Texas Instruments TM4C123BH6ZRBI7

Overview

TM4C123BH6ZRBI7 from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 256 KB flash, 32 KB SRAM, and integrated USB 2.0 OTG, PWM, ADC (12-bit, 1MSPS), and multiple serial interfaces (UART, SPI, I²C). It operates at 80 MHz and supports -40°C to 105°C industrial temperature range in a 100-pin LQFP package. It is used in motor control, industrial automation, and smart sensor nodes.

For engineers reviewing the TM4C123BH6ZRBI7 datasheet, TM4C123BH6ZRBI7 pinout, TM4C123BH6ZRBI7 application, or TM4C123BH6ZRBI7 equivalent, key selection considerations include its integrated USB PHY, hibernation module with RTC and battery-backed memory, deterministic real-time performance via NVIC and SysTick, and support for TivaWare™ software stack and TI's Code Composer Studio™ IDE.

Technical Context

The TM4C123BH6ZRBI7 implements a full-featured ARM Cortex-M4F core with hardware floating-point unit (FPU), nested vectored interrupt controller (NVIC), and memory protection unit (MPU). It integrates a hibernation module with RTC, battery-backed SRAM, and VBAT monitoring - enabling ultra-low-power wake-up from deep sleep states.

Peripherals include four 16/32-bit general-purpose timers (with PWM and capture capability), two 12-bit ADCs (each with eight sample sequencers and hardware averaging), six UARTs (one with ISO 7816 and SIR support), four SPI modules, and four I²C modules - all clocked from a flexible system clock tree with PLL and multiple internal/external sources.

Key Specifications

Pinout & Package

TM4C123BH6ZRBI7 is housed in a 100-pin LQFP (PZ) package with 0.5 mm pitch and exposed thermal pad. Pin functions are fully defined in TI's SPMS370E datasheet 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 TM4C123BH6ZRBI7 uniquely combines USB 2.0 OTG with integrated PHY, hibernation-optimized power architecture, and production-ready industrial analog peripherals - making it optimal for space-constrained, battery-aware, and USB-connected embedded controllers.

Availability

TM4C123BH6ZRBI7 is available at Aetrix Electronics and suitable for industrial motor control, smart building sensor nodes, PLC I/O modules, and USB HID devices requiring stable component supply across long-lifecycle programs.

Supply support for TM4C123BH6ZRBI7 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 connectivity technologies for industrial, automotive, and consumer markets.

The TM4C123BH6ZRBI7 belongs to TI's Tiva C Series microcontroller family, designed specifically for cost-sensitive, real-time embedded applications demanding high integration, low power, and broad software ecosystem support - especially in industrial automation and intelligent edge devices.

FAQ

What is the maximum operating frequency of the TM4C123BH6ZRBI7?

The TM4C123BH6ZRBI7 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 both the Cortex-M4F core and most peripherals, with certain modules (e.g., USB, ADC) having independent clock dividers to maintain specification compliance. The TM4C123BH6ZRBI7 maintains this performance across its full industrial temperature range (-40°C to +105°C).

Does the TM4C123BH6ZRBI7 include an integrated USB physical layer (PHY)?

Yes, the TM4C123BH6ZRBI7 integrates a full-speed USB 2.0 OTG physical layer, including differential transceivers, VBUS sensing, and ID pin detection. This eliminates the need for an external USB transceiver chip and simplifies layout and certification. The TM4C123BH6ZRBI7 supports device, host, and OTG roles using TI's USB stack in TivaWare™, and the PHY is compliant with USB 2.0 specifications for full-speed operation.

What low-power modes does the TM4C123BH6ZRBI7 support, and what is the lowest current draw?

The TM4C123BH6ZRBI7 supports five low-power modes: Sleep, Deep-Sleep, Wake-on-Rising-Edge, Shutdown, and Hibernate. In Hibernate mode, typical current consumption is 2.5 µA with RTC running and 1 KB of battery-backed SRAM retained. This mode uses the VBAT supply and maintains critical state across main power loss - a key feature distinguishing the TM4C123BH6ZRBI7 from many competing MCUs without integrated hibernation hardware.

How much on-chip memory does the TM4C123BH6ZRBI7 provide, and what types are included?

The TM4C123BH6ZRBI7 includes 256 KB of single-cycle flash memory with error correction coding (ECC), 32 KB of SRAM, 2 KB of EEPROM, and 1 KB of hibernation RAM. The flash supports read-while-write and has a 128-bit wide interface for sustained 80 MHz operation. The EEPROM is endurance-rated for 100,000 write cycles and used for non-volatile configuration storage independent of flash wear leveling - a verified capability of the TM4C123BH6ZRBI7.

Is the TM4C123BH6ZRBI7 pin-compatible with other devices in the TM4C123x family?

Yes, the TM4C123BH6ZRBI7 shares the same 100-pin LQFP (PZ) package and pinout with other TM4C123x variants including TM4C123GH6ZRBI7 and TM4C123BH6ZRB. This allows direct substitution within the same footprint for different flash/RAM configurations or temperature grades, provided peripheral usage aligns with the specific variant's feature set - a documented compatibility confirmed in TI's SPMS370E datasheet revision history and packaging section.