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Texas Instruments TM4C1237D5PMI
- Part No.:
- TM4C1237D5PMI
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
TM4C1237D5PMI.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:187
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Product details
Overview
TM4C1237D5PMI 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/host/OTG controller, and 12-bit 1-MSPS ADC - deployed in industrial motor control, sensor fusion gateways, and USB-connected embedded HMI systems.
For engineers reviewing the TM4C1237D5PMI datasheet, TM4C1237D5PMI pinout, TM4C1237D5PMI application, or TM4C1237D5PMI equivalent, key selection criteria include USB OTG capability, hibernation module with RTC and battery-backed memory, deterministic FPU performance for real-time control loops, and dual-CAN support with programmable bit timing.
Technical Context
The TM4C1237D5PMI 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 80 interrupt lines, and a configurable MPU for memory protection in safety-critical firmware.
System-level integration includes a hibernation module with dedicated VBAT supply, 256-byte battery-backed RAM, and calendar-mode RTC; plus μDMA with 32-channel arbitration supporting peripheral-to-memory transfers without CPU intervention - enabling low-latency sensor acquisition and USB packet handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 80 MHz - delivers deterministic 1.25 DMIPS/MHz with hardware FPU for real-time math-intensive tasks. |
| Flash Memory | 256 KB - sufficient for dual-bank firmware updates and bootloader + application separation. |
| SRAM | 32 KB - supports real-time stack usage, DMA buffers, and sensor data aggregation without external RAM. |
| ADC | 12-bit, 1-MSPS, 12-channel - enables simultaneous sampling of motor phase currents and temperature sensors. |
| USB Interface | USB 2.0 full-speed device/host/OTG - allows direct connection to PC hosts, USB peripherals, or cable-free firmware updates via USB CDC ACM. |
| CAN Interfaces | Two CAN 2.0A/B controllers - supports redundant fieldbus communication or multi-node diagnostics in automotive-grade subsystems. |
| Hibernation Module | RTC + 256-byte battery-backed RAM + VBAT monitoring - maintains timekeeping and critical state during main power loss. |
Pinout & Package
TM4C1237D5PMI is housed in a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad, rated for –40°C to +105°C industrial operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Dedicated analog (VDDA), digital core (VDDC), and I/O (VDD) rails enable noise-isolated ADC operation and stable logic switching. |
| USB0VBUS, USB0ID | USB OTG detection | Enables automatic role negotiation (host/device) based on VBUS presence and ID pin state - no external level-shifter required. |
| HIB, RTCCLK, VBAT | Hibernation interface | Direct connection to backup battery; RTCCLK accepts external 32.768 kHz crystal or internal oscillator for timekeeping during sleep. |
| CAN0RX/CAN0TX, CAN1RX/CAN1TX | CAN transceiver I/O | CMOS-level signals compatible with ISO 11898-compliant transceivers - supports up to 1 Mbps bit rate with programmable timing registers. |
| PD0–PD7, PE0–PE5, PF0–PF4 | GPIO with alternate functions | Configurable as UART, I²C, SPI, PWM, or ADC inputs - PF0–PF4 support NMI, reset, and user-wake inputs with Schmitt-triggered inputs. |
Key Features
| Feature | Design Value |
|---|---|
| Floating-Point Unit (FPU) | Hardware-accelerated IEEE 754 single-precision arithmetic - reduces PID loop execution time by >6× vs software emulation. |
| μDMA Controller | 32-channel, scatter-gather capable - offloads ADC buffer filling and USB endpoint transfers, freeing CPU for control algorithms. |
| Hibernation Module | Sub-µA wake-on-RTC-alarm or external GPIO event - extends battery life in portable sensor nodes beyond 1 year on coin cell. |
| Integrated USB PHY | On-die full-speed transceiver - eliminates external USB PHY IC and associated passive components, reducing BOM cost and PCB area. |
| ROM Bootloader | Pre-programmed UART/USB/I²C firmware update interface - enables field reprogramming without JTAG debugger or external programmer. |
Applications
| Industrial Motor Control | Smart Sensor Gateway |
|---|---|
Use Scenario: Closed-loop control of BLDC motors using six-step commutation and current feedback. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, PWM generation with dead-time insertion, and ADC sampling synchronized to PWM edges. Use Value: Deterministic 80 MHz Cortex-M4F + FPU ensures sub-1 µs loop latency; dual CAN interfaces enable motor drive telemetry and PLC coordination. | Use Scenario: Aggregation and preprocessing of temperature, humidity, and vibration data from multiple MEMS sensors. IC Role / Device Role / Timing Role: Sensor interface hub with I²C/SPI masters, 12-bit ADC oversampling, and USB CDC virtual COM port for edge analytics upload. Use Value: On-chip μDMA moves sensor data directly into USB buffers; hibernation mode preserves last reading during brownout events. |
| USB Human-Machine Interface | Automotive Diagnostic Tool |
Use Scenario: Touch-button panel with LED feedback and USB HID report transmission to host PC. IC Role / Device Role / Timing Role: USB HID device controller with GPIO matrix scanning, PWM dimming, and debounced input capture. Use Value: Integrated USB PHY and ROM bootloader allow plug-and-play deployment; 32 KB SRAM accommodates HID descriptor tables and report buffers. | Use Scenario: Handheld OBD-II scanner interfacing with vehicle ECUs via CAN and K-Line protocols. IC Role / Device Role / Timing Role: Dual-CAN controller with bit-timing calibration, UART-based K-Line physical layer, and USB mass storage for log export. Use Value: Independent CAN0/CAN1 modules support simultaneous UDS diagnostic session and live CAN bus monitoring; VBAT-supplied RTC timestamps logs accurately. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TM4C1294NCPDT | ARM Cortex-M4F @ 120 MHz, 1 MB flash, integrated Ethernet MAC + PHY, no hibernation module | Better suited for networked gateway applications requiring TCP/IP stack; lacks battery-backed RTC and VBAT support | Select when Ethernet connectivity outweighs low-power hibernation needs |
| STM32F407VGT6 | ARM Cortex-M4F @ 168 MHz, 1 MB flash, 192 KB SRAM, no native USB OTG or hibernation module | Higher clock speed and memory but requires external USB PHY and external RTC/battery circuitry | Choose when maximum processing throughput is prioritized over integrated power management |
Compared with TM4C1237D5PMI, TM4C1294NCPDT offers higher bandwidth for network stacks but sacrifices hibernation capability; STM32F407VGT6 delivers greater raw compute density but increases BOM count and layout complexity due to missing integrated USB and RTC battery support.
Availability
TM4C1237D5PMI is available at Aetrix Electronics and suitable for industrial motor control, smart sensor gateways, and USB human-machine interface designs requiring stable component supply across extended product lifecycles.
Supply support for TM4C1237D5PMI 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 company headquartered in Dallas, Texas, delivering analog, embedded processing, and wireless technologies since 1930.
The Tiva C Series - including TM4C1237D5PMI - was designed specifically for cost-sensitive, power-aware industrial and consumer embedded applications requiring USB, CAN, and analog integration without external support chips.
FAQ
What is the operating temperature range for TM4C1237D5PMI?
The TM4C1237D5PMI is specified for industrial operation from –40°C to +105°C ambient temperature. This rating applies to the full 64-pin LQFP package and all integrated peripherals including the ADC, USB PHY, and hibernation module - ensuring reliable function in harsh environments such as factory automation cabinets or outdoor sensor enclosures.
Does TM4C1237D5PMI support USB device, host, and OTG modes simultaneously?
Yes, the TM4C1237D5PMI integrates a single USB 2.0 full-speed controller that supports device, host, and OTG roles through software configuration. The USB0VBUS and USB0ID pins enable automatic role detection, and the on-chip PHY eliminates external components - allowing TM4C1237D5PMI to act as a USB CDC device when connected to a PC or as a USB host for HID keyboards without hardware changes.
How much battery-backed memory does TM4C1237D5PMI provide in hibernation mode?
The TM4C1237D5PMI provides 256 bytes of battery-backed RAM within its hibernation module, accessible only when VBAT is supplied and the device is in hibernate state. This memory retains critical system state - such as RTC alarm settings, last sensor reading, or fault counters - while consuming less than 1.5 µA, enabling multi-year operation on a CR2032 coin cell.
Can TM4C1237D5PMI execute code directly from flash while using the FPU?
Yes, the TM4C1237D5PMI supports zero-wait-state execution from its 256 KB flash memory at 80 MHz, and the ARM Cortex-M4F FPU operates concurrently with instruction fetches. This allows real-time control algorithms - such as field-oriented motor control - to run entirely from flash without RAM shadowing, preserving SRAM for dynamic data structures and DMA buffers.
What debug interfaces are supported by TM4C1237D5PMI?
The TM4C1237D5PMI supports both JTAG and ARM Serial Wire Debug (SWD) interfaces via dedicated pins (TCK, TMS, TDI, TDO, nTRST, SWDIO, SWCLK). SWD is recommended for production programming due to its 2-pin footprint and compatibility with TI's XDS100v3 and ICDI debuggers - enabling full breakpoint, register, and memory access during development and field firmware updates.
TM4C1237D5PMI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-LQFP
- Series:
- Tiva™ C
- Packaging:
- Bulk
- 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, USB OTG
- 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:
TM4C1237D5PMI FAQ
1.How can I place an order for TM4C1237D5PMI through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1237D5PMI 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 TM4C1237D5PMI reliable?
The price and inventory of TM4C1237D5PMI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1237D5PMI is usually 5 days.
3.What payment methods are accepted for TM4C1237D5PMI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1237D5PMI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1237D5PMI?
TM4C1237D5PMI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1237D5PMI 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 TM4C1237D5PMI?
For technical support, including TM4C1237D5PMI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1237D5PMI requirements.
6.How does Aetrix verify that TM4C1237D5PMI is sourced from the original manufacturer or authorized distributors?
All TM4C1237D5PMI 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 TM4C1237D5PMI meets industry standards.
7.What is the process for return or replacement of TM4C1237D5PMI?
All TM4C1237D5PMI units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1237D5PMI, 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 TM4C1237D5PMI part is unused and in its original packaging.
Return procedure for TM4C1237D5PMI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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