Texas Instruments TM4C1232H6PMI7R

Overview

TM4C1232H6PMI7R from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 80 MHz operation, 256 KB flash, 32 KB SRAM, integrated USB 2.0 OTG, dual CAN 2.0A/B controllers, and 12-bit ADC with 12 channels. It serves as a main system controller in industrial motor control, smart sensor nodes, and USB-connected embedded gateways.

For engineers reviewing the TM4C1232H6PMI7R datasheet, TM4C1232H6PMI7R pinout, TM4C1232H6PMI7R application, or TM4C1232H6PMI7R equivalent, key selection factors include its 80 MHz Cortex-M4F core with FPU, USB OTG support, dual CAN interfaces, 12-bit ADC resolution, and -40°C to +85°C industrial temperature rating.

Technical Context

The TM4C1232H6PMI7R implements a full-featured ARM Cortex-M4F core with single-precision floating-point unit (FPU), supporting DSP instructions and hardware divide. Its memory subsystem includes 256 KB on-chip flash with ECC, 32 KB SRAM, and 2 KB EEPROM for nonvolatile data storage.

Peripherals include two CAN 2.0A/B controllers with dedicated message RAM, USB 2.0 OTG with internal PHY, eight UARTs, four I²C modules, four SSI (SPI) interfaces, three 16/32-bit general-purpose timers, and a 12-bit 1-MSPS ADC with eight sample sequencers and hardware averaging.

Key Specifications

Pinout & Package

TM4C1232H6PMI7R is housed in a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined across five GPIO ports (A–E), plus dedicated peripheral pins for USB, CAN, UART, I²C, SSI, PWM, and analog inputs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TM4C1232H6PMI7R, TM4C1233H6PMT trades compact 64-pin packaging for greater I/O and analog flexibility, while STM32F407VGT6 delivers higher performance at the cost of added BOM complexity for USB and CAN interfaces.

Availability

TM4C1232H6PMI7R is available at Aetrix Electronics and suitable for industrial motor control, smart sensor gateways, and automotive diagnostic tools requiring stable component supply and long-term industrial temperature support.

Supply support for TM4C1232H6PMI7R 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 since 1930.

The TM4C1232H6PMI7R belongs to TI's Tiva C Series, designed specifically for cost-sensitive, real-time embedded applications demanding high peripheral integration, industrial reliability, and USB/CAN connectivity without external transceivers.

FAQ

What is the maximum operating frequency of the TM4C1232H6PMI7R?

The TM4C1232H6PMI7R operates at a maximum system clock frequency of 80 MHz, derived from its internal PLL locked to an external crystal or precision oscillator. This frequency applies to both the Cortex-M4F core and all synchronous peripherals including USB, CAN, and ADC timing domains. The device maintains full specification compliance-including flash access timing and peripheral latency-at this rated speed across its entire industrial temperature range (-40°C to +85°C).

Does the TM4C1232H6PMI7R include an integrated USB physical layer (PHY)?

Yes, the TM4C1232H6PMI7R integrates a full-speed USB 2.0 OTG physical layer compliant with USB Specification Revision 2.0. This eliminates the need for an external USB transceiver in most designs. The internal PHY supports host, device, and OTG roles, and connects directly to the USB connector via standard D+ and D− lines, with VBUS sensing and ID pin functionality enabled through dedicated package pins.

How many CAN interfaces does the TM4C1232H6PMI7R support, and are they fully independent?

The TM4C1232H6PMI7R supports two independent CAN 2.0A/B controllers (CAN0 and CAN1), each with dedicated message RAM (64 message objects), filtering logic, and timestamp registers. They operate concurrently without resource contention, enabling simultaneous communication on separate CAN buses-such as powertrain and chassis networks in automotive diagnostics or primary and backup fieldbuses in industrial automation-without software arbitration overhead.

What type of analog-to-digital converter is integrated into the TM4C1232H6PMI7R?

The TM4C1232H6PMI7R integrates a 12-bit successive approximation register (SAR) ADC with a maximum sampling rate of 1 MSPS. It features 12 external input channels, eight programmable sample sequencers (including one dedicated to processor-triggered sampling), hardware oversampling up to 64×, and an internal temperature sensor. The ADC supports both single-ended and differential input modes, with configurable voltage references and automatic hardware averaging to improve effective resolution.

Is the TM4C1232H6PMI7R pin-compatible with other devices in the TM4C123x family?

No, the TM4C1232H6PMI7R is not pin-compatible with other TM4C123x variants due to differences in package size and pin assignment. It uses a 64-pin LQFP, whereas models like TM4C1233H6PMT use 100-pin TQFP and TM4C1230H6PM use 64-pin LQFP but with different peripheral mappings on shared pins. Engineers must verify pinout diagrams and signal multiplexing tables for each specific part number before board reuse or migration.