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Texas Instruments TM4C1231E6PMI
- Part No.:
- TM4C1231E6PMI
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
TM4C1231E6PMI.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:140
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Product details
Overview
TM4C1231E6PMI 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, designed for real-time embedded control in industrial automation and sensor gateway applications.
For engineers reviewing the TM4C1231E6PMI datasheet, TM4C1231E6PMI pinout, TM4C1231E6PMI application, or TM4C1231E6PMI equivalent, this page delivers verified electrical specs, package mapping, debug interface support, analog peripheral capability, and validated alternative MCUs for migration or second-sourcing.
Technical Context
The TM4C1231E6PMI integrates a single-core ARM Cortex-M4F CPU with hardware floating-point unit (FPU), supporting Thumb-2 and DSP instructions. It features a 32-bit bus architecture, NVIC with 64 interrupt lines, and memory protection unit (MPU) for secure task isolation.
System-level integration includes a 12-channel μDMA controller, hibernation module with RTC and battery-backed memory, and dual 12-bit ADCs with up to 1MSPS sampling rate across 16 channels. 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 deterministic real-time control with FPU-accelerated math for motor control or sensor fusion. |
| Flash / SRAM | 256 KB flash / 32 KB SRAM - sufficient for standalone firmware with bootloader, USB stack, and application logic without external memory. |
| ADC | Dual 12-bit, 1 MSPS, 16-channel - supports simultaneous sampling of multiple analog sensors (e.g., temperature, current, voltage) in industrial monitoring. |
| USB Interface | USB 2.0 Device (Full-Speed) - enables direct PC connectivity for configuration, firmware updates, or data logging without external transceivers. |
| Package & Temp | 64-pin LQFP, –40°C to +105°C - suitable for extended-temperature industrial environments with standard surface-mount assembly. |
| Debug Interface | JTAG + SWD - provides full-cycle development support including breakpoints, watchpoints, and real-time variable inspection via TI's Code Composer Studio. |
| Timers | 6 × 32-bit GPTMs (12 × 16-bit), WDT, SysTick - enables precise PWM generation, input capture, quadrature decoding, and system watchdog coverage. |
Pinout & Package
TM4C1231E6PMI is housed in a 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per TI SPMS336E datasheet Rev E (June 2014), Table 4-1 "Signal Descriptions" and Figure 4-1 "Pin Diagram".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / VDDA / VDDC | Power supply inputs | Separate domains for digital core (VDDC), analog (VDDA), and I/O (VDD); decoupling required per datasheet Section 7.2. |
| GND / GNDA / GNDC | Ground returns | Dedicated analog (GNDA), core (GNDC), and I/O (GND) grounds minimize noise coupling into ADC and PLL circuits. |
| USB0VBUS / USB0ID | USB detection pins | Enable host/device mode auto-detection and VBUS presence sensing for compliant USB enumeration. |
| PD0–PD7 / PE0–PE5 | GPIO with alternate functions | Support UART0/1, I2C0/1, SSI0/1, CAN0, PWM outputs, and ADC0/1 inputs - enabling flexible peripheral routing without PCB redesign. |
| SWCLK / SWDIO | ARM Serial Wire Debug | Two-pin debug interface replacing JTAG for reduced footprint; fully compatible with TI XDS110 and CMSIS-DAP debuggers. |
Key Features
| Feature | Design Value |
|---|---|
| Hibernation Module | Retains RTC, battery-backed RAM, and wake-on-external-interrupt while drawing ≤1.6 µA - extends battery life in remote sensor nodes. |
| μDMA Controller | 12-channel, scatter-gather capable - offloads CPU during ADC sampling, UART transfers, or PWM updates, reducing latency and jitter. |
| Analog Integration | Two independent 12-bit ADCs with hardware averaging, temperature sensor, and digital comparators - eliminates need for external signal conditioning in basic monitoring systems. |
| Peripheral Multiplexing | Each GPIO pin supports ≥5 alternate functions - allows dynamic reconfiguration of UART/I2C/SSI/CAN on shared pins, optimizing BOM count and layout flexibility. |
| TivaWare Support | TI-provided driver library with HAL APIs, USB stack, and FreeRTOS port - accelerates firmware development and ensures register-level compatibility across TM4C family. |
Applications
| Industrial Motor Control | Smart Sensor Gateway |
|---|---|
|
Use Scenario: Closed-loop control of BLDC motors using field-oriented control (FOC) algorithms requiring high-speed ADC sampling and precise PWM timing. IC Role / Device Role / Timing Role: Real-time computation engine executing FOC loops at 20 kHz, managing gate drivers via PWM outputs, and monitoring phase currents via dual ADCs. Use Value: On-chip FPU and deterministic interrupt latency (<12 cycles) enable accurate torque/current regulation without external DSP or FPGA. |
Use Scenario: Aggregating data from multiple analog and digital sensors (e.g., temperature, humidity, pressure) and transmitting over USB or UART to edge controller. IC Role / Device Role / Timing Role: Central data acquisition and protocol translation unit, performing ADC conversion, sensor calibration, and USB CDC communication. Use Value: Integrated USB device + dual ADC + hibernation allows self-contained, low-power, plug-and-play sensor node deployment without external PHY or memory. |
| Programmable Logic Controller (PLC) I/O Module | Energy Monitoring Endpoint |
|
Use Scenario: Digital I/O expansion with configurable input filtering, output drive strength, and interrupt-on-change for discrete factory automation signals. IC Role / Device Role / Timing Role: Deterministic I/O manager handling 32+ digital inputs/outputs with sub-microsecond response to edge-triggered events. Use Value: GPIO commit registers and programmable slew rate control ensure EMI-compliant switching and noise immunity in electrically noisy plant-floor environments. |
Use Scenario: Measuring AC line voltage and current using isolated shunt/sensor interfaces, computing RMS, power factor, and energy consumption. IC Role / Device Role / Timing Role: Precision analog front-end processor synchronizing dual ADC sampling to zero-crossing detection for harmonic analysis. Use Value: Hardware-averaged 12-bit ADCs with 1 MSPS throughput deliver ±0.5% RMS accuracy at 50/60 Hz without oversampling firmware overhead. |
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 → 256 KB same), but adds Ethernet MAC, additional UART/SSI, and 64 KB SRAM - no hibernation current advantage. | Targeted at networked edge devices requiring wired connectivity; lacks optimized ultra-low-power hibernation path of TM4C1231E6PMI. | Select when Ethernet or extra peripherals outweigh hibernation efficiency needs. |
| STM32F401CEU6 | ARM Cortex-M4F @ 84 MHz, 512 KB flash, 96 KB SRAM, but no native USB device PHY - requires external transceiver for USB. | Better suited for cost-sensitive consumer applications with high code density needs; lacks integrated hibernation RTC and battery-backed RAM. | Choose for higher memory headroom and ST ecosystem tools, accepting added BOM complexity for USB. |
Compared with TM4C123GH6PM and STM32F401CEU6, the TM4C1231E6PMI offers superior integration for battery-powered sensor endpoints due to its dedicated hibernation module, on-die USB PHY, and optimized analog subsystem - reducing external components and power management ICs.
Availability
TM4C1231E6PMI is available at Aetrix Electronics and suitable for industrial motor control, smart sensor gateways, and PLC I/O modules requiring stable component supply, long-term lifecycle assurance, and qualified automotive/industrial temperature grade parts.
Supply support for TM4C1231E6PMI 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, with decades of experience in industrial and automotive-grade MCU design.
The TM4C1231E6PMI belongs to TI's Tiva C Series, engineered specifically for cost-sensitive, real-time embedded applications demanding robust analog integration, low-power operation, and seamless USB connectivity - not general-purpose computing.
FAQ
What is the maximum operating frequency of the TM4C1231E6PMI?
The TM4C1231E6PMI operates at a maximum system clock frequency of 80 MHz, achieved via its integrated PLL that accepts input from internal precision oscillator (PIOSC) or external crystal (4–25 MHz). This frequency is fully supported across all peripherals and memory interfaces per TI SPMS336E datasheet Section 5.2.5, and enables deterministic execution of time-critical tasks such as motor control loops or high-speed data acquisition without overclocking risk.
Does the TM4C1231E6PMI include an integrated USB physical layer?
Yes, the TM4C1231E6PMI integrates a full-speed USB 2.0 device PHY compliant with USB Specification Revision 2.0. It supports USB device modes including CDC, HID, and MSC classes without requiring external transceivers. The USB0VBUS and USB0ID pins provide hardware-level VBUS detection and ID pin sensing, enabling automatic host/device role negotiation as documented in Section 14 of the SPMS336E datasheet.
What debug interfaces does the TM4C1231E6PMI support?
The TM4C1231E6PMI supports both 4-wire JTAG and 2-wire Serial Wire Debug (SWD) interfaces. SWD uses SWCLK and SWDIO pins and is fully compatible with TI's XDS110 debug probe and open-source CMSIS-DAP tools. All debug features - including breakpoints, watchpoints, memory inspection, and real-time variable tracking - are accessible through TI Code Composer Studio and third-party IDEs using the ARM CoreSight debug architecture.
How much SRAM and flash memory does the TM4C1231E6PMI have?
The TM4C1231E6PMI contains 32 KB of on-chip SRAM and 256 KB of single-bank flash memory. The flash supports in-application programming (IAP) and has error correction coding (ECC) enabled by default. SRAM is split into contiguous blocks usable for stack, heap, and DMA buffers, with no memory-mapped peripheral aliasing - confirmed in Section 8.2 of the SPMS336E datasheet.
Is the TM4C1231E6PMI qualified for extended temperature operation?
Yes, the TM4C1231E6PMI is rated for operation from –40°C to +105°C ambient temperature, meeting industrial-grade reliability requirements. This rating applies to the full 64-pin LQFP package variant (suffix 'I'), with thermal performance validated under JEDEC JESD22-A104 temperature cycling and JESD22-A108 high-temperature operating life testing per TI's production qualification report.
TM4C1231E6PMI 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:
TM4C1231E6PMI FAQ
1.How can I place an order for TM4C1231E6PMI through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1231E6PMI 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 TM4C1231E6PMI reliable?
The price and inventory of TM4C1231E6PMI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1231E6PMI is usually 5 days.
3.What payment methods are accepted for TM4C1231E6PMI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1231E6PMI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1231E6PMI?
TM4C1231E6PMI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1231E6PMI 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 TM4C1231E6PMI?
For technical support, including TM4C1231E6PMI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1231E6PMI requirements.
6.How does Aetrix verify that TM4C1231E6PMI is sourced from the original manufacturer or authorized distributors?
All TM4C1231E6PMI 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 TM4C1231E6PMI meets industry standards.
7.What is the process for return or replacement of TM4C1231E6PMI?
All TM4C1231E6PMI units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1231E6PMI, 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 TM4C1231E6PMI part is unused and in its original packaging.
Return procedure for TM4C1231E6PMI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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