Texas Instruments TM4C1237H6PZI7

Overview

TM4C1237H6PZI7 from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 256 KB Flash, 32 KB SRAM, and integrated analog peripherals including 12-bit ADC with 12 channels, two UARTs, two I²C, four SPI, and USB 2.0 OTG. 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 real-time motor control and industrial sensor interface applications.

For engineers reviewing the TM4C1237H6PZI7 datasheet, TM4C1237H6PZI7 pinout, TM4C1237H6PZI7 application, or TM4C1237H6PZI7 equivalent, key selection considerations include its integrated USB OTG PHY, hibernation module with RTC and battery-backed memory, FPU-enabled floating-point performance, and support for deterministic real-time execution via NVIC and SysTick.

Technical Context

The TM4C1237H6PZI7 integrates an ARM Cortex-M4F core with single-precision FPU, enabling efficient signal processing and control loop computation. Its system-level integration includes μDMA controller (32-channel), hibernation module with dedicated 256-byte battery-backed RAM, and ROM-resident TivaWare™ peripheral drivers.

Peripherals are tightly coupled to the bus matrix: dual 12-bit ADCs (up to 1 MSPS aggregate), four 32-bit general-purpose timers (with PWM and capture capability), and USB 2.0 OTG with integrated PHY eliminate external transceiver requirements. Clock management supports multiple sources including internal precision oscillator, PLL, and external crystal.

Key Specifications

Pinout & Package

TM4C1237H6PZI7 is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments follow TI's standard Tiva C Series pinout layout, supporting multiplexed GPIO, peripheral functions, and dedicated debug interfaces.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TM4C1237H6PZI7, TM4C1294NCPDT offers greater memory and Ethernet but sacrifices hibernation efficiency, while STM32F407VGT6 provides higher SRAM but demands external USB components and lacks integrated low-power RTC retention.

Availability

TM4C1237H6PZI7 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, PLC I/O modules, and USB HID devices requiring stable component supply across long-lifecycle embedded programs.

Supply support for TM4C1237H6PZI7 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 leader specializing in analog, embedded processing, and connectivity technologies, with decades of experience in industrial and automotive-grade microcontrollers.

The TM4C1237H6PZI7 belongs to the Tiva C Series - designed specifically for cost-sensitive, real-time industrial control applications requiring integrated analog, USB, and ultra-low-power hibernation capabilities.

FAQ

What is the maximum operating frequency of the TM4C1237H6PZI7?

The TM4C1237H6PZI7 operates at a maximum system clock frequency of 80 MHz, achieved via its on-chip PLL that accepts input from internal precision oscillator (±1% accuracy), external crystal (4–25 MHz), or external clock source. This frequency is fully supported across the full -40°C to +105°C temperature range and qualifies for industrial applications requiring deterministic timing.

Does the TM4C1237H6PZI7 include an integrated USB physical layer (PHY)?

Yes, the TM4C1237H6PZI7 integrates a full-speed USB 2.0 OTG PHY with on-die termination and ESD protection. This eliminates the need for external transceivers or level-shifting components, allowing direct connection of USB D+ and D− lines to a standard USB Type-A or Micro-B connector in both host and device modes.

How much battery-backed memory does the TM4C1237H6PZI7 provide in hibernation mode?

The TM4C1237H6PZI7 includes 256 bytes of battery-backed RAM within its hibernation module. This memory retains data during complete system power loss when supplied by a coin-cell or supercapacitor, and is accessible only during hibernation or after wake-up - preserving critical state such as timestamps, error logs, or calibration offsets.

What ADC resolution and sampling rate does the TM4C1237H6PZI7 support?

The TM4C1237H6PZI7 features two independent 12-bit successive-approximation ADCs, each with up to 8 sample sequencers. Aggregate sampling rate reaches 1 MSPS when using both ADCs concurrently, with programmable sample-and-hold timing and hardware averaging (2x–64x) to improve effective resolution in noisy environments.

Is the TM4C1237H6PZI7 pin-compatible with other Tiva C Series microcontrollers?

No, the TM4C1237H6PZI7 is not pin-compatible with other Tiva C Series variants such as TM4C1294 or TM4C123GH6PM. While it shares the same 100-pin LQFP footprint, pin functions differ significantly - especially for USB, hibernation, and peripheral mapping - requiring unique PCB layout and schematic design for the TM4C1237H6PZI7.