Texas Instruments TM4C123BE6PMI

Overview

TM4C123BE6PM 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-channel 12-bit ADC, two CAN 2.0A/B controllers, and up to 69 GPIOs in a 64-pin LQFP package. It operates at 80 MHz and supports hibernation mode for ultra-low-power operation in battery-powered embedded systems.

For engineers reviewing the TM4C123BE6PM datasheet, TM4C123BE6PM pinout, TM4C123BE6PM application, or TM4C123BE6PM equivalent, key selection criteria include its integrated USB PHY, dual CAN interfaces, hibernation module with RTC and battery-backed memory, and support for TivaWare™ software stack in industrial control and connected sensor node designs.

Technical Context

The TM4C123BE6PM implements a full-featured ARM Cortex-M4F core with single-precision floating-point unit (FPU), NVIC with 68 interrupt lines, and memory protection unit (MPU). Its system-level integration includes a programmable clock tree with PLL, multiple low-power modes (sleep, deep-sleep, hibernate), and on-chip ROM bootloader supporting UART, USB, and I²C firmware updates.

Peripheral subsystems are tightly coupled via the μDMA controller supporting 32 channels with scatter-gather capability, enabling zero-CPU-overhead transfers between ADC, UART, CAN, and memory. The analog subsystem integrates an 8-channel 12-bit ADC with hardware averaging and digital comparators, while the motion control suite includes PWM generators with fault protection and quadrature encoder inputs.

Key Specifications

Pinout & Package

TM4C123BE6PM is housed in a 64-pin LQFP package with exposed thermal pad (Pb-free, RoHS-compliant). Pin assignments follow TI's standard Tiva C Series layout, supporting multiplexed peripheral functions per GPIO.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F407VGT6 and MSP432P401RIPZ, the TM4C123BE6PM uniquely balances 80 MHz real-time performance, dual CAN, integrated USB PHY, and hibernate-mode power efficiency - making it optimal for cost-sensitive, battery-aware industrial gateways requiring mixed-protocol connectivity.

Availability

TM4C123BE6PM is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive diagnostic tools, and smart building controllers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TM4C123BE6PM 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 delivering reliable, production-qualified microcontrollers for industrial and automotive markets.

The TM4C123BE6PM belongs to TI's Tiva C Series, designed specifically for cost-effective, high-integration embedded control applications requiring USB, CAN, analog sensing, and low-power operation in harsh environments.

FAQ

What is the maximum operating frequency of the TM4C123BE6PM?

The TM4C123BE6PM operates at a maximum system clock frequency of 80 MHz, achieved using its internal PLL with an external crystal or oscillator input. This frequency applies to the ARM Cortex-M4F core, bus matrix, and most peripherals. All timing specifications in the datasheet-including ADC sampling rate, UART baud generation, and PWM resolution-are validated at this 80 MHz condition. The TM4C123BE6PM does not support overclocking beyond 80 MHz under standard operating conditions.

Does the TM4C123BE6PM include an integrated USB physical layer (PHY)?

Yes, the TM4C123BE6PM includes a fully integrated USB 2.0 full-speed PHY compliant with USB specification revision 2.0. This eliminates the need for an external USB transceiver in device, host, or OTG configurations. The PHY supports both 1.5 Mbps (low-speed) and 12 Mbps (full-speed) signaling and is directly accessible via the USB0 base address. The TM4C123BE6PM USB module also includes dedicated endpoints, FIFOs, and descriptors managed by the USB library in TivaWare™.

How many CAN controllers does the TM4C123BE6PM support?

The TM4C123BE6PM integrates two independent CAN 2.0A/B controllers (CAN0 and CAN1), each with its own message RAM, filter masks, and transmit/receive FIFOs. Both controllers support bit rates up to 1 Mbps and operate concurrently without resource contention. This dual-CAN capability enables applications such as gateway bridging between separate CAN networks or redundancy in safety-critical communication paths. The TM4C123BE6PM pinout allocates dedicated CANRX/CANTX pins for each controller on separate GPIO ports.

What low-power modes are supported by the TM4C123BE6PM?

The TM4C123BE6PM supports Sleep, Deep-Sleep, and Hibernate modes. Hibernate mode draws just 1.6 µA while retaining the real-time clock, hibernate memory (2 KB), and wake-up sources-making it ideal for battery-powered applications. Deep-Sleep disables the main oscillator but retains SRAM and register state. Sleep mode stops the CPU clock while keeping peripherals active. All modes are entered and exited via the System Control Block (SCB) and controlled through the Hibernation Module registers. The TM4C123BE6PM datasheet specifies wake-up latency and current draw for each mode under defined voltage and temperature conditions.

Is there on-chip EEPROM in the TM4C123BE6PM?

Yes, the TM4C123BE6PM includes 2 KB of on-chip EEPROM memory mapped to a dedicated address space and accessible via standard read/write instructions. This EEPROM supports byte, half-word, and word writes with automatic erase-before-write, and endurance is rated for 100,000 write cycles. It is commonly used for storing calibration data, device identifiers, or user configuration that must survive power loss. Unlike Flash, the TM4C123BE6PM EEPROM can be rewritten in-system without halting execution or requiring special programming sequences.