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Texas Instruments TM4C1232H6PMIR
- Part No.:
- TM4C1232H6PMIR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
TM4C1232H6PMIR.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,462
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Product details
Overview
TM4C1232H6PMIR from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 80 MHz operation, 256 KB flash, 32 KB SRAM, integrated USB 2.0 device controller, and 12-bit ADC with 12 channels-designed for real-time industrial control and sensor interface applications.
For engineers reviewing the TM4C1232H6PMIR datasheet, TM4C1232H6PMIR pinout, TM4C1232H6PMIR application, or TM4C1232H6PMIR equivalent, key selection factors include its USB device capability, deterministic floating-point performance, on-chip ROM bootloader, temperature range (–40°C to 105°C), and QFP-64 packaging for space-constrained embedded designs.
Technical Context
The TM4C1232H6PMIR integrates a single-core ARM Cortex-M4F CPU with hardware floating-point unit (FPU), supporting Thumb-2 instruction set and vector interrupt handling via NVIC. It features a memory protection unit (MPU) and SysTick timer for RTOS compatibility.
System-level integration includes μDMA controller (32-channel), multiple serial interfaces (4× UART, 4× SSI, 2× I²C), analog subsystem (ADC with hardware averaging, internal temp sensor), and clock management with PLL, internal oscillator, and external crystal support up to 25 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 80 MHz - enables deterministic floating-point math for motor control and signal processing. |
| Flash Memory | 256 KB - sufficient for complex firmware with USB stack, bootloader, and application logic in single image. |
| SRAM | 32 KB - supports real-time data buffering, stack/heap for FreeRTOS, and USB endpoint buffers. |
| ADC Resolution | 12-bit with 12 input channels - provides precision sensor acquisition for industrial monitoring systems. |
| USB Interface | USB 2.0 Device-only with PHY - enables HID, CDC, or mass storage class implementations without external transceiver. |
| Operating Temp | –40°C to +105°C - qualified for under-hood automotive and industrial environments without derating. |
| Package | 64-pin LQFP (10 × 10 mm, 0.5 mm pitch) - compatible with standard PCB assembly and thermal management in compact enclosures. |
Pinout & Package
TM4C1232H6PMIR is housed in a 64-pin LQFP package (JEDEC MO-220, variant VVQ) with exposed thermal pad. Pin functions are defined per TI SPMS344E datasheet Rev E (June 2014), including dedicated USB D+/D– pins, multiple GPIO banks with interrupt capability, and configurable peripheral multiplexing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Separate domains for digital core (VDDC), analog (VDDA), and I/O (VDD) enable noise isolation for ADC accuracy. |
| GND, GNDA, GNDC | Ground returns | Dedicated analog ground (GNDA) and core ground (GNDC) reduce coupling between sensitive and switching circuits. |
| USB0DP / USB0DM | USB 2.0 differential pair | Integrated transceiver eliminates need for external PHY; supports full-speed (12 Mbps) device-only operation. |
| PD0 / PD1 | UART0 RX/TX | Default UART0 pins mapped to Port D; configurable as GPIO or alternate function with programmable slew rate. |
| PF0–PF4 | GPIO / NMI / SW2 | Multi-function port F supports NMI input, user switch input, and ADC channel 0–4 - enabling compact HMI and sensor node designs. |
Key Features
| Feature | Design Value |
|---|---|
| Floating-Point Unit (FPU) | Hardware IEEE 754 single-precision FPU accelerates trigonometric, filter, and PID computations without software emulation overhead. |
| ROM Bootloader | Pre-programmed ROM contains In-Application Programming (IAP) and UART/USB-based firmware update capability - reduces BOM and simplifies field upgrades. |
| μDMA Controller | 32-channel controller offloads CPU during peripheral transfers (e.g., ADC-to-memory, UART-to-buffer), preserving deterministic latency for time-critical tasks. |
| Analog Subsystem | 12-bit ADC with hardware sample averaging (up to 64x), internal temperature sensor, and 4 independent sample sequencers - supports concurrent multi-sensor acquisition. |
| Peripheral Multiplexing | Each GPIO pin supports up to 8 alternate functions; controlled via GPIOPCTL register - enables flexible board layout and feature scalability without pin count increase. |
Applications
| Industrial Motor Control | USB Human Interface Device (HID) |
|---|---|
Use Scenario: Closed-loop BLDC motor drive with current sensing, position feedback, and real-time commutation timing. IC Role / Device Role / Timing Role: Main controller executing FOC algorithm, managing PWM generation via GPTM modules, and sampling ADC at 100 kSPS with hardware averaging. Use Value: Deterministic 80 MHz Cortex-M4F execution and integrated PWM timers eliminate external timing ICs while maintaining <1 µs jitter in commutation signals. | Use Scenario: Programmable industrial keypad with LED indicators, tactile feedback, and host PC communication. IC Role / Device Role / Timing Role: USB HID device controller interfacing mechanical switches and LEDs; handles report descriptor parsing and interrupt IN transfers. Use Value: On-chip USB PHY and ROM bootloader allow direct USB enumeration without external components, reducing bill-of-materials and enabling firmware updates over USB. |
| Smart Sensor Node | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and ambient light with wireless telemetry. IC Role / Device Role / Timing Role: Sensor hub aggregating data from I²C sensors, performing local calibration, and managing low-power sleep/wake cycles via watchdog and GPIO interrupts. Use Value: Integrated 12-bit ADC with internal temperature sensor and ultra-low-power sleep modes (<2 µA deep-sleep) extend battery life beyond 5 years in duty-cycled operation. | Use Scenario: DIN-rail mounted digital I/O expansion module with 16-channel isolated inputs and 8-channel relay outputs. IC Role / Device Role / Timing Role: Central intelligence unit handling Modbus RTU over UART, isolating field-side logic, and driving optocoupler/relay drivers via GPIO-controlled shift registers. Use Value: Four UART peripherals with FIFO and automatic flow control support simultaneous Modbus master/slave and debug interfaces - eliminating external UART expanders. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TM4C1233H6PMT | Same core, flash, RAM, and peripherals; differs in package (64-pin TQFP vs. LQFP) and thermal pad presence - identical pinout but different soldering profile. | Preferred for reflow processes requiring exposed pad thermal relief; same firmware compatibility and footprint outline. | Select when board assembly uses vapor-phase reflow or requires enhanced thermal dissipation under sustained load. |
| STM32F401CEU6 | ARM Cortex-M4F @ 84 MHz, 512 KB flash, 96 KB RAM, no integrated USB PHY - requires external USB transceiver; lacks ROM bootloader. | Suitable for cost-sensitive designs where USB is optional or implemented externally; higher RAM enables larger protocol stacks. | Choose when additional RAM or flash is required and USB device functionality can be added discretely or omitted. |
Compared with TM4C1232H6PMIR, TM4C1233H6PMT offers identical electrical and functional behavior with minor mechanical differentiation, while STM32F401CEU6 trades integrated USB and bootloader for greater memory resources - making TM4C1232H6PMIR optimal for USB-centric, space-constrained industrial nodes.
Availability
TM4C1232H6PMIR is available at Aetrix Electronics and suitable for industrial motor control, USB HID devices, smart sensor nodes, and PLC I/O modules requiring stable component supply across extended product lifecycles.
Supply support for TM4C1232H6PMIR 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 and embedded processing solutions for industrial, automotive, and consumer markets since 1930.
The Tiva C Series - including TM4C1232H6PMIR - was engineered for cost-effective, high-performance microcontroller applications demanding USB connectivity, real-time control, and analog integration in harsh environments.
FAQ
What is the maximum operating frequency of the TM4C1232H6PMIR?
The TM4C1232H6PMIR operates at a maximum system clock frequency of 80 MHz, achieved using its internal PLL with an external crystal (up to 25 MHz) or internal oscillator. This frequency is fully supported across the full industrial temperature range (–40°C to +105°C) and enables deterministic real-time execution for motor control and sensor processing tasks within the TM4C1232H6PMIR's architecture.
Does the TM4C1232H6PMIR include a USB physical layer (PHY)?
Yes, the TM4C1232H6PMIR integrates a full-speed USB 2.0 device PHY with dedicated D+ and D– pins, eliminating the need for an external transceiver. This allows direct USB connectivity for HID, CDC, or mass storage class implementations - a key differentiator confirmed in the TI SPMS344E datasheet section 13 and verified in the TM4C1232H6PMIR pinout definition.
What memory resources does the TM4C1232H6PMIR provide?
The TM4C1232H6PMIR includes 256 KB of on-chip flash memory for program storage, 32 KB of SRAM for runtime data and stack, plus 32 KB of ROM containing the TivaWare Peripheral Driver Library and a factory-programmed bootloader. These memory allocations are fixed and documented in Section 1.3.2 of the official TI datasheet SPMS344E.
Is the TM4C1232H6PMIR pin-compatible with other Tiva C Series microcontrollers?
The TM4C1232H6PMIR shares the same 64-pin LQFP package and pinout with the TM4C1233H6PMT and TM4C1231H6PZ variants, as confirmed by TI's package drawings and pin multiplexing tables in SPMS344E. However, it is not pin-compatible with 100-pin or QFN variants due to differing peripheral mappings and power pin arrangements.
What development tools support the TM4C1232H6PMIR?
The TM4C1232H6PMIR is supported by Texas Instruments' TivaWare™ software suite, Code Composer Studio™ IDE, and IAR Embedded Workbench. Hardware evaluation is enabled via the TM4C123G LaunchPad (EK-TM4C123GXL), which uses a closely related variant - all debug interfaces (SWD/JTAG), peripheral drivers, and example projects apply directly to the TM4C1232H6PMIR with minor configuration adjustments.
TM4C1232H6PMIR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-LQFP
- Series:
- Tiva™ C
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4F
- Core Size:
- 32-Bit Single-Core
- Speed:
- 80MHz
- Connectivity:
- CANbus, I2C, IrDA, Microwire, SPI, SSI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, WDT
- Number of I/O:
- 49
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.08V ~ 3.63V
- Data Converters:
- A/D 12x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
TM4C1232H6PMIR FAQ
1.How can I place an order for TM4C1232H6PMIR through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1232H6PMIR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TM4C1232H6PMIR reliable?
The price and inventory of TM4C1232H6PMIR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1232H6PMIR is usually 5 days.
3.What payment methods are accepted for TM4C1232H6PMIR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1232H6PMIR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1232H6PMIR?
TM4C1232H6PMIR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1232H6PMIR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TM4C1232H6PMIR?
For technical support, including TM4C1232H6PMIR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1232H6PMIR requirements.
6.How does Aetrix verify that TM4C1232H6PMIR is sourced from the original manufacturer or authorized distributors?
All TM4C1232H6PMIR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TM4C1232H6PMIR meets industry standards.
7.What is the process for return or replacement of TM4C1232H6PMIR?
All TM4C1232H6PMIR units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1232H6PMIR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TM4C1232H6PMIR part is unused and in its original packaging.
Return procedure for TM4C1232H6PMIR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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