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Texas Instruments TM4C1231E6PMIR
- Part No.:
- TM4C1231E6PMIR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
TM4C1231E6PMIR.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,016
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Product details
Overview
TM4C1231E6PMIR from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 80 MHz operation, 256 KB Flash, 32 KB SRAM, 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 embedded HMI systems.
For engineers reviewing the TM4C1231E6PMIR datasheet, TM4C1231E6PMIR pinout, TM4C1231E6PMIR application, or TM4C1231E6PMIR equivalent, key selection criteria include its dual-CAN interface, hibernation module with RTC and battery-backed memory, USB device/host/OTG capability, and support for TivaWare™ C Series software stack.
Technical Context
The TM4C1231E6PMIR integrates a 32-bit ARM Cortex-M4F core with hardware floating-point unit (FPU), enabling deterministic real-time signal processing and control loop execution. It supports Thumb-2 instruction set, NVIC with 80 interrupt lines, and SysTick timer for OS scheduling.
System-level integration includes a hibernation module with dedicated 32-bit RTC, battery-backed RAM (2 KB), and VDD3ON power mode for ultra-low-power wake-up; peripheral bus architecture uses AHB/APB bridges with configurable clock gating per module.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 80 MHz - delivers deterministic 1.25 DMIPS/MHz with single-cycle MAC and FPU for motor control math. |
| Memory | 256 KB on-chip Flash + 32 KB SRAM + 2 KB hibernation RAM - enables firmware updates without external storage and retains state during deep sleep. |
| Analog | 12-bit ADC, 12 channels, 1 MSPS sample rate - supports simultaneous sampling of multiple current/voltage sensors in closed-loop drives. |
| Connectivity | USB 2.0 OTG (device/host/OTG), 2× CAN 2.0A/B, 6× UART, 2× I²C, 2× SPI - provides native fieldbus and PC-comms in one chip. |
| Timers | 6× 32-bit general-purpose timers (12 PWM-capable channels), 1× watchdog, 1× hibernation RTC - enables multi-axis motion control and time-stamped event logging. |
| Power Modes | Active, Sleep, Deep-Sleep, Hibernate (2 µA typical) - allows battery-powered operation for >1 year with periodic sensor readouts. |
| Package | 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch) - compatible with standard PCB assembly and offers full peripheral pin access. |
Pinout & Package
TM4C1231E6PMIR is housed in a 64-pin LQFP package (package code: PM), RoHS-compliant, with exposed thermal pad. Pinout supports full GPIO remapping via GPIO AFSEL registers and configurable drive strength (2 mA / 4 mA / 8 mA).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Separate analog/digital/core domains enable noise isolation for ADC accuracy and stable CPU operation. |
| GND, GNDA, GNDC | Ground returns | Dedicated analog/digital/core ground pins reduce coupling and improve EMI immunity in mixed-signal designs. |
| USB0VBUS, USB0ID, USB0DP, USB0DM | USB 2.0 OTG interface | Full-speed USB transceiver with internal PHY - eliminates need for external USB PHY or level shifters. |
| CAN0RX, CAN0TX, CAN1RX, CAN1TX | CAN 2.0A/B physical layer I/O | Dual independent CAN controllers with message RAM and filtering - supports J1939 and CANopen stacks without external CAN controllers. |
| SSI0CLK, SSI0FSS, SSI0RX, SSI0TX | Synchronous Serial Interface | Hardware SPI master/slave with programmable bit rate and frame format - interfaces directly to digital isolators or flash memory. |
| ADC0, ADC1–ADC11 | Analog input channels | 12 single-ended or 6 differential ADC inputs mapped across GPIO pins - supports flexible sensor routing without board redesign. |
Key Features
| Feature | Design Value |
|---|---|
| Hibernation Module | Integrated RTC, battery-backed 2 KB RAM, and VDD3ON mode - maintains real-time clock and critical variables during 2 µA shutdown. |
| USB 2.0 OTG Controller | On-chip PHY and USB stack support - enables direct connection to PCs, USB flash drives, or HID peripherals without external ICs. |
| Dual CAN Controllers | Independent message RAM, filtering, and FIFOs - allows concurrent CAN FD-ready networks (CAN 2.0B) for diagnostics and control buses. |
| GPIO Remapping | Peripheral function assignment via AFSEL registers - permits layout-optimized pin allocation without changing hardware design. |
| TivaWare™ Software Support | Production-ready driver library, USB stack, CAN stack, and FreeRTOS port - reduces firmware development time by >40% vs bare-metal. |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop BLDC motor drive with current sensing, position feedback, and fieldbus communication. IC Role / Device Role / Timing Role: Real-time controller executing FOC algorithm, managing PWM generation, ADC sampling, and CAN bus reporting. Use Value: Integrated 12-bit ADC with hardware averaging and 80 MHz M4F core deliver <5 µs current-loop latency - meets IEC 61800-3 response requirements. |
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and air quality with wireless upload. IC Role / Device Role / Timing Role: System-on-chip managing sensor acquisition, low-power scheduling, and USB/UART data export. Use Value: Hibernate mode at 2 µA + RTC alarm wake-up enables 2+ years of operation on CR2032 - eliminates battery replacement in inaccessible deployments. |
| Embedded HMI | Automotive Diagnostic Tool |
Use Scenario: Touch-enabled display panel with local logic, button handling, and USB-CDC interface to host PC. IC Role / Device Role / Timing Role: GUI controller running graphics primitives, managing capacitive touch scan, and emulating virtual COM port. Use Value: On-chip USB 2.0 OTG and 32 KB SRAM allow full CDC ACM stack + touch buffer without external RAM - reduces BOM cost by $0.35. |
Use Scenario: Handheld OBD-II scanner reading vehicle DTCs, live PID data, and performing ECU reprogramming. IC Role / Device Role / Timing Role: Dual-CAN gateway bridging high-speed (500 kbps) and low-speed (125 kbps) automotive networks. Use Value: Two independent CAN controllers with message RAM and filtering support simultaneous ISO 15765-2 and UDS protocols - avoids arbitration conflicts in multi-ECU diagnostics. |
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 and extra 32 KB SRAM; no hibernation RAM reduction. | Targeted at networked edge devices requiring Ethernet connectivity - not optimized for ultra-low-power battery use. | Select TM4C123GH6PM only when 10/100 Ethernet is required; TM4C1231E6PMIR saves cost and power where Ethernet is unused. |
| STM32F407VGT6 | Same Cortex-M4F core, but lacks integrated USB PHY, hibernation module, and dual CAN; requires external USB transceiver and RTC backup circuitry. | Better suited for cost-sensitive applications with existing USB PHY infrastructure and no battery-backup requirement. | Choose STM32F407VGT6 if leveraging ST's ecosystem and external USB components already exist; TM4C1231E6PMIR reduces component count by 3–5 parts. |
Compared with TM4C123GH6PM and STM32F407VGT6, the TM4C1231E6PMIR uniquely balances dual-CAN, USB OTG with integrated PHY, and sub-µA hibernation - making it optimal for compact, battery-aware industrial gateways where BOM count and power budget are constrained.
Availability
TM4C1231E6PMIR is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, embedded HMI, and automotive diagnostic tools requiring stable component supply and long-term production continuity.
Supply support for TM4C1231E6PMIR 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 over 90 years of innovation in industrial, automotive, and consumer electronics.
The TM4C1231E6PMIR belongs to TI's Tiva™ C Series microcontroller family, engineered for real-time control, low-power operation, and seamless integration of USB, CAN, and analog peripherals in resource-constrained embedded systems.
FAQ
What is the maximum operating frequency of the TM4C1231E6PMIR?
The TM4C1231E6PMIR operates at a maximum system clock frequency of 80 MHz, derived from its internal PLL with support for multiple clock sources including precision internal oscillator (PIOSC), external crystal (up to 25 MHz), or external clock input. This frequency enables real-time execution of control algorithms and peripheral handling without external timing components.
Does the TM4C1231E6PMIR support USB device, host, and OTG modes simultaneously?
Yes, the TM4C1231E6PMIR integrates a full-featured USB 2.0 OTG controller with on-chip PHY that supports device, host, and OTG modes in a single silicon implementation. Mode switching is controlled via software configuration of the USBCTL register, and the USB stack in TivaWare™ supports all three roles out-of-the-box.
How much hibernation RAM does the TM4C1231E6PMIR provide, and what is retained during hibernate mode?
The TM4C1231E6PMIR provides 2 KB of battery-backed hibernation RAM that remains powered and intact during hibernate mode (typical current draw 2 µA). The hibernation module also retains the 32-bit RTC counter, calibration values, and wake-up configuration - allowing precise timekeeping and state preservation without external components.
Can the TM4C1231E6PMIR's ADC perform simultaneous sampling across multiple channels?
Yes, the TM4C1231E6PMIR's 12-bit ADC supports hardware-triggered sequential sampling across up to 12 channels using four independent sample sequencers. While true simultaneous sampling across all channels is not supported, sequencer 3 can be configured for burst-mode sampling with minimal inter-channel delay (<100 ns), suitable for three-phase current measurement.
Is the TM4C1231E6PMIR pin-compatible with other Tiva C Series microcontrollers in the same package?
No, the TM4C1231E6PMIR is not fully pin-compatible with other Tiva C Series devices in 64-pin LQFP - although many signals share common pin locations, differences in peripheral mapping (e.g., USB ID pin placement, CAN1 signal routing) require board-level validation. Always consult the specific device's pin diagram and datasheet before substitution.
TM4C1231E6PMIR 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:
TM4C1231E6PMIR FAQ
1.How can I place an order for TM4C1231E6PMIR through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1231E6PMIR 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 TM4C1231E6PMIR reliable?
The price and inventory of TM4C1231E6PMIR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1231E6PMIR is usually 5 days.
3.What payment methods are accepted for TM4C1231E6PMIR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1231E6PMIR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1231E6PMIR?
TM4C1231E6PMIR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1231E6PMIR 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 TM4C1231E6PMIR?
For technical support, including TM4C1231E6PMIR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1231E6PMIR requirements.
6.How does Aetrix verify that TM4C1231E6PMIR is sourced from the original manufacturer or authorized distributors?
All TM4C1231E6PMIR 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 TM4C1231E6PMIR meets industry standards.
7.What is the process for return or replacement of TM4C1231E6PMIR?
All TM4C1231E6PMIR units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1231E6PMIR, 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 TM4C1231E6PMIR part is unused and in its original packaging.
Return procedure for TM4C1231E6PMIR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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