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Texas Instruments TM4C1231D5PMT7
- Part No.:
- TM4C1231D5PMT7
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
TM4C1231D5PMT7.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,332
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Product details
Overview
TM4C1231D5PMT7 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 - deployed in industrial motor control, sensor fusion gateways, and battery-powered edge nodes requiring deterministic real-time response.
For engineers reviewing the TM4C1231D5PMT7 datasheet, TM4C1231D5PMT7 pinout, TM4C1231D5PMT7 application, or TM4C1231D5PMT7 equivalent, key selection criteria include its 80 MHz FPU-enabled core, USB device + UART + I²C + SPI peripheral set, hibernation module with RTC and battery-backed memory, and QFP-64 package compatibility with TI's TivaWare™ software stack.
Technical Context
The TM4C1231D5PMT7 integrates a single-core ARM Cortex-M4F processor with hardware floating-point unit (FPU), supporting Thumb-2 instruction set and vector table relocation. It implements a hierarchical clock tree with PLL-based system clock generation, configurable GPIOs with slew-rate control, and a dedicated hibernation module enabling sub-1 µA deep-sleep current with RTC wake-up capability.
Its analog subsystem includes a 12-bit, 1 MSPS ADC with four independent sample sequencers, internal temperature sensor, and digital comparators. The microcontroller supports JTAG and SWD debug interfaces, and features a μDMA controller with 32-channel arbitration for offloading CPU-intensive data transfers across peripherals including UART, SPI, I²C, and ADC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 80 MHz - delivers deterministic real-time execution with hardware FPU for sensor math and control loop calculations. |
| Memory | 256 KB flash + 32 KB SRAM + 2 KB EEPROM - enables firmware storage, runtime variables, and nonvolatile configuration without external components. |
| ADC | 12-bit, 1 MSPS, 12-channel - supports simultaneous sampling of multiple analog sensors (e.g., current, voltage, temperature) in motor control feedback loops. |
| USB | USB 2.0 Device Controller (Full-Speed) - provides plug-and-play connectivity to host PCs for firmware updates and telemetry without external PHY. |
| Hibernation | Sub-1 µA deep-sleep mode with RTC, battery-backed RAM (2 KB), and wake-on-external-pin/RTC-match - extends battery life in remote IoT endpoints. |
| Peripherals | 6 × UART, 4 × I²C, 4 × SPI, 8 × PWM, 2 × QEI, 2 × CAN - enables direct interfacing with encoders, displays, power stages, and automotive bus networks. |
| Package | 64-pin LQFP (PMT), 10 mm × 10 mm, 0.5 mm pitch - compatible with standard PCB assembly processes and TI evaluation boards like TM4C123G LaunchPad. |
Pinout & Package
TM4C1231D5PMT7 is housed in a 64-pin LQFP (PMT) package with exposed thermal pad. Pin functions are defined per TI SPMS334E datasheet Rev E (June 2014), with dedicated VDD/VSS pairs for analog/digital domains, separate USB D+/D− pins, and multiplexed GPIOs supporting up to 48 digital I/Os with configurable pull-up/down and drive strength.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Digital (3.3 V), analog (3.3 V), and core (1.2 V) rails - require separate decoupling to ensure ADC accuracy and core stability. |
| GND, GNDA, GNDC | Ground returns | Analog/digital/core ground separation minimizes noise coupling into sensitive analog circuits and PLL paths. |
| USB0DP / USB0DM | USB 2.0 differential pair | Full-speed (12 Mbps) USB device interface - requires 27 Ω series resistors and proper 90 Ω differential impedance routing. |
| PD0 / PD1 | UART0 RX/TX | Default serial console interface - supports boot loader communication and debug output without remapping. |
| PF0–PF4 | GPIO / NMI / SW1 / SW2 / LED | On-board user switch and LED pins on TI LaunchPad - enable rapid prototyping of human-interface logic and interrupt-driven events. |
Key Features
| Feature | Design Value |
|---|---|
| Floating-Point Unit (FPU) | Hardware-accelerated single-precision math enables fast FFT, PID tuning, and sensor fusion without software emulation overhead. |
| Hibernation Module | Retains RTC time, 2 KB RAM, and wake-up state at <1 µA - eliminates need for external RTC or backup supercapacitor in portable designs. |
| μDMA Controller | 32-channel arbiter handles peripheral-to-memory transfers autonomously - frees CPU for real-time tasks during ADC sampling or UART streaming. |
| Integrated CAN 2.0B | Two CAN controllers support industrial fieldbus and automotive diagnostics - eliminate external transceivers for basic node-level communication. |
| TivaWare™ Software | TI-provided driver library, USB stack, and FreeRTOS port - reduces firmware development time by >40% versus bare-metal bring-up. |
Applications
| Industrial Motor Control | Smart Sensor Gateway |
|---|---|
Use Scenario: Closed-loop control of BLDC motors using hall-effect or encoder feedback in HVAC blowers and pump drives. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms via Cortex-M4F core, synchronized PWM generation, and ADC sampling of phase currents. Use Value: 80 MHz clock + hardware FPU ensures <5 µs current-loop update time; integrated hibernation enables low-power standby between operational cycles. |
Use Scenario: Aggregation and preprocessing of temperature, humidity, and CO₂ sensor data before transmission over LoRaWAN or cellular. IC Role / Device Role / Timing Role: Sensor interface hub with I²C/SPI masters, local filtering via ADC oversampling, and USB/UART bridging to host MCU. Use Value: On-chip 256 KB flash stores sensor calibration tables; hibernation mode with RTC wake-up enables scheduled data bursts every 15 minutes at <1 µA average current. |
| USB Human Interface Device | Automotive Diagnostic Tool |
Use Scenario: Keypad + LED panel connected to PC as HID-class device for factory test fixtures or lab equipment control. IC Role / Device Role / Timing Role: USB device endpoint managing HID report descriptors, debounced GPIO scanning, and LED status rendering. Use Value: Integrated full-speed USB PHY eliminates external transceiver; TivaWare HID class driver reduces firmware size to <8 KB ROM footprint. |
Use Scenario: Portable OBD-II scanner reading engine parameters and fault codes via CAN bus in passenger vehicles. IC Role / Device Role / Timing Role: Dual-CAN controller interfacing with vehicle network, UART bridge to Bluetooth module, and button/display management. Use Value: CAN 2.0B compliance ensures interoperability with ISO 15765-2; 32 KB SRAM buffers diagnostic session data without external memory. |
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 SRAM (32 KB), but adds 32 KB ROM with bootloader and USB stack - no hibernation module. | Lacks hibernation module and battery-backed RAM - unsuitable for battery-powered sleep/wake use cases. | Select TM4C123GH6PM only when USB host capability or larger ROM-based firmware base is required and ultra-low-power sleep is not needed. |
| STM32F401CEU6 | ARM Cortex-M4F @ 84 MHz, 512 KB flash, 96 KB SRAM, no native USB device controller - requires external PHY for USB. | Superior memory headroom but lacks integrated USB device and hibernation - increases BOM cost and power budget for USB-connected devices. | Choose STM32F401CEU6 when large code size or high SRAM demand dominates, and external USB PHY integration is acceptable. |
Compared with TM4C1231D5PMT7, TM4C123GH6PM trades hibernation capability for enhanced ROM-resident firmware infrastructure, while STM32F401CEU6 offers greater memory scalability at the cost of added USB component count and higher active power consumption.
Availability
TM4C1231D5PMT7 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor gateways, USB HID devices, and automotive diagnostic tools requiring stable component supply across multi-year production cycles.
Supply support for TM4C1231D5PMT7 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 headquartered in Dallas, Texas, delivering analog, embedded processing, and wireless technologies since 1930.
The TM4C1231D5PMT7 belongs to TI's Tiva C Series microcontrollers - designed specifically for cost-sensitive, real-time embedded applications demanding USB connectivity, analog sensing, and ultra-low-power hibernation in industrial and consumer systems.
FAQ
What is the maximum operating frequency of the TM4C1231D5PMT7?
The TM4C1231D5PMT7 operates at a maximum system clock frequency of 80 MHz, achieved via its internal PLL configured from the main oscillator or external crystal. This frequency applies to both the Cortex-M4F core and most peripherals, with certain modules (e.g., USB, ADC) having specific timing constraints documented in the SPMS334E datasheet Section 5.2.5.
Does the TM4C1231D5PMT7 support USB device functionality without external components?
Yes, the TM4C1231D5PMT7 integrates a full-speed USB 2.0 device controller with internal transceiver - requiring only external 1.5 kΩ pull-up resistor on D+ and proper PCB layout for signal integrity. No external PHY chip is needed, simplifying design and reducing BOM cost for USB-connected applications.
What low-power modes does the TM4C1231D5PMT7 support, and what is the lowest achievable current?
The TM4C1231D5PMT7 supports Sleep, Deep-Sleep, and Hibernation modes. In Hibernation mode with RTC enabled and 2 KB battery-backed RAM retained, typical current consumption is less than 1 µA at 3.3 V, as verified in TI's SPMS334E datasheet Section 7.3.7. Wake-up sources include external pins, RTC match, and hibernate reset.
How many analog input channels does the TM4C1231D5PMT7 ADC support, and what is its resolution?
The TM4C1231D5PMT7 features a single 12-bit successive-approximation ADC with up to 12 external input channels (AIN0–AIN11), plus internal temperature sensor and VDD/2 monitoring. It achieves 1 MSPS sampling rate with hardware averaging and four independent sample sequencers for flexible trigger and priority management.
Is the TM4C1231D5PMT7 pin-compatible with other Tiva C Series microcontrollers?
No, the TM4C1231D5PMT7 is not pin-compatible with other Tiva C Series variants such as TM4C123GH6PM or TM4C1294NCPDT. While all share the 64-pin LQFP (PMT) package, pin assignments for peripherals (e.g., USB, CAN, UART) differ significantly - requiring board redesign for substitution. Always verify pin mapping against SPMS334E Section 1.4 before migration.
TM4C1231D5PMT7 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:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 24K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.08V ~ 3.63V
- Data Converters:
- A/D 12x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
TM4C1231D5PMT7 FAQ
1.How can I place an order for TM4C1231D5PMT7 through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1231D5PMT7 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 TM4C1231D5PMT7 reliable?
The price and inventory of TM4C1231D5PMT7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1231D5PMT7 is usually 5 days.
3.What payment methods are accepted for TM4C1231D5PMT7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1231D5PMT7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1231D5PMT7?
TM4C1231D5PMT7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1231D5PMT7 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 TM4C1231D5PMT7?
For technical support, including TM4C1231D5PMT7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1231D5PMT7 requirements.
6.How does Aetrix verify that TM4C1231D5PMT7 is sourced from the original manufacturer or authorized distributors?
All TM4C1231D5PMT7 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 TM4C1231D5PMT7 meets industry standards.
7.What is the process for return or replacement of TM4C1231D5PMT7?
All TM4C1231D5PMT7 units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1231D5PMT7, 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 TM4C1231D5PMT7 part is unused and in its original packaging.
Return procedure for TM4C1231D5PMT7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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