Texas Instruments TM4C123GE6PZIR

Overview

TM4C123GE6PZIR from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 256 KB flash, 32 KB SRAM, integrated USB 2.0 OTG, 12-bit ADC (1MSPS), and dual CAN 2.0A/B controllers - deployed in industrial motor control, smart sensor nodes, and USB-connected embedded gateways.

For engineers reviewing the TM4C123GE6PZIR datasheet, TM4C123GE6PZIR pinout, TM4C123GE6PZIR application, or TM4C123GE6PZIR equivalent, key selection criteria include its 80 MHz CPU clock, hibernation module with RTC and battery-backed memory, 12-channel μDMA, and support for TivaWare C Series software stack.

Technical Context

The TM4C123GE6PZIR integrates a single-core ARM Cortex-M4F processor with hardware floating-point unit (FPU), memory protection unit (MPU), and nested vectored interrupt controller (NVIC). It supports Thumb-2 instruction set and delivers deterministic real-time response with interrupt latency as low as 12 cycles.

System-level integration includes a programmable system clock (up to 80 MHz via PLL), on-chip voltage regulator, power gating for sleep modes (Hibernate, Deep Sleep, Sleep), and dedicated hibernation module with RTC, battery-backed RAM, and wake-on-external-event capability.

Key Specifications

Pinout & Package

TM4C123GE6PZIR is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments are defined per TI SPMS374E 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 RP2040, the TM4C123GE6PZIR provides balanced integration of USB OTG with PHY, dual CAN, hibernation with RTC, and industrial-grade analog - making it optimal for resource-constrained, mixed-signal, battery-aware embedded systems requiring protocol flexibility and deterministic real-time performance.

Availability

TM4C123GE6PZIR is available at Aetrix Electronics and suitable for industrial motor control, smart sensor gateways, USB human interface devices, and low-power industrial monitors requiring stable component supply and long-term lifecycle support.

Supply support for TM4C123GE6PZIR 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 TM4C123 family was designed for cost-sensitive, real-time embedded applications demanding robust analog integration, USB connectivity, and low-power operation - targeting industrial automation, building control, and portable instrumentation.

FAQ

What is the maximum operating frequency of the TM4C123GE6PZIR?

The TM4C123GE6PZIR operates at a maximum CPU frequency of 80 MHz using its internal PLL with an external crystal or oscillator input. This frequency is achievable across the full industrial temperature range (-40°C to +105°C) and supports deterministic real-time execution for control loops and communication stacks. The TM4C123GE6PZIR's clock tree includes multiple dividers and sources to maintain timing integrity under varying load conditions.

Does the TM4C123GE6PZIR include an integrated USB physical layer (PHY)?

Yes, the TM4C123GE6PZIR integrates a full-speed USB 2.0 OTG PHY, eliminating the need for an external transceiver. This enables direct USB device or host functionality using only passive termination components. The TM4C123GE6PZIR supports standard USB classes including CDC, HID, and MSC out of the box with TivaWare driver libraries, reducing BOM cost and PCB layout complexity.

How much battery-backed memory does the TM4C123GE6PZIR provide in hibernate mode?

The TM4C123GE6PZIR provides 2 KB of battery-backed RAM within its hibernation module, accessible while main power is removed and VBAT is active. This memory retains critical variables, calibration data, and RTC configuration during extended power loss. The TM4C123GE6PZIR also includes a dedicated 32.768 kHz RTC oscillator and supports wake-up events from GPIO, RTC match, or external interrupts - all while consuming less than 1.5 µA.

What analog peripherals are integrated into the TM4C123GE6PZIR?

The TM4C123GE6PZIR integrates a 12-bit, 1 MSPS analog-to-digital converter (ADC) with 12 input channels, hardware sample averaging (up to 64x), and four independent sample sequencers. It also includes an internal temperature sensor and digital comparators. These analog resources are directly accessible by the μDMA controller, enabling autonomous data acquisition without CPU intervention - a key capability for the TM4C123GE6PZIR in sensor-rich industrial applications.

Is the TM4C123GE6PZIR pin-compatible with other devices in the TM4C123 family?

Yes, the TM4C123GE6PZIR shares the same 100-pin LQFP package and pinout with other TM4C123x devices in the PZ suffix group (e.g., TM4C123GH6PZ, TM4C123BE6PZ), enabling drop-in replacement where flash size, SRAM, or peripheral enablement aligns. However, pin compatibility does not guarantee functional equivalence - for example, TM4C123GE6PZIR includes USB OTG and dual CAN, while lower-tier variants may omit these. Always verify peripheral enablement in the specific variant's datasheet before substitution.