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Texas Instruments TM4C1237D5PZI
- Part No.:
- TM4C1237D5PZI
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
TM4C1237D5PZI.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TM4C1237D5PZI 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 up to 80 MHz, supports hibernation mode with RTC and battery-backed memory, and targets embedded control in industrial automation, motor control, and sensor gateway applications.
For engineers reviewing the TM4C1237D5PZI datasheet, TM4C1237D5PZI pinout, TM4C1237D5PZI application, or TM4C1237D5PZI equivalent, key selection considerations include its 100-pin LQFP package, -40°C to +105°C industrial temperature grade, integrated USB PHY, FPU-enabled floating-point performance, and TivaWare™ software support for rapid firmware development.
Technical Context
The TM4C1237D5PZI integrates a 32-bit ARM Cortex-M4F core with hardware FPU, supporting single-precision IEEE 754 operations and Thumb-2 instruction set. Its system-level architecture includes a 512 KB ROM bootloader, 256 KB on-chip flash with error correction, and 32 KB SRAM with parity protection.
Peripherals are tightly coupled via the AHB/APB bus matrix: dual 12-bit ADCs with eight sample sequencers, four 32-bit general-purpose timers (with PWM and capture capability), USB 2.0 OTG with integrated PHY, and μDMA controller supporting 32-channel arbitration. Clock management includes PLL-based 80 MHz system clock derived from internal precision oscillator or external crystal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F with hardware FPU - enables real-time signal processing and deterministic floating-point math without software emulation overhead. |
| Max Operating Frequency | 80 MHz - delivers 100+ DMIPS performance suitable for closed-loop motor control and protocol stack execution. |
| Flash Memory | 256 KB with ECC - provides robust code storage with single-bit error correction and double-bit error detection for industrial reliability. |
| SRAM | 32 KB with parity - supports safe data buffering and stack operations with hardware-level integrity checking. |
| ADC Resolution & Speed | 12-bit, up to 1 MSPS - enables high-fidelity sensor acquisition (e.g., current sensing, temperature monitoring) with low latency. |
| USB Interface | USB 2.0 OTG with integrated PHY - eliminates need for external transceiver, reducing BOM count and PCB area in device-class applications. |
| Operating Temperature | -40°C to +105°C - qualified for extended industrial environments including factory floor and outdoor edge nodes. |
| Package | 100-pin LQFP (14 × 14 mm, 0.5 mm pitch) - compatible with standard surface-mount assembly and offers full peripheral pin access for complex I/O routing. |
Pinout & Package
TM4C1237D5PZI is housed in a 100-pin LQFP package (PZ suffix), with exposed thermal pad for enhanced thermal dissipation in continuous operation. Pin functions are defined per TI SPMS357E datasheet Rev E, June 2014.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Dedicated domains for digital logic (VDD), analog circuitry (VDDA), and USB PHY (VDDC) - enable noise isolation and stable ADC/USB operation. |
| GND, GNDA, GNDC | Ground returns | Separate ground planes minimize coupling between digital switching noise, analog reference stability, and USB signal integrity. |
| USB0VBUS, USB0ID | USB OTG detection | Supports host/peripheral role negotiation and VBUS presence sensing without external comparators or GPIO polling. |
| SSI0CLK, SSI0FSS, SSI0RX, SSI0TX | SPI interface signals | Four dedicated SSI modules allow concurrent communication with multiple sensors, displays, or memory devices using DMA-driven transfers. |
| U0RX, U0TX, U1RX, U1TX | UART transmit/receive | Dual UARTs with FIFO and modem control pins support simultaneous debug console and fieldbus protocol (e.g., Modbus RTU) handling. |
| ADC0, ADC1 | Analog input channels | 16 total ADC input pins mapped across two 12-bit converters - support differential sampling and hardware averaging for noise rejection in noisy environments. |
Key Features
| Feature | Design Value |
|---|---|
| Hibernation module with RTC and battery-backed memory | Enables ultra-low-power wake-up from <1 µA sleep current while retaining timekeeping and 2 KB of RAM state - ideal for battery-powered remote sensors. |
| Integrated USB 2.0 OTG PHY | Eliminates external transceiver IC and associated passive components, reducing bill-of-materials cost and layout complexity for USB-connected devices. |
| μDMA controller with 32-channel arbitration | Offloads CPU from peripheral data movement (e.g., ADC-to-memory, UART-to-buffer), freeing cycles for control algorithms and real-time response. |
| TivaWare™ Peripheral Driver Library | Provides production-ready, tested C APIs for all peripherals - accelerates firmware development and reduces validation effort for industrial customers. |
| ROM-based bootloader with In-Application Programming (IAP) | Allows field firmware updates over UART, USB, or CAN without external programmer - supports secure OTA update workflows in deployed systems. |
Applications
| Industrial Motor Control | Smart Sensor Gateway |
|---|---|
Use Scenario: Closed-loop control of BLDC/PMSM motors using space-vector PWM and real-time current feedback. IC Role / Device Role / Timing Role: Real-time MCU executing FOC algorithm, generating PWM outputs, sampling ADCs at 10–20 kHz, and managing commutation timing. Use Value: Hardware FPU and 80 MHz clock deliver sub-microsecond interrupt latency and deterministic loop execution; integrated ADC and timers reduce external component count. |
Use Scenario: Aggregating data from multiple analog/digital sensors (temperature, humidity, pressure) and transmitting via USB or UART to host PC or cloud gateway. IC Role / Device Role / Timing Role: Sensor interface hub with configurable ADC sampling, UART/USB bridging, and local preprocessing (filtering, scaling, timestamping). Use Value: Dual UARTs + USB OTG enable flexible connectivity options; hibernation mode extends battery life in portable deployments. |
| Programmable Logic Controller (PLC) I/O Module | USB Human Interface Device (HID) |
Use Scenario: Modular I/O expansion unit with digital input/output, analog input, and isolated communication interfaces for factory automation. IC Role / Device Role / Timing Role: Deterministic real-time controller managing discrete I/O scanning, analog conditioning, and EtherCAT/Modbus slave protocol stack. Use Value: 100-pin LQFP provides ample GPIO and peripheral mapping; industrial temp grade ensures operation in cabinet-mounted enclosures. |
Use Scenario: Embedded HID device such as programmable industrial keypad, diagnostic tool, or configuration dongle with USB plug-and-play interface. IC Role / Device Role / Timing Role: USB device controller implementing HID class descriptors, handling button press reporting and LED status feedback. Use Value: Integrated USB PHY and ROM bootloader simplify certification and eliminate external USB IC; TivaWare HID examples accelerate compliance testing. |
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, 256 KB SRAM, integrated Ethernet MAC + PHY, no hibernation module | Better suited for networked HMI or gateway applications requiring Ethernet; lacks RTC/battery-backed memory for ultra-low-power wake-up | Select when Ethernet connectivity and higher memory are prioritized over deep-sleep power efficiency. |
| STM32F407VGT6 | ARM Cortex-M4F @ 168 MHz, 1 MB flash, 192 KB SRAM, no integrated USB PHY, requires external transceiver | Higher compute throughput but increased BOM and layout complexity for USB; different peripheral register map and ecosystem | Choose if leveraging STM32CubeMX toolchain and existing ST ecosystem; verify USB signal integrity with external PHY. |
Compared with TM4C1237D5PZI, TM4C1294NCPDT trades hibernation capability for Ethernet integration and larger memory, while STM32F407VGT6 offers higher clock speed but demands external USB components and divergent firmware tooling - making TM4C1237D5PZI optimal for cost-sensitive, USB-connected industrial controllers needing robust low-power operation.
Availability
TM4C1237D5PZI is available at Aetrix Electronics and suitable for industrial motor control, smart sensor gateways, and programmable logic controller (PLC) I/O modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TM4C1237D5PZI 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 delivering high-reliability components for industrial, automotive, and aerospace markets.
The TM4C1237D5PZI belongs to TI's Tiva C Series microcontroller family, designed specifically for cost-effective, high-performance embedded control in industrial automation, building systems, and IoT edge nodes where USB connectivity and low-power operation are critical.
FAQ
What is the maximum operating frequency of the TM4C1237D5PZI?
The TM4C1237D5PZI operates at a maximum system clock frequency of 80 MHz, achieved via its integrated PLL that accepts input from either the internal 16 MHz precision oscillator or an external crystal. This frequency enables deterministic real-time execution of control loops and protocol stacks. The TM4C1237D5PZI maintains full peripheral functionality-including USB, ADC, and timers-at this speed, as verified in TI's SPMS357E production datasheet.
Does the TM4C1237D5PZI include an integrated USB physical layer (PHY)?
Yes, the TM4C1237D5PZI integrates a full-speed USB 2.0 OTG PHY, eliminating the need for an external transceiver. This reduces component count, PCB area, and signal integrity challenges in USB-connected designs. The TM4C1237D5PZI supports both device and host roles, with dedicated VBUS sensing and ID pin handling directly implemented in silicon per TI's official documentation.
What memory resources are available on the TM4C1237D5PZI?
The TM4C1237D5PZI includes 256 KB of on-chip flash memory with ECC protection, 32 KB of SRAM with parity checking, 512 KB of ROM containing the bootloader and driver library, and 2 KB of battery-backed hibernation memory. These resources are fixed and verified in TI's production datasheet SPMS357E, enabling reliable firmware storage, runtime data handling, and low-power state retention without external memory.
Is the TM4C1237D5PZI qualified for industrial temperature range?
Yes, the TM4C1237D5PZI is rated for operation from -40°C to +105°C ambient temperature, meeting industrial-grade requirements. This qualification is explicitly stated in Section 1.3.7 ("Packaging and Temperature") of the TI SPMS357E datasheet and applies to the PZI variant. The device undergoes screening and characterization across this full range, ensuring reliability in factory automation and outdoor equipment.
What development tools and software support are available for the TM4C1237D5PZI?
Texas Instruments provides the TivaWare™ Peripheral Driver Library, Code Composer Studio™ IDE, and TI's official evaluation kits (e.g., TM4C123G LaunchPad). The TM4C1237D5PZI is fully supported by these tools, with example projects covering USB HID, ADC sampling, PWM generation, and hibernation mode. All drivers and examples are validated against the TM4C1237D5PZI silicon revision and documented in TI's official release notes.
TM4C1237D5PZI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-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:
- 69
- 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 22x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
TM4C1237D5PZI FAQ
1.How can I place an order for TM4C1237D5PZI through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1237D5PZI 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 TM4C1237D5PZI reliable?
The price and inventory of TM4C1237D5PZI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1237D5PZI is usually 5 days.
3.What payment methods are accepted for TM4C1237D5PZI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1237D5PZI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1237D5PZI?
TM4C1237D5PZI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1237D5PZI 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 TM4C1237D5PZI?
For technical support, including TM4C1237D5PZI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1237D5PZI requirements.
6.How does Aetrix verify that TM4C1237D5PZI is sourced from the original manufacturer or authorized distributors?
All TM4C1237D5PZI 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 TM4C1237D5PZI meets industry standards.
7.What is the process for return or replacement of TM4C1237D5PZI?
All TM4C1237D5PZI units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1237D5PZI, 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 TM4C1237D5PZI part is unused and in its original packaging.
Return procedure for TM4C1237D5PZI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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