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Texas Instruments TM4C1237E6PMI
- Part No.:
- TM4C1237E6PMI
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
TM4C1237E6PMI.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,449
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Product details
Overview
TM4C1237E6PMI from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 256 KB Flash, 32 KB SRAM, and integrated analog peripherals including 12-bit ADC (up to 1MSPS), two UARTs, two I²C, four SPI, and USB 2.0 OTG. It operates at 80 MHz, supports -40°C to +105°C industrial temperature range, and is used in motor control, industrial sensing, and USB-connected embedded systems.
For engineers reviewing the TM4C1237E6PMI datasheet, TM4C1237E6PMI pinout, TM4C1237E6PMI application, or TM4C1237E6PMI equivalent, key selection criteria include its 80-MHz Cortex-M4F core with FPU, 12-bit ADC performance, USB OTG capability, and QFP-128 package compatibility with TI's TivaWare™ software stack.
Technical Context
The TM4C1237E6PMI integrates a single-core ARM Cortex-M4F processor with hardware floating-point unit and memory protection unit (MPU). It features a 32-bit bus interface, 80 MHz system clock derived from internal PLL or external crystal, and supports Thumb-2 instruction set for code density and performance.
Its peripheral subsystem includes dual 12-bit ADCs with up to 16-channel input multiplexing, configurable μDMA controller supporting 32 channels, and full-speed USB 2.0 OTG with integrated PHY - enabling host/device/OTG operation without external transceivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 80 MHz with hardware FPU and MPU - enables real-time signal processing and deterministic control loops. |
| Memory | 256 KB Flash (programmable in 1-KB sectors) + 32 KB SRAM - sufficient for complex firmware with USB stack and sensor fusion algorithms. |
| ADC | 12-bit SAR ADC, 1 MSPS max sample rate, 16-channel input mux - supports high-resolution analog monitoring in multi-sensor systems. |
| USB Interface | USB 2.0 Full-Speed OTG with integrated PHY - eliminates need for external transceiver and simplifies USB device/host implementation. |
| Temperature Range | -40°C to +105°C - qualified for industrial and extended-temperature embedded applications without derating. |
| Package | 128-pin LQFP (14 mm × 14 mm, 0.4 mm pitch) - compatible with standard PCB assembly processes and TI's EK-TM4C123GXL evaluation board layout. |
| Peripherals | 2× UART, 2× I²C, 4× SPI, 2× QEI, 8× PWM outputs, 2× watchdog timers - supports motor drive, serial communication, and timing-critical feedback control. |
Pinout & Package
TM4C1237E6PMI is housed in a 128-pin LQFP (Pb-free, RoHS-compliant) with 0.4 mm pitch and exposed thermal pad. Pinout follows TI's standardized Tiva C Series pin mapping for GPIO, peripheral function multiplexing, and power/ground distribution.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Separate domains for digital logic (VDD), analog (VDDA), and USB PHY (VDDC) - enable noise isolation and independent power sequencing. |
| GND, GNDA, GNDC | Ground returns | Dedicated analog and USB ground planes reduce coupling and improve ADC/USB signal integrity. |
| USB0VBUS, USB0ID | USB OTG detection | Supports automatic role switching between host and device based on VBUS presence and ID pin state. |
| PF0–PF4 | GPIO / NMI / SW2 | Multi-function pins usable as general-purpose I/O or dedicated debug/reset functions - critical for boot configuration and recovery. |
| PD0–PD7 | UART0 / I²C1 / SSI1 | Shared peripheral signals allow flexible interface routing - e.g., UART0 can be mapped to PD0/PD1 or PA0/PA1 depending on software configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Floating-Point Unit (FPU) | Hardware-accelerated single-precision math enables efficient FFT, PID tuning, and sensor calibration without software emulation overhead. |
| Hibernation Module | Retains RTC, battery-backed RAM, and wake-on-external-interrupt capability while drawing <1.5 µA - extends battery life in always-on monitoring nodes. |
| μDMA Controller | 32-channel configurable DMA offloads CPU during ADC sampling, UART transfers, and USB packet handling - improves real-time responsiveness. |
| Programmable GPIO | Each pin supports slew-rate control, pull-up/down, open-drain, and 5-V tolerant inputs - simplifies interfacing with legacy sensors and logic families. |
| TivaWare™ Software | TI-provided driver library, USB stack, and FreeRTOS port - reduces firmware development time and ensures peripheral register abstraction. |
Applications
| Industrial Motor Control | USB-Capable Data Logger |
|---|---|
|
Use Scenario: Closed-loop BLDC motor control with current sensing, position feedback, and real-time torque adjustment. IC Role / Device Role / Timing Role: Main controller executing FOC algorithm, managing PWM generation, ADC sampling, and fault monitoring. Use Value: 80-MHz Cortex-M4F core with FPU delivers sub-microsecond loop timing; integrated QEI and PWM modules eliminate external timing ICs. |
Use Scenario: Field-deployed environmental sensor node logging temperature, humidity, and pressure to SD card via SPI, with USB mass storage export. IC Role / Device Role / Timing Role: System-on-chip host managing sensor interfaces, file system, USB enumeration, and power management. Use Value: Integrated USB 2.0 OTG PHY and μDMA enable seamless data transfer without external transceivers or DMA controllers. |
| Smart Building Sensor Hub | Programmable Industrial I/O Module |
|
Use Scenario: Multi-protocol gateway aggregating Modbus RTU, I²C sensors, and BLE (via external module), reporting to cloud via Ethernet or Wi-Fi add-on. IC Role / Device Role / Timing Role: Central protocol translator and data concentrator with deterministic scheduling of serial and analog tasks. Use Value: Dual UARTs, multiple I²C/SPI ports, and 12-bit ADC support concurrent sensor polling and serial protocol bridging. |
Use Scenario: DIN-rail mounted PLC I/O expansion module with configurable digital input/output, analog input, and isolated RS-485 communication. IC Role / Device Role / Timing Role: Real-time I/O manager handling debounce, scaling, diagnostics, and fieldbus messaging. Use Value: Hibernation mode maintains configuration and RTC across power cycles; GPIO programmability supports both sinking/sourcing output types. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TM4C123GH6PM | Same core, 256 KB Flash, but rated for -40°C to +85°C and lacks USB OTG PHY - requires external transceiver for USB functionality. | Suitable for cost-sensitive non-USB applications where extended temperature is not required. | Select TM4C123GH6PM only if USB OTG is unnecessary and ambient operating temperature stays ≤85°C. |
| STM32F407VGT6 | ARM Cortex-M4F @ 168 MHz, 1 MB Flash, no integrated USB PHY - uses external ULPI or full-speed PHY; different peripheral register map and interrupt model. | Better suited for high-throughput applications requiring larger code space or higher clock speed, but demands more PCB area and firmware adaptation. | Choose STM32F407VGT6 when >256 KB Flash or >80 MHz CPU throughput is mandatory, and USB PHY integration is secondary to raw performance. |
Compared with TM4C123GH6PM and STM32F407VGT6, the TM4C1237E6PMI offers unique value in USB OTG integration with industrial temperature support and TI's mature TivaWare ecosystem - reducing BOM count and accelerating development for USB-enabled edge devices.
Availability
TM4C1237E6PMI is available at Aetrix Electronics and suitable for industrial motor control, USB-connected data loggers, and smart building sensor hubs requiring stable component supply, long-term lifecycle assurance, and consistent industrial-grade qualification.
Supply support for TM4C1237E6PMI 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 experience in industrial and automotive microcontrollers.
The TM4C1237E6PMI belongs to TI's Tiva™ C Series - designed specifically for cost-effective, high-integration embedded applications demanding USB connectivity, analog sensing, and real-time control in harsh environments.
FAQ
What is the maximum operating frequency of the TM4C1237E6PMI?
The TM4C1237E6PMI operates at a maximum system clock frequency of 80 MHz, achieved using its internal PLL with either an external crystal (4–25 MHz) or internal oscillator. This frequency applies across the full -40°C to +105°C temperature range and is validated per TI's production test specifications in the DS-TM4C1237E6PM-15842.2741 datasheet.
Does the TM4C1237E6PMI include an integrated USB physical layer (PHY)?
Yes, the TM4C1237E6PMI integrates a full-speed USB 2.0 OTG PHY compliant with USB specification revision 2.0. It supports host, device, and OTG roles without requiring external transceivers, and includes dedicated VDDC/GNDC pins for clean USB power domain separation.
What analog-to-digital converter (ADC) capabilities does the TM4C1237E6PMI provide?
The TM4C1237E6PMI features two independent 12-bit SAR ADC modules, each supporting up to 1 MSPS conversion rate and 16-channel analog input multiplexing. It includes hardware averaging, digital comparators, and temperature sensor input - all accessible via the μDMA controller for zero-CPU-overhead sampling.
Is the TM4C1237E6PMI pin-compatible with other Tiva C Series microcontrollers?
The TM4C1237E6PMI uses a 128-pin LQFP package with pinout aligned to the TM4C123x family, including TM4C123GH6PM and TM4C123BE6PM. However, differences in USB PHY pin assignment and hibernation module signals mean that direct PCB reuse requires verification of VDDC/GNDC routing and HIB pin usage per the specific variant's datasheet.
What development tools and software support are available for the TM4C1237E6PMI?
Texas Instruments provides TivaWare™ Peripheral Driver Library, USB stack, and FreeRTOS port for the TM4C1237E6PMI. It is supported by Code Composer Studio (CCS), IAR Embedded Workbench, and GCC-based toolchains. Evaluation is enabled via the EK-TM4C123GXL LaunchPad, which shares identical pinout and peripheral mapping for rapid prototyping.
TM4C1237E6PMI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-LQFP
- Series:
- Tiva™ C
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- 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, USB OTG
- 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 12x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
TM4C1237E6PMI FAQ
1.How can I place an order for TM4C1237E6PMI through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1237E6PMI 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 TM4C1237E6PMI reliable?
The price and inventory of TM4C1237E6PMI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1237E6PMI is usually 5 days.
3.What payment methods are accepted for TM4C1237E6PMI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1237E6PMI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1237E6PMI?
TM4C1237E6PMI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1237E6PMI 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 TM4C1237E6PMI?
For technical support, including TM4C1237E6PMI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1237E6PMI requirements.
6.How does Aetrix verify that TM4C1237E6PMI is sourced from the original manufacturer or authorized distributors?
All TM4C1237E6PMI 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 TM4C1237E6PMI meets industry standards.
7.What is the process for return or replacement of TM4C1237E6PMI?
All TM4C1237E6PMI units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1237E6PMI, 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 TM4C1237E6PMI part is unused and in its original packaging.
Return procedure for TM4C1237E6PMI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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