, smart building HVAC nodes, programmable logic controller I/O modules, and hibernation-critical remote sensor nodes requiring stable component supply across extended product lifecycles.

Supply support for TM4C123BE6PZIR 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 communications markets.

The TM4C123BE6PZIR belongs to TI's Tiva C Series microcontrollers, designed specifically for real-time industrial control, motor drive, and sensor hub applications requiring high analog integration, deterministic timing, and robust low-power operation.

FAQ

What is the maximum operating frequency of the TM4C123BE6PZIR?

The TM4C123BE6PZIR operates at a maximum system clock frequency of 80 MHz, achieved via internal PLL multiplication of the input crystal or external clock source. This frequency is fully supported across the entire –40°C to +105°C temperature range and is validated for sustained operation under industrial thermal conditions. The TM4C123BE6PZIR maintains timing compliance for all on-chip peripherals-including USB, ADC, and timers-at this rated speed.

Does the TM4C123BE6PZIR include an integrated USB physical layer (PHY)?

Yes, the TM4C123BE6PZIR integrates a full-speed USB 2.0 OTG PHY compliant with USB specification revision 2.0. This eliminates the need for an external transceiver and supports device, host, and OTG modes directly from the MCU pins USB0DP and USB0DM. The TM4C123BE6PZIR's USB module includes endpoint buffers, descriptor handling, and suspend/resume logic fully managed in hardware.

What analog features does the TM4C123BE6PZIR provide?

The TM4C123BE6PZIR includes a 12-bit successive-approximation ADC with up to 1 MSPS sample rate, 12 input channels, hardware sample averaging (2–64 samples), and built-in temperature sensor. It also supports differential input mode and digital comparators for threshold-triggered events. No external ADC or signal conditioning IC is required for basic analog acquisition tasks in the TM4C123BE6PZIR-based design.

How does the hibernate module function in the TM4C123BE6PZIR?

The TM4C123BE6PZIR's hibernate module operates independently from the main system clock and retains functionality with only VBAT supplied (e.g., coin cell). It includes a 32.768 kHz oscillator, RTC counter/calendar, alarm interrupt, and 2 KB of battery-backed SRAM. In hibernate mode, total current draw is 1.7 µA, enabling multi-year operation in energy-constrained deployments using the TM4C123BE6PZIR.

Is the TM4C123BE6PZIR pin-compatible with other Tiva C Series MCUs?

The TM4C123BE6PZIR is not pin-compatible with other Tiva C Series variants such as TM4C123GH6PM or TM4C1294NCPDT due to differences in pin count (100-pin vs 64-pin or 128-pin), peripheral mapping, and power supply configurations. While software is largely portable within the TivaWare framework, hardware redesign is required when substituting the TM4C123BE6PZIR with any other Tiva part.