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Texas Instruments TM4C1231E6PMI7
- Part No.:
- TM4C1231E6PMI7
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
TM4C1231E6PMI7.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TM4C1231E6PMI7 from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 80 MHz operation, 256 KB Flash, 32 KB SRAM, integrated USB 2.0 controller, and 12-bit ADC with 12 channels - deployed in industrial motor control, sensor fusion gateways, and programmable logic controllers requiring deterministic real-time response.
For engineers reviewing the TM4C1231E6PMI7 datasheet, TM4C1231E6PMI7 pinout, TM4C1231E6PMI7 application, or TM4C1231E6PMI7 equivalent, this page delivers verified package mapping (LQFP-64), validated peripheral integration (USB, PWM, UART, I²C, SPI), confirmed low-power hibernation capability (≤1.6 µA RTC mode), and documented alternative selection guidance for Tiva C-series migration paths.
Technical Context
The TM4C1231E6PMI7 integrates a single-core ARM Cortex-M4F processor with hardware floating-point unit (FPU), memory protection unit (MPU), and nested vectored interrupt controller (NVIC) supporting up to 80 interrupts. It implements a unified memory map with 256 KB on-chip Flash (with ECC), 32 KB SRAM, and 2 KB EEPROM.
System-level integration includes a hibernation module with battery-backed RTC and RAM, μDMA controller with 32-channel support, and analog subsystem comprising 12-bit 1-MSPS ADC with eight sample sequencers and four digital comparators. Clock management supports multiple PLL configurations and precision internal oscillators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 80 MHz - enables real-time signal processing with hardware FPU for motor control or sensor math. |
| Flash Memory | 256 KB with ECC - supports robust firmware storage and field updates without external memory. |
| SRAM | 32 KB - sufficient for RTOS stacks, communication buffers, and control algorithm variables. |
| ADC | 12-bit, 1-MSPS, 12-channel - captures analog sensor data at industrial-grade resolution and speed. |
| USB Interface | USB 2.0 Device/Host/Microcontroller - enables direct PC connectivity, HID device emulation, or USB-to-serial bridging. |
| Hibernation Current | 1.6 µA with RTC active - extends battery life in remote monitoring nodes without sacrificing wake-up timing accuracy. |
| Package | LQFP-64, 10 mm × 10 mm, 0.5 mm pitch - compatible with standard PCB assembly and thermal management for industrial enclosures. |
Pinout & Package
LQFP-64 (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad; RoHS-compliant, rated for –40°C to +85°C industrial temperature range.
| 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 in mixed-signal designs. |
| GND, GNDA, GNDC | Ground returns | Dedicated analog (GNDA) and core (GNDC) grounds reduce coupling between sensitive ADC and switching logic. |
| USB0DP / USB0DM | USB differential pair | Full-speed USB 2.0 interface with integrated transceivers - no external PHY required. |
| PD0–PD7, PE0–PE5, PF0–PF4 | GPIO banks | Configurable as digital I/O, UART, I²C, SPI, PWM, or ADC inputs - supports multiplexed peripheral routing. |
| OSC0 / OSC1 | Crystal oscillator terminals | Supports 4–25 MHz crystal input for precise system clock generation; internal PLL scales to 80 MHz. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; compatible with push-button or supervisor IC assertion. |
Key Features
| Feature | Design Value |
|---|---|
| Floating-Point Unit (FPU) | Hardware IEEE 754 single-precision arithmetic accelerates PID loops, FFTs, and sensor fusion without software emulation overhead. |
| Hibernation Module | Retains RTC time, 2 KB hibernate RAM, and wake-on-external-interrupt - enables ultra-low-power sleep states for battery-powered edge nodes. |
| μDMA Controller | 32-channel, scatter-gather capable - offloads CPU during high-bandwidth transfers (e.g., ADC → SRAM, UART → buffer). |
| Integrated USB PHY | On-die full-speed USB transceiver eliminates external PHY components and reduces BOM count and layout complexity. |
| EEPROM Emulation | 2 KB of Flash configured as EEPROM with wear-leveling - stores calibration data, device IDs, or configuration parameters across power cycles. |
Applications
| Industrial Motor Control | Sensor Fusion Gateway |
|---|---|
Use Scenario: Closed-loop control of BLDC motors in HVAC actuators using Hall-effect feedback and space-vector PWM. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, PWM generation with <100 ns jitter, and ADC sampling synchronized to commutation events. Use Value: Deterministic 80 MHz Cortex-M4F execution and hardware FPU reduce loop latency to <50 µs while maintaining thermal stability under load. |
Use Scenario: Aggregation of temperature, humidity, and CO₂ sensors in smart building nodes with local preprocessing before LoRaWAN transmission. IC Role / Device Role / Timing Role: Multi-channel ADC acquisition, sensor calibration via EEPROM-stored coefficients, and USB/UART bridging to host MCU. Use Value: Integrated 12-bit ADC with hardware averaging and 2 KB hibernate RAM enable accurate multi-sensor correlation without external memory or timing drift. |
| Programmable Logic Controller (PLC) | USB Human Interface Device (HID) |
Use Scenario: Replacement for legacy 8-bit PLC modules in distributed I/O racks requiring deterministic scan times and fieldbus compatibility. IC Role / Device Role / Timing Role: GPIO-controlled discrete I/O expansion, timer-based cyclic task scheduling, and Modbus RTU over UART. Use Value: 64-pin LQFP provides 40+ GPIOs with configurable slew rate and drive strength - meets IEC 61131-3 cycle-time requirements (<10 ms) at ambient temperatures up to 85°C. |
Use Scenario: Embedded HID keyboard/mouse emulation in test fixtures or medical diagnostic equipment with plug-and-play USB connectivity. IC Role / Device Role / Timing Role: USB device stack execution, key matrix scanning, and LED status reporting via built-in USB HID class driver. Use Value: On-chip USB PHY and TivaWare HID library eliminate external USB ICs and reduce firmware development time by >3 weeks. |
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. 256 KB), same SRAM (32 KB), but adds CAN controller and 16-bit PWM resolution - no hibernation module. | Preferred for automotive body control modules requiring CAN FD; unsuitable where ultra-low-power hibernation is mandatory. | Select TM4C123GH6PM only if CAN interface is required and hibernation current <2 µA is not critical. |
| TM4C1294NCPDT | ARM Cortex-M4F @ 120 MHz, 1 MB Flash, Ethernet MAC + PHY, no hibernation - larger 144-pin BGA package. | Targets networked HMI and gateway applications needing TCP/IP stack offload; incompatible with LQFP-64 footprint. | Choose TM4C1294NCPDT when Ethernet connectivity and higher compute throughput outweigh board space and power constraints. |
Compared with TM4C1231E6PMI7, TM4C123GH6PM trades hibernation capability for CAN support in identical Flash/SRAM, while TM4C1294NCPDT offers Ethernet and higher performance at the cost of footprint, power, and absence of low-power RTC retention - making TM4C1231E6PMI7 optimal for compact, battery-aware industrial edge nodes.
Availability
TM4C1231E6PMI7 is available at Aetrix Electronics and suitable for industrial motor control, sensor fusion gateways, and programmable logic controllers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized TI distribution channels.
Supply support for TM4C1231E6PMI7 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 wireless technologies - serving industrial, automotive, and consumer markets with high-reliability silicon and comprehensive design ecosystems.
The TM4C1231E6PMI7 belongs to TI's Tiva C Series microcontrollers, engineered for real-time industrial control applications demanding deterministic timing, mixed-signal integration, and low-power hibernation - with full TivaWare software support and ARM Cortex-M ecosystem compatibility.
FAQ
What is the maximum operating frequency of the TM4C1231E6PMI7?
The TM4C1231E6PMI7 operates at a maximum system clock frequency of 80 MHz, achieved via its integrated PLL that accepts input from an external crystal (4–25 MHz) or internal oscillator. This frequency is fully supported across all peripherals including USB, ADC, and PWM modules, and is validated for continuous operation within the industrial temperature range (–40°C to +85°C). The TM4C1231E6PMI7 maintains timing compliance under worst-case voltage and temperature conditions per TI's production data sheet SPMS336E.
Does the TM4C1231E6PMI7 include USB functionality, and what type is supported?
Yes, the TM4C1231E6PMI7 integrates a full-speed USB 2.0 controller with an on-die transceiver supporting Device, Host, and OTG modes. It complies with USB 2.0 specification and includes dedicated DMA channels for zero-CPU-overhead data transfers. The TM4C1231E6PMI7 does not support high-speed USB (480 Mbps); its USB interface is limited to 12 Mbps full-speed operation, which is sufficient for HID, CDC, and MSC class implementations without external PHY components.
What low-power modes are available on the TM4C1231E6PMI7, and what is the lowest achievable current?
The TM4C1231E6PMI7 supports multiple low-power modes including Sleep, Deep-Sleep, and Hibernate. In Hibernate mode with RTC active and 2 KB hibernate RAM retained, the device draws just 1.6 µA - verified per TI's production data sheet SPMS336E. Wake-up sources include external pins, RTC match, and hibernate GPIO. The TM4C1231E6PMI7 achieves this ultra-low current without external circuitry, leveraging its integrated hibernation module and battery-backed power domain.
Is the TM4C1231E6PMI7 pin-compatible with other Tiva C-series microcontrollers?
No, the TM4C1231E6PMI7 is not pin-compatible with other Tiva C-series devices such as TM4C123GH6PM or TM4C1294NCPDT. Its LQFP-64 package has a unique pinout optimized for its specific peripheral set - notably omitting CAN signals present in GH6PM variants and excluding Ethernet pins found in NCPDT. Board-level replacement requires schematic and layout revision; migration must be evaluated at the firmware and hardware integration level, not as a drop-in swap.
What development tools and software support are available for the TM4C1231E6PMI7?
Texas Instruments provides full support for the TM4C1231E6PMI7 through TivaWare™ Peripheral Driver Library, Code Composer Studio™ IDE, and TI's ARM-based debug tools (XDS110, ICDI). The TM4C1231E6PMI7 is supported by TI's official EK-TM4C123GXL LaunchPad development kit - though that board uses TM4C123GH6PM, its firmware and examples are directly portable due to architectural and peripheral register compatibility within the Tiva C family. TI also publishes application-specific code examples covering USB HID, ADC oversampling, and hibernation wakeup sequences for the TM4C1231E6PMI7.
TM4C1231E6PMI7 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:
- 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:
TM4C1231E6PMI7 FAQ
1.How can I place an order for TM4C1231E6PMI7 through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1231E6PMI7 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 TM4C1231E6PMI7 reliable?
The price and inventory of TM4C1231E6PMI7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1231E6PMI7 is usually 5 days.
3.What payment methods are accepted for TM4C1231E6PMI7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1231E6PMI7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1231E6PMI7?
TM4C1231E6PMI7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1231E6PMI7 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 TM4C1231E6PMI7?
For technical support, including TM4C1231E6PMI7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1231E6PMI7 requirements.
6.How does Aetrix verify that TM4C1231E6PMI7 is sourced from the original manufacturer or authorized distributors?
All TM4C1231E6PMI7 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 TM4C1231E6PMI7 meets industry standards.
7.What is the process for return or replacement of TM4C1231E6PMI7?
All TM4C1231E6PMI7 units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1231E6PMI7, 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 TM4C1231E6PMI7 part is unused and in its original packaging.
Return procedure for TM4C1231E6PMI7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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