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Texas Instruments TM4C1231H6PMI
- Part No.:
- TM4C1231H6PMI
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
TM4C1231H6PMI.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:344
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Product details
Overview
TM4C1231H6PMI 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 device support - deployed in industrial motor control, sensor hubs, and smart metering systems.
For engineers reviewing the TM4C1231H6PMI datasheet, TM4C1231H6PMI pinout, TM4C1231H6PMI application, or TM4C1231H6PMI equivalent, key selection criteria include its 80 MHz CPU clock, hibernation module with RTC and battery-backed memory, 3.3 V operation, -40°C to +85°C industrial temperature range, and QFP-64 package compatibility with TI's TivaWare™ software stack.
Technical Context
The TM4C1231H6PMI integrates a single-core ARM Cortex-M4F processor with hardware floating-point unit (FPU), supporting Thumb-2 and DSP instructions for real-time signal processing. It features a 32-bit bus interface, NVIC with 64 interrupt lines, and SysTick timer for OS scheduling.
System-level integration includes a hibernation module with dedicated RTC, battery-backed RAM, and low-power wake-up sources; a μDMA controller supporting 32-channel arbitration; and peripheral-specific clock gating via the system control block (SCB) and run-mode clock configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 80 MHz - enables deterministic real-time control with FPU-accelerated math operations |
| Flash Memory | 256 KB - sufficient for complex firmware with bootloader, communication stacks, and safety monitoring logic |
| SRAM | 32 KB - supports real-time data buffering, stack/heap allocation, and DMA descriptor tables |
| ADC | 12-bit, 1 MSPS, 12-channel - suitable for precision analog sensing in motor current feedback or environmental monitoring |
| USB Interface | USB 2.0 Device-only - enables direct PC connectivity for firmware updates and diagnostics without external PHY |
| Operating Temp | -40°C to +85°C - qualified for uncontrolled industrial environments and outdoor metering enclosures |
| Supply Voltage | 3.3 V ±10% - simplifies power design with single LDO; no level-shifting required for most peripherals |
Pinout & Package
TM4C1231H6PMI is housed in a 64-pin LQFP (7 mm × 7 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments are defined per TI SPMS339E datasheet Rev E, Section 1.4 and Table 1-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Digital core (VDD), analog (VDDA), and USB PHY (VDDC) rails require separate 3.3 V filtering for noise isolation |
| GND, GNDA, GNDC | Ground returns | Analog ground (GNDA) must be star-connected to minimize ADC reference noise; USB ground (GNDC) isolated for EMI control |
| USB0DP/USB0DM | USB differential pair | Direct connection to USB connector with 27 Ω series resistors and 1.5 kΩ pull-up on DP for device enumeration |
| PD0/PD1 | UART0 TX/RX | Default serial debug interface; supports 3.3 V logic levels and auto-baud detection up to 3 Mbps |
| PF0–PF4 | GPIO with NMI/Wake-up | Configurable as wake-up sources from hibernate mode; PF0 doubles as NMI input for critical fault handling |
Key Features
| Feature | Design Value |
|---|---|
| Hibernation Module | Retains RTC, 2 KB battery-backed SRAM, and wake-up on GPIO/RTC match - reduces standby power to 1.1 µA |
| μDMA Controller | 32-channel, scatter-gather capable - offloads CPU during ADC sampling, UART streaming, or SPI sensor reads |
| Integrated ROM Bootloader | Pre-programmed USB/UART/I²C boot loader - enables field firmware updates without JTAG debugger |
| Peripheral Integration | Four PWM generator blocks (16 PWM outputs), two quadrature encoder interfaces, and analog comparators - eliminates external timing ICs in motion control |
| TivaWare™ Support | Fully documented driver library with CMSIS-compliant APIs, example projects, and HAL abstraction - accelerates development for RTOS and bare-metal use cases |
Applications
| Industrial Motor Control | Smart Energy Metering |
|---|---|
Use Scenario: Closed-loop BLDC motor drive with current sensing, commutation timing, and thermal monitoring. IC Role / Device Role / Timing Role: Real-time controller executing FOC algorithm, managing gate drivers via PWM, and sampling ADC at 10 kHz. Use Value: 80 MHz Cortex-M4F with FPU delivers <1 µs interrupt latency and deterministic PWM jitter under 1 ns - critical for torque ripple reduction. | Use Scenario: DIN-rail mounted electricity meter with tariff switching, tamper detection, and remote firmware update over USB. IC Role / Device Role / Timing Role: System-on-chip managing metrology ADC, RTC calendar, secure boot, and USB device interface. Use Value: Integrated hibernation module maintains accurate time and retains billing data during mains loss using coin-cell backup - meets IEC 62053-21 Class 1 accuracy requirements. |
| Sensor Fusion Hub | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Edge node aggregating temperature, humidity, and vibration data from multiple analog/digital sensors before forwarding via RS-485. IC Role / Device Role / Timing Role: Data concentrator with synchronized multi-channel ADC sampling, sensor calibration, and protocol translation. Use Value: 12-channel ADC with hardware averaging and μDMA reduces host CPU load by 70% versus polled acquisition - extends battery life in wireless nodes. | Use Scenario: Modular digital input/output expansion for compact PLCs requiring high-speed discrete I/O scanning and diagnostics. IC Role / Device Role / Timing Role: Dedicated I/O processor handling 32-channel GPIO debouncing, status reporting, and watchdog supervision. Use Value: Programmable GPIO commit registers enable atomic I/O state updates; built-in CRC engine validates configuration integrity - satisfies IEC 61508 SIL2 functional safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TM4C123GH6PM | Includes 2 KB EEPROM and additional 16 KB SRAM; same pinout and peripheral set | Better suited for data-logging applications requiring non-volatile parameter storage without external memory | Select TM4C123GH6PM if EEPROM retention and extended RAM are required; otherwise TM4C1231H6PMI offers cost-optimized feature set |
| STM32F401CEU6 | ARM Cortex-M4F @ 84 MHz, 512 KB flash, 96 KB SRAM, no integrated USB PHY | Requires external USB transceiver; broader ecosystem but lacks hibernation-optimized RTC and battery-backed memory | Choose STM32F401CEU6 when larger code space or ST's HAL/STM32CubeMX toolchain preference outweighs TI-specific low-power advantages |
Compared with TM4C123GH6PM and STM32F401CEU6, the TM4C1231H6PMI provides optimal balance of industrial-grade low-power operation, integrated USB device capability, and proven TivaWare™ support - making it ideal for cost-sensitive, battery-aware embedded control where EEPROM is not mandatory.
Availability
TM4C1231H6PMI is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, sensor fusion hubs, and PLC I/O modules requiring stable component supply across long-lifecycle production programs.
Supply support for TM4C1231H6PMI 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 reliable, high-performance silicon for industrial, automotive, and consumer applications.
The TM4C1231H6PMI belongs to TI's Tiva™ C Series microcontroller family, designed specifically for cost-effective, low-power, real-time control in industrial automation, building systems, and smart grid infrastructure.
FAQ
What is the maximum operating frequency of the TM4C1231H6PMI?
The TM4C1231H6PMI operates at a maximum CPU frequency of 80 MHz, achieved via its internal PLL driven from a 1–25 MHz crystal or external clock source. This speed is fully supported across the full industrial temperature range (-40°C to +85°C) and 3.3 V supply, enabling deterministic real-time execution of control loops and communication stacks without throttling.
Does the TM4C1231H6PMI include an integrated USB physical layer (PHY)?
Yes, the TM4C1231H6PMI integrates a full-speed USB 2.0 device PHY compliant with USB Specification Revision 2.0. It supports 12 Mbps operation, requires only external 1.5 kΩ pull-up resistor on USB0DP, and eliminates need for external transceivers - simplifying board layout and reducing BOM cost compared to microcontrollers requiring external USB PHY chips.
What low-power modes does the TM4C1231H6PMI support, and what is the lowest achievable current draw?
The TM4C1231H6PMI supports Sleep, Deep-Sleep, and Hibernate modes. In Hibernate mode with RTC active and 2 KB battery-backed SRAM retained, typical current draw is 1.1 µA at 3.3 V and 25°C. Wake-up sources include GPIO, RTC match, and external interrupts - making it suitable for battery-powered applications requiring multi-year operation on primary cells.
Is the TM4C1231H6PMI pin-compatible with other devices in the TM4C123x family?
Yes, the TM4C1231H6PMI shares identical 64-pin LQFP package and pinout with TM4C1230H6PM, TM4C1231H6PZ, and TM4C123GH6PM variants. This allows direct PCB reuse across different memory configurations and feature sets - for example, upgrading to TM4C123GH6PM adds EEPROM without layout changes, provided thermal pad and decoupling follow TI's recommended footprint.
What development tools and software support are available for the TM4C1231H6PMI?
Texas Instruments provides full support for the TM4C1231H6PMI via TivaWare™ Peripheral Driver Library, Code Composer Studio IDE, and IAR Embedded Workbench. TI also offers the EK-TM4C123GXL LaunchPad development kit, which uses the same MCU footprint and debug interface - enabling rapid prototyping, driver validation, and production-ready firmware testing without custom hardware.
TM4C1231H6PMI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-LQFP
- Series:
- Tiva™ C
- Packaging:
- Tray
- 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
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, WDT
- Number of I/O:
- 43
- 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:
TM4C1231H6PMI FAQ
1.How can I place an order for TM4C1231H6PMI through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1231H6PMI 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 TM4C1231H6PMI reliable?
The price and inventory of TM4C1231H6PMI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1231H6PMI is usually 5 days.
3.What payment methods are accepted for TM4C1231H6PMI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1231H6PMI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1231H6PMI?
TM4C1231H6PMI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1231H6PMI 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 TM4C1231H6PMI?
For technical support, including TM4C1231H6PMI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1231H6PMI requirements.
6.How does Aetrix verify that TM4C1231H6PMI is sourced from the original manufacturer or authorized distributors?
All TM4C1231H6PMI 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 TM4C1231H6PMI meets industry standards.
7.What is the process for return or replacement of TM4C1231H6PMI?
All TM4C1231H6PMI units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1231H6PMI, 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 TM4C1231H6PMI part is unused and in its original packaging.
Return procedure for TM4C1231H6PMI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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