Texas Instruments TM4C123GH6PZIR

Overview

TM4C123GH6PZIR 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 generators, 12-bit 1MSPS ADC with 12 channels, and dual CAN 2.0A/B controllers. It operates at up to 80 MHz and supports -40°C to +105°C industrial temperature range in a 100-pin LQFP package. It serves as the main control unit in motor drives, industrial PLCs, and smart sensor nodes.

For engineers reviewing the TM4C123GH6PZIR datasheet, TM4C123GH6PZIR pinout, TM4C123GH6PZIR application, or TM4C123GH6PZIR equivalent, key selection criteria include its integrated USB PHY, hibernation module with RTC and battery-backed memory, deterministic real-time interrupt latency (<12 cycles), and support for TivaWare™ C Series software stack.

Technical Context

The TM4C123GH6PZIR integrates a single-core ARM Cortex-M4F CPU with hardware floating-point unit (FPU), 256 KB on-chip flash with error correction (ECC), and 32 KB SRAM. Its system-level integration includes a 12-channel μDMA controller, hibernation module with VBAT support, and configurable GPIOs with slew-rate control and 5-V-tolerant inputs on select pins.

Peripherals are tightly coupled via the AHB/APB bus matrix: USB 2.0 OTG with integrated PHY, two CAN 2.0A/B controllers, eight UARTs (including ISO 7816 and SIR), four I²C modules, three SPI interfaces, and analog subsystem comprising 12-bit ADC (12 ch, 1 MSPS), analog comparators, and internal temperature sensor.

Key Specifications

Pinout & Package

TM4C123GH6PZIR is housed in a 100-pin LQFP package (PZ suffix) with exposed thermal pad. Pin functions are defined across five GPIO ports (A–E), plus dedicated peripheral pins for USB, CAN, UART, I²C, SPI, ADC, PWM, and clock/reset/debug signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F407VGT6 and RA4M1, TM4C123GH6PZIR delivers unique integration of USB PHY, dual CAN, and hibernation module in a single 100-pin LQFP - reducing component count and enabling robust, low-power industrial connectivity without layout redesign.

Availability

TM4C123GH6PZIR is available at Aetrix Electronics and suitable for industrial motor control, smart building sensor hubs, and programmable logic controllers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for TM4C123GH6PZIR 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, specializing in analog, embedded processing, and wireless technologies since 1930.

The TM4C123GH6PZIR belongs to TI's Tiva™ C Series microcontroller family, designed specifically for cost-sensitive, real-time industrial and automation applications requiring integrated connectivity, deterministic timing, and extended temperature operation.

FAQ

What is the maximum operating frequency of the TM4C123GH6PZIR?

The TM4C123GH6PZIR operates at a maximum system clock frequency of 80 MHz, derived from an internal PLL that accepts input from an external crystal (4–25 MHz) or internal precision oscillator. This frequency is fully supported across the entire industrial temperature range (-40°C to +105°C) and enables deterministic real-time execution of control loops and communication stacks. The TM4C123GH6PZIR maintains timing compliance without derating under worst-case voltage and temperature conditions.

Does the TM4C123GH6PZIR include an integrated USB physical layer (PHY)?

Yes, the TM4C123GH6PZIR integrates a full-speed USB 2.0 OTG physical layer (PHY) compliant with USB specification revision 2.0. This eliminates the need for an external USB transceiver in most designs. The TM4C123GH6PZIR supports device, host, and OTG roles, and includes 1.2 kB of dedicated USB FIFO memory. USB functionality is accessible through dedicated pins (USB0VBUS, USB0ID, USB0DP, USB0DM) and is fully supported by TI's TivaWare™ USB library.

What analog features are included in the TM4C123GH6PZIR?

The TM4C123GH6PZIR includes a 12-bit successive-approximation ADC with 12 input channels, capable of 1 million samples per second (1 MSPS). It supports hardware sample averaging (up to 64x), digital comparators for threshold-triggered interrupts, and differential input mode. An internal temperature sensor and two analog comparators with programmable reference inputs are also integrated. All analog features are powered from the dedicated VDDA rail and operate independently of digital noise sources.

How does the hibernation module function in the TM4C123GH6PZIR?

The hibernation module in the TM4C123GH6PZIR enables ultra-low-power operation with retention of critical state: it maintains a real-time clock (RTC), 2 KB of battery-backed RAM, and wake-up capability via external pins or RTC alarm while drawing less than 1 µA from VBAT. The module isolates analog and digital domains during hibernation and supports graceful entry/exit sequences. This feature is essential for battery-powered industrial sensors and remote monitoring nodes where mains power may be intermittent.

Is the TM4C123GH6PZIR pin-compatible with other Tiva C Series microcontrollers?

The TM4C123GH6PZIR uses a 100-pin LQFP package (PZ) with a specific pinout defined in TI's SPMS377E datasheet. While other Tiva C Series devices like TM4C1294NCPDT share the same package outline, they are not pin-compatible due to differences in peripheral mapping, power pin placement, and signal assignment. Engineers must verify pin functions against the exact TM4C123GH6PZIR datasheet - no drop-in replacement exists within the family without PCB revision.