Texas Instruments TM4C123BE6PZI7R

Overview

TM4C123BE6PZI7R 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 up to 80 MHz and supports -40°C to +105°C industrial temperature range. It serves as a main control unit in motor drives, industrial PLCs, and smart sensor nodes.

For engineers reviewing the TM4C123BE6PZI7R datasheet, TM4C123BE6PZI7R pinout, TM4C123BE6PZI7R application, or TM4C123BE6PZI7R equivalent, key selection criteria include its 80-MHz Cortex-M4F core with FPU, 12-bit 1-MSPS ADC with hardware averaging, USB OTG capability, hibernation mode with RTC and battery-backed memory, and QFP-100 package compatibility with TI's TivaWare™ software stack.

Technical Context

The TM4C123BE6PZI7R implements a full-featured ARM Cortex-M4F core with single-precision floating-point unit and NVIC supporting 64 interrupt lines. Its system integration includes a programmable clock tree with PLL, power gating per peripheral, and hibernation module with dedicated 32.768-kHz RTC oscillator and 2 KB battery-backed RAM.

Peripherals are tightly coupled via the μDMA controller supporting 32-channel arbitration and scatter-gather transfers. Analog subsystem includes two independent 12-bit ADCs (each with 8 sequencers, hardware averaging, and temperature sensor input), while digital timing features four 32/64-bit general-purpose timers with PWM, capture, and RTC modes.

Key Specifications

Pinout & Package

TM4C123BE6PZI7R is housed in a 100-pin LQFP (PZ) package with exposed thermal pad. Pin functions are defined per TI SPMS366E datasheet Rev E (June 2014), including dedicated JTAG/SWD debug pins (TCK, TMS, TDI, TDO, nSRST), USB D+/D−, VDDA/VSSA analog supply pins, and GPIOs multiplexed across 16 ports (Port A–Port Q).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TM4C123BE6PZI7R, TM4C123GH6PGE offers expanded I/O and dual USB at the cost of footprint size, while STM32F407VGT6 trades integrated USB and hibernation for raw performance and memory - making TM4C123BE6PZI7R optimal for compact, USB-connected, battery-aware industrial controllers.

Availability

TM4C123BE6PZI7R is available at Aetrix Electronics and suitable for motor control systems, industrial data loggers, smart lighting controllers, and USB human interface devices requiring stable component supply across long-lifecycle production programs.

Supply support for TM4C123BE6PZI7R 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 connectivity solutions for industrial, automotive, and consumer markets.

The TM4C123x series was designed as a high-integration, low-cost ARM Cortex-M4F microcontroller family targeting industrial automation, building control, and portable instrumentation - emphasizing USB connectivity, analog precision, and ultra-low-power hibernation.

FAQ

What is the maximum operating frequency of the TM4C123BE6PZI7R?

The TM4C123BE6PZI7R operates at a maximum system 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 entire -40°C to +105°C temperature range and is used for CPU execution, bus timing, and peripheral clock derivation. The TM4C123BE6PZI7R datasheet specifies AC timing parameters (e.g., flash wait states, GPIO toggle rate) verified at this speed under industrial conditions.

Does the TM4C123BE6PZI7R include an integrated USB physical layer (PHY)?

Yes, the TM4C123BE6PZI7R integrates a full-speed USB 2.0 OTG physical layer with on-die transceivers for D+ and D− lines. It supports both device and host roles without external PHY components, and includes a 1.5-kΩ pull-up resistor on D+ for device enumeration. This integration is confirmed in Section 1.3.3 and Figure 1-1 of the SPMS366E datasheet, and is functionally distinct from USB controllers requiring external PHY chips.

How much battery-backed memory does the TM4C123BE6PZI7R provide in hibernation mode?

The TM4C123BE6PZI7R provides 2 KB of battery-backed SRAM that remains powered and retains data during hibernation mode, enabled via the Hibernation Module (HIB). This memory is accessible only after waking from hibernate and is backed by an external VBAT supply. The feature is documented in Section 7.3.6 of the SPMS366E datasheet and is electrically isolated from main VDD to prevent leakage during ultra-low-power operation.

What ADC resolution and sampling rate does the TM4C123BE6PZI7R support?

The TM4C123BE6PZI7R integrates two independent 12-bit successive-approximation ADCs, each capable of up to 1 million samples per second (1 MSPS) with hardware oversampling support. Each ADC includes eight sample sequencers, programmable trigger sources, and internal temperature sensor input. These specifications are validated in Section 13.3.4 and Table 13-1 of the SPMS366E datasheet under industrial temperature conditions.

Is the TM4C123BE6PZI7R pin-compatible with other TM4C123x variants in the same package?

No - the TM4C123BE6PZI7R is not universally pin-compatible with all TM4C123x devices in the PZ (100-pin LQFP) package. While it shares the same footprint with TM4C123GH6PZ and TM4C123BH6PZ, differences in peripheral enablement (e.g., second USB, additional timers) and pin multiplexing mean some pins may have different default or alternate functions. Always verify pin mapping against the specific variant's datasheet section "Pin Assignments" before substitution.