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Texas Instruments TM4C1231E6PMI7R
- Part No.:
- TM4C1231E6PMI7R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
TM4C1231E6PMI7R.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,982
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Product details
Overview
TM4C1231E6PMI7R from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 80 MHz operation, 256 KB flash, 32 KB SRAM, and integrated USB 2.0 device controller, ADC (12-bit, 1MSPS), PWM, and multiple serial interfaces (UART, SPI, I²C). It serves as a main system controller in industrial sensor nodes requiring real-time control, local data processing, and USB connectivity.
For engineers reviewing the TM4C1231E6PMI7R datasheet, TM4C1231E6PMI7R pinout, TM4C1231E6PMI7R application, or TM4C1231E6PMI7R equivalent, key selection criteria include its 80 MHz Cortex-M4F core with FPU, 256 KB on-chip flash with EEPROM emulation, hibernation module for sub-μA sleep current, and QFP-64 package with 51 GPIOs supporting peripheral multiplexing.
Technical Context
The TM4C1231E6PMI7R implements a full-featured ARM Cortex-M4F core with single-precision floating-point unit and NVIC supporting up to 80 interrupts. Its memory subsystem includes 256 KB flash with 16 KB EEPROM emulation, 32 KB SRAM, and ROM-based bootloader with TivaWare API support.
Peripherals include a 12-bit 1 MSPS ADC with 12-channel analog input, eight 16/32-bit general-purpose timers (including RTC and PWM-capable), four UARTs (one with ISO 7816 and SIR), two I²C modules, three SPI modules, and a USB 2.0 device controller with integrated PHY - all managed via a unified clock gating and power control architecture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 80 MHz with hardware FPU - enables deterministic real-time math for motor control or sensor fusion. |
| Flash Memory | 256 KB with EEPROM emulation - supports firmware updates and nonvolatile parameter storage without external EEPROM. |
| SRAM | 32 KB - sufficient for RTOS stacks, communication buffers, and algorithm working memory. |
| ADC | 12-bit, 1 MSPS, 12-channel - suitable for high-speed analog monitoring in PLC I/O modules. |
| USB Interface | USB 2.0 Device with integrated PHY - allows direct PC connection for configuration, diagnostics, or firmware update. |
| Hibernate Current | 1.6 µA typical - enables battery-powered operation for >1 year in wireless sensor endpoints. |
| GPIO Count | 51 configurable pins with peripheral function multiplexing - supports flexible board-level interface routing. |
Pinout & Package
TM4C1231E6PMI7R is housed in a 64-pin LQFP (7 mm × 7 mm) package with exposed thermal pad, rated for –40°C to +105°C industrial temperature range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Separate digital (VDD), analog (VDDA), and core (VDDC) rails enable noise isolation for ADC and PLL stability. |
| GND, GNDA, GNDC | Ground returns | Dedicated analog and core ground planes reduce coupling between sensitive analog and switching digital domains. |
| USB0VBUS, USB0ID | USB detection signals | Enable host/device role auto-detection and VBUS presence sensing per USB 2.0 specification. |
| PD0–PD7, PE0–PE5, PF0–PF4, etc. | General-purpose I/O | 51 GPIOs with programmable drive strength, slew rate, and pull-up/down - support UART, SPI, I²C, PWM, and interrupt inputs. |
| SSI0CLK–SSI0FSS, I2C0SCL–I2C0SDA | Serial peripheral interfaces | Dedicated hardware blocks offload CPU from bit-banging; each supports multiple modes and clock dividers. |
Key Features
| Feature | Design Value |
|---|---|
| Hibernation Module | Sub-µA deep-sleep mode with RTC wake-up, battery-backed RAM, and tamper-detect capability - extends battery life in remote telemetry devices. |
| ROM Bootloader | Factory-programmed ROM with UART/USB/I²C firmware update support - eliminates need for external programmer during field upgrades. |
| Peripheral Multiplexing | Each GPIO supports up to 8 alternate functions - maximizes peripheral flexibility without increasing pin count or PCB layers. |
| ADC Hardware Averaging | Up to 64-sample hardware averaging per conversion - improves SNR for noisy industrial analog signals without CPU overhead. |
| USB Device Stack | Integrated USB 2.0 PHY and endpoint FIFOs - enables CDC, HID, or MSC class implementations with minimal firmware footprint. |
Applications
| Industrial Sensor Node | Programmable Logic Controller (PLC) I/O Module |
|---|---|
|
Use Scenario: Compact, battery- or loop-powered field sensor collecting temperature, pressure, and vibration data with local edge processing and USB diagnostics. IC Role / Device Role / Timing Role: Main system controller executing sensor fusion algorithms, managing ADC sampling, and handling USB-CDC communication. Use Value: Hibernation current of 1.6 µA enables multi-year battery life; integrated USB eliminates need for external transceivers or debug probes. |
Use Scenario: DIN-rail mounted I/O expansion module converting 24 V DC industrial signals to digital logic for centralized PLC control. IC Role / Device Role / Timing Role: Real-time I/O manager coordinating 12-channel ADC acquisition, isolated digital input sampling, and Modbus RTU over UART. Use Value: 80 MHz Cortex-M4F core ensures deterministic <100 µs response to input changes; 256 KB flash stores dual firmware images for safe updates. |
| USB Human Interface Device (HID) | Smart Energy Meter Front-End |
|
Use Scenario: Embedded keypad/display interface emulating keyboard/mouse over USB for industrial HMIs or test equipment. IC Role / Device Role / Timing Role: USB HID device controller with GPIO matrix scanning and debouncing logic. Use Value: On-chip USB PHY and ROM HID stack reduce BOM cost and firmware development time versus external MCU+transceiver solutions. |
Use Scenario: Residential energy meter front-end acquiring voltage/current waveforms, computing RMS, harmonics, and kWh via metrology algorithms. IC Role / Device Role / Timing Role: Metrology co-processor interfacing with external sigma-delta ADCs and managing secure firmware updates via UART/USB. Use Value: Hardware FPU accelerates IEEE-754 floating-point calculations for harmonic analysis; 32 KB SRAM accommodates FFT buffers and calibration tables. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TM4C123GH6PM | Higher flash (256 KB vs. same), but adds Ethernet MAC and more peripherals; larger 144-pin LQFP package. | Targeted at networked industrial gateways; not pin-compatible with TM4C1231E6PMI7R's 64-pin layout. | Select when Ethernet or additional UART/SPI channels are required; requires PCB redesign. |
| STM32F401CEU6 | ARM Cortex-M4F @ 84 MHz, 512 KB flash, 96 KB SRAM, but lacks integrated USB PHY and hibernation module. | Suited for cost-sensitive consumer applications where external USB transceiver and higher memory are acceptable trade-offs. | Choose if larger code space and higher SRAM are critical, and external USB PHY integration is feasible. |
Compared with TM4C123GH6PM and STM32F401CEU6, the TM4C1231E6PMI7R offers optimal balance of USB integration, ultra-low-power hibernation, and compact 64-pin footprint - making it uniquely suited for space-constrained, battery-aware industrial endpoints where USB diagnostics and long service life are mandatory.
Availability
TM4C1231E6PMI7R is available at Aetrix Electronics and suitable for industrial sensor nodes, PLC I/O modules, USB HID interfaces, and smart energy meter front-ends requiring stable component supply across extended product lifecycles.
Supply support for TM4C1231E6PMI7R 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 TM4C1231E6PMI7R belongs to TI's Tiva C Series, designed specifically for cost-sensitive, real-time industrial control applications demanding low power, rich analog integration, and robust USB connectivity - without sacrificing performance or reliability.
FAQ
What is the maximum operating frequency of the TM4C1231E6PMI7R?
The TM4C1231E6PMI7R operates at a maximum system clock frequency of 80 MHz, derived from its internal PLL driven by either the precision internal oscillator (PIOSC) or an external crystal. This frequency is fully supported across the entire industrial temperature range (–40°C to +105°C) and enables deterministic real-time execution of control loops and communication stacks in the TM4C1231E6PMI7R.
Does the TM4C1231E6PMI7R include an integrated USB physical layer (PHY)?
Yes, the TM4C1231E6PMI7R integrates a full-speed USB 2.0 device PHY with on-die termination resistors and VBUS detection circuitry. This eliminates the need for external USB transceivers and simplifies compliance with USB electrical specifications - a key differentiator versus many competing Cortex-M4 microcontrollers that require external PHY components.
How much EEPROM emulation does the TM4C1231E6PMI7R provide?
The TM4C1231E6PMI7R provides 16 KB of flash-based EEPROM emulation through its ROM-based driver library, enabling wear-leveling and atomic write operations. This feature is accessible via the TivaWare API and allows reliable nonvolatile storage of calibration data, device configuration, or runtime parameters without external EEPROM chips in the TM4C1231E6PMI7R design.
What is the hibernation current consumption of the TM4C1231E6PMI7R?
The TM4C1231E6PMI7R achieves a typical hibernation current of 1.6 µA at 3.3 V and 25°C, with RTC running and 2 KB of RAM retained. This ultra-low-power state is enabled by dedicated hibernate module circuitry and supports wake-up via external pin, RTC alarm, or GPIO event - critical for battery-operated deployments of the TM4C1231E6PMI7R.
Is the TM4C1231E6PMI7R pin-compatible with other Tiva C Series microcontrollers?
No, the TM4C1231E6PMI7R is not pin-compatible with other Tiva C Series variants such as TM4C123GH6PM or TM4C1294NCPDT. It uses a unique 64-pin LQFP package with specific peripheral pin mappings defined in its datasheet. Migration to other packages requires PCB redesign and firmware adaptation due to differences in GPIO assignment and peripheral availability in the TM4C1231E6PMI7R.
TM4C1231E6PMI7R 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
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, WDT
- Number of I/O:
- 43
- Program Memory Size:
- 128KB (128K 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 22x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
TM4C1231E6PMI7R FAQ
1.How can I place an order for TM4C1231E6PMI7R through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1231E6PMI7R 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 TM4C1231E6PMI7R reliable?
The price and inventory of TM4C1231E6PMI7R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1231E6PMI7R is usually 5 days.
3.What payment methods are accepted for TM4C1231E6PMI7R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1231E6PMI7R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1231E6PMI7R?
TM4C1231E6PMI7R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1231E6PMI7R 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 TM4C1231E6PMI7R?
For technical support, including TM4C1231E6PMI7R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1231E6PMI7R requirements.
6.How does Aetrix verify that TM4C1231E6PMI7R is sourced from the original manufacturer or authorized distributors?
All TM4C1231E6PMI7R 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 TM4C1231E6PMI7R meets industry standards.
7.What is the process for return or replacement of TM4C1231E6PMI7R?
All TM4C1231E6PMI7R units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1231E6PMI7R, 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 TM4C1231E6PMI7R part is unused and in its original packaging.
Return procedure for TM4C1231E6PMI7R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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