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Texas Instruments TM4C1237D5PMI7R
- Part No.:
- TM4C1237D5PMI7R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
TM4C1237D5PMI7R.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,027
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Product details
Overview
TM4C1237D5PMI7R from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 256 KB flash, 32 KB SRAM, integrated USB 2.0 OTG, 12-bit ADC (1MSPS), and 8 PWM outputs. It operates at up to 80 MHz and supports -40°C to +85°C industrial temperature range. It serves as a main system controller in motor control, industrial sensing, and USB-connected embedded devices.
For engineers reviewing the TM4C1237D5PMI7R datasheet, TM4C1237D5PMI7R pinout, TM4C1237D5PMI7R application, or TM4C1237D5PMI7R equivalent, key selection criteria include its USB OTG capability, hibernation module with RTC and battery-backed memory, deterministic real-time performance via NVIC and SysTick, and integrated analog front-end for sensor interfacing.
Technical Context
The TM4C1237D5PMI7R integrates a single-core ARM Cortex-M4F processor with hardware floating-point unit (FPU) and DSP instructions, enabling efficient signal processing and control loop execution. Its memory subsystem includes 256 KB on-chip flash with ECC support, 32 KB SRAM, and 2 KB EEPROM for nonvolatile data storage.
Peripherals include four UARTs (one with ISO 7816 and SIR support), two I²C modules, two SPI interfaces, eight PWM generator blocks, a 12-channel 12-bit ADC with hardware averaging and digital comparators, and a dedicated hibernation module with RTC, battery management, and VBAT backup capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 80 MHz with FPU and DSP extensions - enables real-time math-intensive tasks without software emulation. |
| Flash Memory | 256 KB with ECC and 1K erase sectors - supports robust firmware updates and secure code storage. |
| SRAM | 32 KB with parity protection - provides reliable runtime data storage for interrupt-driven applications. |
| ADC | 12-bit, 1 MSPS, 12-channel with hardware averaging and digital comparators - allows high-accuracy sensor sampling with built-in threshold triggering. |
| USB Interface | USB 2.0 OTG with integrated PHY - enables host/device/OTG operation without external transceivers. |
| Hibernation Module | RTC, battery-backed RAM (2 KB), VBAT monitoring, and wake-on-external-pin - delivers sub-1 µA deep-sleep power for battery-powered edge nodes. |
| Operating Temp | -40°C to +85°C - qualified for industrial environments without derating. |
| Package | 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch) - compatible with standard PCB assembly and thermal management. |
Pinout & Package
TM4C1237D5PMI7R is housed in a 64-pin LQFP package (Pb-free, RoHS-compliant), with exposed thermal pad for enhanced heat dissipation in continuous operation. Pin functions are defined per TI SPMS356E datasheet Rev E (June 2014).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Dedicated domains for digital logic, analog circuitry, and internal regulator - enable clean analog measurements and stable core operation. |
| GND, GNDA | Ground references | Separate analog/digital ground planes reduce noise coupling into ADC and PLL paths. |
| USB0VBUS, USB0ID | USB OTG detection | Enables automatic role switching between host and device modes based on VBUS presence and ID pin state. |
| HIB, RTCCLK, VBAT | Hibernation control | Direct interface to external battery and RTC crystal - supports autonomous low-power timekeeping during full system sleep. |
| PD0–PD7, PE0–PE5, etc. | GPIO banks | Configurable 5-V-tolerant I/O with slew-rate control, pull-up/down, and interrupt capability - simplifies interface to sensors, displays, and legacy peripherals. |
| SSI0CLK, SSI0FSS, SSI0RX, SSI0TX | SPI master/slave interface | Hardware-accelerated synchronous serial communication - offloads CPU during flash, sensor, or display data transfers. |
Key Features
| Feature | Design Value |
|---|---|
| Floating-Point Unit (FPU) | Hardware IEEE 754 single-precision arithmetic - eliminates software library overhead in motor control and filtering algorithms. |
| μDMA Controller | 32-channel micro-DMA with scatter-gather support - enables zero-CPU-cycle peripheral-to-memory transfers for ADC, UART, and USB buffers. |
| Hibernation Module | Dedicated low-power domain with RTC, battery-backed RAM, and wake-on-comparator - extends battery life in portable instrumentation by >100× vs. active mode. |
| Analog Subsystem | 12-bit ADC with 12 sample sequencers, hardware averaging, and 8 digital comparators - supports simultaneous multi-sensor monitoring with autonomous event triggering. |
| ROM Bootloader | Pre-programmed ROM with UART/USB/I²C firmware update capability - enables field upgrades without external programmer or debug interface. |
| Peripheral Integration | 8 PWM generators, 4 UARTs (1 with ISO 7816), 2 I²C, 2 SPI, 2 QEI - reduces BOM count and PCB area in motion control and industrial HMI designs. |
Applications
| Industrial Motor Control | USB-Enabled Data Logger |
|---|---|
Use Scenario: Closed-loop BLDC motor drive with current sensing, position feedback, and thermal monitoring. IC Role / Device Role / Timing Role: Real-time control unit executing FOC algorithm, managing PWM timing, ADC sampling, and fault response within <1 µs jitter. Use Value: Integrated 80-MHz M4F core with FPU and μDMA enables deterministic execution of complex control loops while offloading sensor data movement from CPU. | Use Scenario: Battery-powered environmental monitor collecting temperature, humidity, and pressure data, then uploading via USB mass storage or CDC ACM. IC Role / Device Role / Timing Role: System-on-chip host controller managing sensor I²C reads, timestamping via RTC, and USB enumeration/data transfer without external USB controller. Use Value: On-chip USB 2.0 OTG with integrated PHY and hibernation module allows seamless plug-and-play connectivity and weeks-long battery operation between uploads. |
| Smart Sensor Node | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Wireless-capable node with analog sensor inputs, digital I/O, and local decision-making before RF transmission. IC Role / Device Role / Timing Role: Edge intelligence hub performing sensor fusion, threshold detection, and wake-on-event using ADC comparators and GPIO interrupts. Use Value: Hardware digital comparators and hibernation wake sources eliminate polling, reducing average current to <5 µA in standby while maintaining responsiveness. | Use Scenario: DIN-rail mounted I/O expansion module with isolated digital inputs/outputs, analog input conditioning, and Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Protocol-aware peripheral manager handling UART framing, CRC calculation, and precise timing for Modbus slave response windows. Use Value: Four UARTs with programmable FIFOs and modem handshake signals simplify RS-485 half-duplex control and deterministic serial protocol implementation. |
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 64 KB SRAM and no USB OTG PHY - requires external transceiver for USB device/host. | Lacks integrated USB physical layer - unsuitable for direct USB cable connection without added components. | Select when higher RAM is needed and USB connectivity is handled externally or omitted. |
| STM32F407VGT6 | ARM Cortex-M4F @ 168 MHz, 1 MB flash, 192 KB SRAM, USB OTG HS/FS, but no hibernation module or battery-backed RTC. | No native sub-µA hibernation - requires external RTC and power management IC for long-term battery operation. | Select when higher clock speed and memory are critical, and ultra-low-power sleep is managed externally. |
Compared with TM4C1237D5PMI7R, TM4C123GH6PM trades USB integration for more SRAM, while STM32F407VGT6 offers higher performance and memory at the cost of integrated low-power hibernation - making TM4C1237D5PMI7R optimal for USB-connected, battery-sensitive industrial edge nodes.
Availability
TM4C1237D5PMI7R is available at Aetrix Electronics and suitable for industrial motor control, USB-enabled data loggers, smart sensor nodes, and PLC I/O modules requiring stable component supply and long-term manufacturability.
Supply support for TM4C1237D5PMI7R 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 focused on analog, embedded processing, and wireless technologies, serving industrial, automotive, and consumer markets since 1930.
The Tiva C Series - including TM4C1237D5PMI7R - was designed specifically for cost-sensitive, real-time industrial and automation applications requiring integrated analog, USB, and low-power hibernation capabilities.
FAQ
What is the maximum operating frequency of the TM4C1237D5PMI7R?
The TM4C1237D5PMI7R operates at a maximum system clock frequency of 80 MHz, derived from its internal PLL with support for multiple clock sources including external crystals, internal oscillators, and USB SOF synchronization. This frequency is fully supported across all operating voltage and temperature ranges specified in the SPMS356E datasheet, and the ARM Cortex-M4F core executes instructions at this rate with deterministic timing for real-time applications.
Does the TM4C1237D5PMI7R include an integrated USB physical layer?
Yes, the TM4C1237D5PMI7R includes a full-speed USB 2.0 OTG physical layer (PHY) integrated on-die, eliminating the need for external transceivers. It supports device, host, and OTG roles, with dedicated pins (USB0VBUS, USB0ID, USB0DP, USB0DM) and internal termination resistors. This integration is confirmed in Section 1.3.3 and Figure 1-2 of the SPMS356E datasheet.
What low-power features does the TM4C1237D5PMI7R offer for battery-operated systems?
The TM4C1237D5PMI7R features a dedicated hibernation module supporting sub-1 µA deep-sleep current, battery-backed RAM (2 KB), integrated RTC with calendar functionality, VBAT monitoring, and wake-on-external-pin or comparator events. These capabilities are documented in Section 7 of the SPMS356E datasheet and enable multi-week operation on coin-cell batteries in remote sensor applications.
How much on-chip flash and SRAM does the TM4C1237D5PMI7R provide?
The TM4C1237D5PMI7R integrates 256 KB of on-chip flash memory with error-correcting code (ECC) and 32 KB of SRAM with parity protection. Flash is organized in 1-KB sectors for flexible firmware updates, and SRAM supports both general-purpose data storage and stack operations under full CPU load - specifications verified in Section 1.3.2 and Table 1-1 of the SPMS356E datasheet.
Is the TM4C1237D5PMI7R pin-compatible with other Tiva C Series microcontrollers?
No, the TM4C1237D5PMI7R is not pin-compatible with other Tiva C Series variants such as TM4C123GH6PM or TM4C1294NCPDT. While sharing the same 64-pin LQFP footprint, pin assignments for peripherals like USB, hibernation, and analog differ significantly - confirmed by comparing Tables 1-3 and 1-4 in the SPMS356E datasheet. Board-level reuse requires schematic and layout validation.
TM4C1237D5PMI7R 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, 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:
TM4C1237D5PMI7R FAQ
1.How can I place an order for TM4C1237D5PMI7R through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1237D5PMI7R 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 TM4C1237D5PMI7R reliable?
The price and inventory of TM4C1237D5PMI7R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1237D5PMI7R is usually 5 days.
3.What payment methods are accepted for TM4C1237D5PMI7R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1237D5PMI7R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1237D5PMI7R?
TM4C1237D5PMI7R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1237D5PMI7R 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 TM4C1237D5PMI7R?
For technical support, including TM4C1237D5PMI7R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1237D5PMI7R requirements.
6.How does Aetrix verify that TM4C1237D5PMI7R is sourced from the original manufacturer or authorized distributors?
All TM4C1237D5PMI7R 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 TM4C1237D5PMI7R meets industry standards.
7.What is the process for return or replacement of TM4C1237D5PMI7R?
All TM4C1237D5PMI7R units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1237D5PMI7R, 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 TM4C1237D5PMI7R part is unused and in its original packaging.
Return procedure for TM4C1237D5PMI7R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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