Texas Instruments TM4C123BH6PGEI7

Overview

TM4C123BH6PGEI7 from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 256 KB Flash, 32 KB SRAM, and integrated peripherals including dual 12-bit ADCs (1 MSPS), 8 UARTs, 4 SPI, 4 I²C, USB 2.0 OTG, and PWM-capable timers - deployed in industrial motor control, smart sensor nodes, and USB-connected embedded gateways.

For engineers reviewing the TM4C123BH6PGEI7 datasheet, TM4C123BH6PGEI7 pinout, TM4C123BH6PGEI7 application, or TM4C123BH6PGEI7 equivalent, key selection criteria include its 80 MHz CPU clock, -40°C to +105°C industrial temperature rating, 64-pin LQFP package with 49 GPIOs, USB device/host/OTG support, and integrated hibernation module for ultra-low-power wake-up scenarios.

Technical Context

The TM4C123BH6PGEI7 integrates a single-core ARM Cortex-M4F processor with hardware floating-point unit (FPU), memory protection unit (MPU), and nested vectored interrupt controller (NVIC) - enabling deterministic real-time execution and secure task isolation. It supports Thumb-2 instruction set and delivers up to 125 DMIPS at 80 MHz.

System-level integration includes a programmable system clock with PLL, multiple low-power modes (sleep, deep-sleep, hibernate), and on-chip voltage regulation. Its hibernation module features battery-backed RTC, 2 KB hibernate RAM, and external wake-up capability via GPIO or RTC match - all operating from a dedicated VBAT supply.

Key Specifications

Pinout & Package

TM4C123BH6PGEI7 uses a 64-pin LQFP package with exposed thermal pad (PG suffix). Pin functions are configurable via GPIO AFSEL registers and supported by full JTAG/SWD debug access.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F407VGT6 and RP2040, the TM4C123BH6PGEI7 uniquely combines USB OTG with integrated PHY, hibernate mode under 1.5 µA, and industrial temperature rating - making it optimal for battery-backed field devices requiring USB connectivity and long-term reliability.

Availability

TM4C123BH6PGEI7 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor gateways, USB human interface devices, and low-power remote monitors requiring stable component supply and long-lifecycle support.

Supply support for TM4C123BH6PGEI7 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, embedded processing, and wireless technologies since 1930.

The TM4C123 family was designed specifically for cost-sensitive, high-integration industrial and automotive applications - emphasizing USB connectivity, low-power hibernation, and robust analog/motor control peripherals.

FAQ

What is the maximum operating frequency of the TM4C123BH6PGEI7?

The TM4C123BH6PGEI7 operates at a maximum CPU clock frequency of 80 MHz, achieved using its on-chip PLL with external crystal or internal oscillator input. This frequency is fully supported across the full industrial temperature range (-40°C to +105°C), and the device delivers 125 DMIPS of performance with its ARM Cortex-M4F core. The TM4C123BH6PGEI7 maintains timing compliance without derating under worst-case voltage and temperature conditions.

Does the TM4C123BH6PGEI7 support USB host functionality?

Yes, the TM4C123BH6PGEI7 supports full USB 2.0 On-The-Go (OTG) functionality, including device, host, and OTG roles. Its integrated USB PHY eliminates the need for external transceivers, and the USB controller supports up to 12 endpoints with DMA acceleration. The TM4C123BH6PGEI7 can enumerate as a USB HID device or act as a USB host for MSC-class peripherals such as flash drives - all managed by TI's TivaWare USB library.

How much SRAM and Flash memory does the TM4C123BH6PGEI7 include?

The TM4C123BH6PGEI7 integrates 32 KB of on-chip SRAM and 256 KB of single-cycle Flash memory with prefetch buffer and branch prediction. The Flash supports in-application programming (IAP) and has error correction coding (ECC) for enhanced reliability. The SRAM is partitioned into contiguous blocks accessible by CPU and μDMA, enabling efficient buffer management for communication stacks and real-time control buffers in the TM4C123BH6PGEI7.

What low-power modes are available on the TM4C123BH6PGEI7?

The TM4C123BH6PGEI7 offers four low-power modes: Sleep, Deep-Sleep, Hibernate, and Shutdown. Hibernate mode draws less than 1.5 µA while retaining RTC operation, 2 KB of hibernate RAM, and wake-up capability via GPIO or RTC match. All modes are controlled via the system control block (SCB) and supported by the hibernation module - making the TM4C123BH6PGEI7 suitable for battery-powered applications requiring multi-year operation.

Is the TM4C123BH6PGEI7 pin-compatible with other TM4C123 variants?

The TM4C123BH6PGEI7 is pin-compatible with other TM4C123x devices in the same 64-pin LQFP package (e.g., TM4C123GH6PGE), differing only in Flash size, temperature grade, or factory-programmed features. However, it is not pin-compatible with TM4C123x devices in different packages (e.g., QFN or BGA) or with TM4C129x series. Always verify peripheral mapping and clock configuration when migrating - the TM4C123BH6PGEI7 shares identical pinout and electrical characteristics within its PG package family.