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Texas Instruments TM4C1231D5PMI7R
- Part No.:
- TM4C1231D5PMI7R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
TM4C1231D5PMI7R.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TM4C1231D5PMI7R 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 OTG, two CAN 2.0A/B controllers, and 12-bit ADC with 12 channels - deployed in industrial motor control, smart sensor nodes, and USB-connected embedded gateways.
For engineers reviewing the TM4C1231D5PMI7R datasheet, TM4C1231D5PMI7R pinout, TM4C1231D5PMI7R application, or TM4C1231D5PMI7R equivalent, key selection criteria include USB device/host capability, dual-CAN bus support, hibernation-mode power management (1.1 µA RTC+hibernate), 12-bit ADC sampling rate (1 MSPS), and TivaWare™ software stack compatibility.
Technical Context
The TM4C1231D5PMI7R integrates a single-core ARM Cortex-M4F with hardware floating-point unit (FPU), memory protection unit (MPU), and nested vectored interrupt controller (NVIC). It supports Thumb-2 instruction set, 24-bit SysTick timer, and vector table relocation for bootloader flexibility.
System-level integration includes a programmable clock tree with PLL, multiple low-power modes (sleep, deep-sleep, hibernate), and peripheral-specific clock gating. The hibernation module features battery-backed RTC, 2 KB hibernate RAM, and wake-up via external pin, RTC match, or GPIO event.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 80 MHz - enables real-time signal processing with FPU-accelerated math and deterministic interrupt latency. |
| Memory | 256 KB flash + 32 KB SRAM + 2 KB hibernate RAM - sufficient for field-upgradable firmware with retained state during ultra-low-power sleep. |
| ADC | 12-bit, 12-channel, 1 MSPS - supports simultaneous sampling of motor phase currents or multi-sensor analog inputs. |
| Communication | USB 2.0 OTG, 2× CAN 2.0A/B, 6× UART, 4× SPI, 4× I²C - enables mixed-protocol industrial edge node connectivity. |
| Power Modes | Hibernate (1.1 µA), Deep Sleep (3.2 µA), Sleep (65 µA) - allows battery-powered operation >1 year on coin cell with periodic wake-up. |
| Package | 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch) - compatible with standard PCB assembly and offers full peripheral pin access. |
| Temperature Range | –40°C to +85°C - qualified for industrial ambient environments without derating. |
Pinout & Package
TM4C1231D5PMI7R is housed in a 64-pin LQFP package (package code: PM), with exposed thermal pad (EP) connected to ground for enhanced thermal dissipation in continuous operation.
| 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 (GNDA) and core (GNDC) grounds reduce coupling between high-speed logic and precision analog circuits. |
| USB0VBUS, USB0ID, USB0DP, USB0DM | USB 2.0 OTG interface | Full-speed USB device/host/OTG support with internal transceivers - no external PHY required. |
| CAN0RX, CAN0TX, CAN1RX, CAN1TX | CAN 2.0A/B transceiver I/O | Dual independent CAN controllers with dedicated pins - supports redundant bus or multi-network topology. |
| SSI0CLK, SSI0FSS, SSI0RX, SSI0TX | SPI master/slave interface | Four-wire synchronous serial interface with programmable clock polarity/phase - interoperable with sensors, displays, and flash memory. |
| U0RX, U0TX, U1RX, U1TX | UART transmit/receive | Two independent UARTs with full modem control signals - suitable for debug console and RS-485 communication simultaneously. |
Key Features
| Feature | Design Value |
|---|---|
| Hibernate module with RTC | Retains timekeeping and 2 KB RAM at 1.1 µA - enables long-term data logging without external RTC or backup battery circuitry. |
| USB 2.0 OTG controller | Integrated PHY and DMA support - eliminates need for external USB transceiver and reduces BOM cost and board space. |
| Dual CAN 2.0A/B controllers | Independent message RAM, filters, and FIFOs - allows concurrent CAN FD-ready networks (with external transceivers) or legacy CAN bus redundancy. |
| Programmable clock system | Multiple PLL sources (external crystal, internal oscillator, PIOSC), configurable dividers, and per-peripheral clock gating - simplifies timing design across mixed-speed peripherals. |
| TivaWare™ Peripheral Driver Library | Production-ready C APIs for all on-chip peripherals - accelerates development of USB CDC, CAN bootloader, and ADC-triggered PWM applications. |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
|
Use Scenario: Closed-loop BLDC motor drive with current sensing, position feedback, and field-oriented control (FOC). IC Role / Device Role / Timing Role: Real-time computation engine executing FOC algorithm, PWM generation, ADC sampling synchronization, and CAN bus telemetry. Use Value: 80 MHz Cortex-M4F with FPU delivers <10 µs current loop execution; dual CAN interfaces enable motor command and status reporting on separate buses. |
Use Scenario: Battery-powered environmental monitoring node measuring temperature, humidity, and air quality with local data aggregation. IC Role / Device Role / Timing Role: System controller managing sensor I²C/SPI reads, ADC conversions, hibernation scheduling, and USB/UART data upload. Use Value: Hibernate mode draws only 1.1 µA while maintaining RTC and 2 KB RAM - extends coin-cell life beyond 2 years with hourly wake-up cycles. |
| USB-Connected Gateway | Automotive Diagnostic Tool |
|
Use Scenario: Field-deployable gateway bridging CAN bus diagnostics to PC via USB virtual COM port. IC Role / Device Role / Timing Role: Protocol translator with USB CDC ACM class implementation and dual-CAN message buffering/filtering. Use Value: Integrated USB 2.0 OTG + dual CAN eliminates external bridge ICs; TivaWare USB stack provides certified CDC device enumeration out-of-box. |
Use Scenario: Handheld OBD-II scanner supporting ISO 15765-2 (CAN), ISO 9141-2 (K-Line), and SAE J1850 VPW/PWM protocols. IC Role / Device Role / Timing Role: Multi-protocol diagnostic controller with configurable UART baud rates, CAN bit timing, and K-Line line driver control. Use Value: Four UARTs (two with IrDA/SIR support) and dual CAN allow simultaneous protocol probing without multiplexing delays or external level shifters. |
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, 1 MB ROM bootloader, and 10/100 PHY interface - larger die, higher power in active mode. | Targeted at wired industrial Ethernet gateways; lacks hibernate optimization focus of TM4C1231D5PMI7R. | Select when Ethernet connectivity is mandatory and hibernate current is secondary. |
| STM32F407VGT6 | ARM Cortex-M4F @ 168 MHz, 1 MB flash, no integrated USB PHY (requires external), no hibernate mode - uses standard stop modes instead. | Better raw compute throughput but requires external USB transceiver and external RTC for long-term timekeeping. | Select when maximum CPU performance and large code footprint are critical, and USB/RTC integration is handled externally. |
Compared with TM4C123GH6PM and STM32F407VGT6, the TM4C1231D5PMI7R delivers optimal balance of USB/CAN integration, ultra-low-power hibernation, and production-ready TivaWare support - making it preferred for cost-sensitive, battery-aware, multi-bus edge devices where BOM count and firmware maturity matter.
Availability
TM4C1231D5PMI7R is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, USB-connected gateways, and automotive diagnostic tools requiring stable component supply and long-term lifecycle assurance.
Supply support for TM4C1231D5PMI7R 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 automotive and industrial qualification expertise.
The TM4C1231D5PMI7R belongs to TI's Tiva C Series microcontrollers - designed specifically for cost-effective, low-power, protocol-rich embedded applications where USB, CAN, and hibernation capabilities are essential.
FAQ
What is the maximum operating frequency of the TM4C1231D5PMI7R?
The TM4C1231D5PMI7R operates at a maximum CPU frequency of 80 MHz using its internal PLL, which can be driven by an external 4–25 MHz crystal or the internal precision oscillator. This frequency is fully supported across the entire industrial temperature range (–40°C to +85°C) and enables deterministic real-time execution for motor control and protocol stacks. The TM4C1231D5PMI7R maintains timing compliance without derating under worst-case voltage and temperature conditions.
Does the TM4C1231D5PMI7R include an integrated USB physical layer?
Yes, the TM4C1231D5PMI7R integrates a full-speed USB 2.0 OTG physical layer (PHY) with internal termination resistors and differential drivers - eliminating the need for external USB transceivers in most designs. This integration reduces BOM cost and PCB area while enabling USB device, host, and OTG functionality directly from the TM4C1231D5PMI7R pins USB0DP and USB0DM.
How much hibernate-mode current does the TM4C1231D5PMI7R consume?
The TM4C1231D5PMI7R consumes 1.1 µA in hibernate mode with RTC enabled and 2 KB of hibernate RAM retained - measured at 3.3 V and 25°C. This ultra-low quiescent current allows multi-year operation on a CR2032 coin cell when paired with periodic wake-up intervals. The TM4C1231D5PMI7R achieves this via dedicated hibernate domain power gating and optimized RTC oscillator circuitry.
Can the TM4C1231D5PMI7R support both CAN 2.0A and CAN 2.0B frames simultaneously?
Yes, each of the two CAN controllers in the TM4C1231D5PMI7R independently supports full CAN 2.0A (11-bit ID) and CAN 2.0B (29-bit ID) frame formats, including extended filtering, message objects, and FIFO buffering. The TM4C1231D5PMI7R allows one CAN port to operate in standard mode while the other runs extended mode - ideal for hybrid network architectures such as automotive body control with legacy and modern ECUs.
Is TivaWare™ software support available for the TM4C1231D5PMI7R?
Yes, the TM4C1231D5PMI7R is fully supported by Texas Instruments' TivaWare™ Peripheral Driver Library, including production-grade drivers for USB, CAN, ADC, PWM, and hibernate modules - all with source code, examples, and CMSIS-compliant API documentation. TI provides ongoing maintenance updates for the TM4C1231D5PMI7R through the official TivaWare release channel.
TM4C1231D5PMI7R 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:
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
TM4C1231D5PMI7R FAQ
1.How can I place an order for TM4C1231D5PMI7R through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1231D5PMI7R 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 TM4C1231D5PMI7R reliable?
The price and inventory of TM4C1231D5PMI7R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1231D5PMI7R is usually 5 days.
3.What payment methods are accepted for TM4C1231D5PMI7R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1231D5PMI7R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1231D5PMI7R?
TM4C1231D5PMI7R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1231D5PMI7R 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 TM4C1231D5PMI7R?
For technical support, including TM4C1231D5PMI7R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1231D5PMI7R requirements.
6.How does Aetrix verify that TM4C1231D5PMI7R is sourced from the original manufacturer or authorized distributors?
All TM4C1231D5PMI7R 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 TM4C1231D5PMI7R meets industry standards.
7.What is the process for return or replacement of TM4C1231D5PMI7R?
All TM4C1231D5PMI7R units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1231D5PMI7R, 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 TM4C1231D5PMI7R part is unused and in its original packaging.
Return procedure for TM4C1231D5PMI7R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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