Texas Instruments TM4C123BH6PZIR

Overview

TM4C123BH6PZIR 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, CAN, 8x UARTs, 2x I²C, 2x SPI, 12-bit ADC (1MSPS), PWM, and hibernation module. It operates at up to 80 MHz and supports industrial temperature range (–40°C to +105°C) in a 100-pin LQFP package.

For engineers reviewing the TM4C123BH6PZIR datasheet, TM4C123BH6PZIR pinout, TM4C123BH6PZIR application, or TM4C123BH6PZIR equivalent, key selection criteria include its integrated USB PHY, dual CAN controllers, hibernate power mode (<1.2 µA), deterministic FPU performance, and TI's TivaWare™ software support for rapid firmware development.

Technical Context

The TM4C123BH6PZIR integrates an ARM Cortex-M4F core with single-precision floating-point unit (FPU), memory protection unit (MPU), and nested vectored interrupt controller (NVIC). Its system-level architecture includes a 32-bit AHB bus matrix, μDMA controller with 32 channels, and configurable clock tree supporting multiple PLL and oscillator sources.

Peripherals are tightly coupled via APB and AHB interfaces: the 12-bit ADC supports hardware averaging and 8-sample sequencers; dual CAN modules comply with ISO 11898-1; USB controller includes on-chip PHY and supports device/host/OTG modes; hibernation module enables RTC-backed low-power operation with battery-backed RAM and wake-on-external-interrupt capability.

Key Specifications

Pinout & Package

TM4C123BH6PZIR is housed in a 100-pin LQFP package (PZ suffix), with exposed thermal pad for enhanced heat dissipation. Pin functions are defined per TI SPMS369E datasheet Rev E, Section 1.4 and Table 1-1 (Pin Assignments).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F407VGT6 and MSP432P401RIPZT, TM4C123BH6PZIR uniquely balances 80 MHz real-time control, dual CAN, integrated USB PHY, and sub-µA hibernate - making it optimal for cost-sensitive, battery-aware industrial gateways requiring robust communication and long service life.

Availability

TM4C123BH6PZIR is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, smart energy metering, and portable medical sensor hubs requiring stable component supply and long-term manufacturability.

Supply support for TM4C123BH6PZIR 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 and embedded processing solutions across industrial, automotive, and consumer markets.

The Tiva C Series - including TM4C123BH6PZIR - was designed for cost-effective, high-integration microcontroller applications demanding real-time performance, connectivity, and low-power operation in harsh environments.

FAQ

What is the maximum operating frequency of the TM4C123BH6PZIR?

The TM4C123BH6PZIR operates at a maximum system clock frequency of 80 MHz, achieved using its internal PLL with input from either the internal precision oscillator (PIOSC) or an external crystal (4–25 MHz). This frequency is fully supported across the industrial temperature range (–40°C to +105°C) and enables deterministic real-time execution of control loops and communication stacks.

Does the TM4C123BH6PZIR include an integrated USB physical layer (PHY)?

Yes, the TM4C123BH6PZIR integrates a full-speed USB 2.0 OTG physical layer, eliminating the need for an external transceiver. This built-in PHY supports device, host, and OTG modes, and is electrically compliant with USB specification requirements - confirmed in TI SPMS369E datasheet Section 14. The TM4C123BH6PZIR USB module includes dedicated VBUS sensing and ID pin logic for automatic role negotiation.

What low-power modes does the TM4C123BH6PZIR support, and what is the lowest current draw?

The TM4C123BH6PZIR supports multiple low-power states, with hibernate mode achieving ≤1.2 µA typical current draw while retaining RTC operation and 2 KB of SRAM. This mode uses the hibernation module powered by an external battery or supercapacitor, and supports wake-up via RTC alarm, external GPIO, or CAN activity - detailed in Section 7 of the SPMS369E datasheet. Deep-sleep and sleep modes offer intermediate power savings with faster wake-up latency.

How many CAN controllers are integrated into the TM4C123BH6PZIR, and what standards do they support?

The TM4C123BH6PZIR integrates two independent CAN controllers (CAN0 and CAN1), each compliant with ISO 11898-1 (CAN 2.0A/B). Each controller supports bit rates up to 1 Mbps, 32 message objects with programmable identifiers and masks, and hardware FIFO buffering. These controllers operate autonomously from the CPU, allowing concurrent communication and real-time response - verified in Section 1.3.4 and Section 19 of the SPMS369E datasheet.

Is the TM4C123BH6PZIR pin-compatible with other devices in the TM4C123x family?

Yes, the TM4C123BH6PZIR shares the same 100-pin LQFP (PZ) package and pinout with other TM4C123x variants such as TM4C123GH6PZ and TM4C123GH6PM, differing only in flash/RAM size and temperature grade. This allows direct hardware reuse across designs targeting different memory or qualification requirements - confirmed in TI's "Tiva C Series Compatibility Guide" (SW-TM4C-COMPATIBILITY-GUIDE) and SPMS369E Section 1.3.8.