Texas Instruments TM4C1237H6PZI7R

Overview

TM4C1237H6PZI7R 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 (up to 1MSPS), PWM, USB 2.0, and multiple UART/SPI/I²C interfaces. It operates at up to 80 MHz, supports hibernation mode with RTC and battery-backed memory, and targets embedded control in industrial automation, motor control, and IoT edge nodes.

For engineers reviewing the TM4C1237H6PZI7R datasheet, TM4C1237H6PZI7R pinout, TM4C1237H6PZI7R application, or TM4C1237H6PZI7R equivalent, key selection considerations include its 100-pin LQFP package, -40°C to +105°C industrial temperature grade, integrated FPU for real-time signal processing, USB device/host capability, and hardware-accelerated cryptographic support via ROM-based TivaWare libraries.

Technical Context

The TM4C1237H6PZI7R implements a full-featured ARM Cortex-M4F core with single-precision floating-point unit, memory protection unit (MPU), and NVIC supporting up to 80 interrupt lines. Its system-level integration includes μDMA controller (32-channel), hibernation module with RTC and VBAT backup, and configurable GPIOs with slew-rate control and programmable pull-ups/pull-downs.

Peripherals are tightly coupled to the bus matrix: dual 12-bit ADCs (ADC0/ADC1) with eight sample sequencers and hardware averaging; four 32-bit general-purpose timers (GPTM) with PWM and capture capabilities; and three UARTs (one with IrDA and ISO 7816), two I²C modules (one with SMBus), and four SPI modules - all clocked from a flexible PLL-based system clock tree with multiple dividers and gating controls.

Key Specifications

Pinout & Package

TM4C1237H6PZI7R is housed in a 100-pin LQFP package (PZ suffix), with exposed thermal pad for enhanced heat dissipation in continuous operation. Pin functions are multiplexed across GPIO banks A–K, supporting configurable drive strength, slew rate, and digital filtering.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F407VGT6 and MSP432P401RIPZ, the TM4C1237H6PZI7R uniquely balances industrial-grade temperature tolerance, integrated USB PHY, hibernation-optimized power management, and ROM-based peripheral drivers - making it optimal for cost-sensitive, field-deployed embedded controllers requiring both performance and reliability.

Availability

TM4C1237H6PZI7R is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, IoT edge gateways, factory automation controllers, and battery-backed sensor nodes requiring stable component supply across extended temperature ranges.

Supply support for TM4C1237H6PZI7R 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 delivering high-reliability components for industrial, automotive, and aerospace markets.

The TM4C1237H6PZI7R belongs to TI's Tiva C Series microcontroller family, designed specifically for cost-effective, high-integration embedded control applications demanding real-time performance, low-power operation, and robust peripheral sets - especially where USB, analog sensing, and industrial temperature range are mandatory.

FAQ

What is the maximum operating frequency of the TM4C1237H6PZI7R?

The TM4C1237H6PZI7R operates at a maximum system clock frequency of 80 MHz, achieved via its integrated PLL that accepts input from internal precision oscillator (PIOSC), external crystal (4–25 MHz), or external clock source. This frequency is sustained across the full -40°C to +105°C temperature range and 3.0–3.6 V supply, enabling deterministic real-time execution for control loops and signal processing tasks within the TM4C1237H6PZI7R.

Does the TM4C1237H6PZI7R support USB device and host modes simultaneously?

No - the TM4C1237H6PZI7R features a single USB controller that supports device, host, or OTG operation, but only one mode can be active at a time. Mode selection is configured at runtime via the USBPC register and requires appropriate physical layer setup (e.g., USB0ID pin state, VBUS detection). The TM4C1237H6PZI7R does not implement dual-role port hardware for concurrent device/host operation.

How much SRAM is available for application use in the TM4C1237H6PZI7R?

The TM4C1237H6PZI7R integrates 32 KB of on-chip SRAM, all directly accessible by the Cortex-M4F core and μDMA controller. No portion is reserved exclusively for system use; developers may allocate the full 32 KB for stack, heap, buffers, or variables. This SRAM is backed by the hibernation module and retains data during deep-sleep states when VBAT is supplied to the TM4C1237H6PZI7R.

Is the TM4C1237H6PZI7R pin-compatible with other Tiva C Series MCUs?

The TM4C1237H6PZI7R uses a 100-pin LQFP package shared with several other TM4C123x devices (e.g., TM4C123GH6PZ), but pin compatibility is not guaranteed across all variants due to differences in peripheral mapping and GPIO alternate function assignments. For example, USB0ID and USB0VBUS locations differ between some PZ-package variants. Always verify pinout against the specific TM4C1237H6PZI7R datasheet before board reuse.

What debug interfaces does the TM4C1237H6PZI7R support?

The TM4C1237H6PZI7R supports JTAG and ARM Serial Wire Debug (SWD) interfaces through dedicated pins (TCK, TMS, TDI, TDO, nTRST, SWDIO, SWCLK). SWD is the preferred method for modern debug probes (e.g., TI XDS110, Segger J-Link) due to its 2-pin footprint and full debug capability. Both interfaces provide full halt-mode debugging, real-time watchpoint support, and flash programming access for the TM4C1237H6PZI7R.