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Texas Instruments XM4C129ENCPDTI1
- Part No.:
- XM4C129ENCPDTI1
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 128-TQFP
- Datasheet:
-
XM4C129ENCPDTI1.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 128TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,442
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Product details
Overview
XM4C129ENCPDTI1 from Texas Instruments is a high-performance ARM Cortex-M4F microcontroller with 120 MHz operation, 1 MB Flash, 256 KB SRAM, integrated Ethernet MAC+PHY, USB 2.0 OTG, and hardware crypto accelerators (AES/DES/SHA/MD5). It serves as the main application processor in industrial gateways requiring real-time control, secure connectivity, and deterministic I/O handling.
For engineers reviewing the XM4C129ENCPDTI1 datasheet, XM4C129ENCPDTI1 pinout, XM4C129ENCPDTI1 application, or XM4C129ENCPDTI1 equivalent, key selection criteria include its integrated 10/100 Ethernet PHY, dual USB interfaces (Host/Device/OTG), hibernation module with RTC and tamper detection, and support for TivaWare™ software stack in industrial automation and connected sensor node designs.
Technical Context
The XM4C129ENCPDTI1 implements an ARM Cortex-M4F core with single-precision floating-point unit and memory protection unit (MPU), enabling deterministic real-time execution and secure partitioning of firmware tasks. It integrates a full-speed USB 2.0 OTG controller with internal transceiver and a 10/100 Ethernet MAC with integrated PHY - both compliant with IEEE 802.3u - eliminating external PHY requirements.
Its system-level features include a hibernation module with battery-backed RTC, tamper-detection inputs, and 2 KB of battery-backed SRAM; a μDMA controller supporting 32-channel arbitration; and cryptographic acceleration for AES-128/256, DES/3DES, SHA-1/256, and MD5 - all accessible via dedicated peripheral registers without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 120 MHz with FPU and MPU - enables floating-point math and memory isolation for safety-critical tasks. |
| Memory | 1 MB on-chip Flash + 256 KB SRAM + 2 KB hibernate SRAM - supports large firmware images and real-time data buffering without external memory. |
| Ethernet | Integrated 10/100 MAC + PHY (IEEE 802.3u) - eliminates external PHY chip and reduces BOM cost and board space. |
| USB | USB 2.0 OTG with internal transceiver - supports host, device, and OTG roles without external PHY or level-shifting components. |
| Crypto Acceleration | Dedicated AES-128/256, DES/3DES, SHA-1/256, MD5 engines - offloads encryption/decryption from CPU, reducing latency and power consumption. |
| Hibernation | Hibernate module with RTC, tamper detection, and VBAT backup - enables sub-1 µA deep-sleep mode with wake-on-event or time alarm. |
| Package | 128-pin LQFP (14 × 14 mm, 0.4 mm pitch) - standard surface-mount package compatible with automated assembly and thermal management. |
Pinout & Package
XM4C129ENCPDTI1 is housed in a 128-pin LQFP package (14 mm × 14 mm, 0.4 mm pitch) with exposed thermal pad. Pin assignments are defined per TI SPMS441B datasheet Rev B, Section 1.4 and Table 1-1 (Pin Assignments).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Separate domains for digital core (VDD), analog (VDDA), and USB/Ethernet (VDDC) - enable independent filtering and noise isolation. |
| ETH0_RX+, ETH0_RX−, ETH0_TX+, ETH0_TX− | Ethernet differential pairs | Direct connection to RJ-45 magnetics; integrated PHY eliminates need for external transceiver or termination resistors. |
| USB0_DP, USB0_DM | USB 2.0 differential data lines | Internal transceiver supports full-speed (12 Mbps) operation; no external pull-up or level shifters required. |
| HIB_RTCCLK, HIB_WAKE | Hibernation timing and wake inputs | Supports external 32.768 kHz crystal for RTC accuracy and GPIO-based wake events during hibernate mode. |
| GPIOA–GPIOJ | Configurable general-purpose I/O banks | 10 banks with up to 8 pins each; support slew-rate control, drive strength selection, and interrupt-on-change capability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Ethernet PHY | Reduces component count by one IC and simplifies layout - no external PHY, magnetics biasing, or MII/RMII interface routing needed. |
| Dual USB Interfaces | Single USB 2.0 OTG controller supports simultaneous Host/Device operation via software configuration - ideal for field-service tools and firmware updates. |
| Hibernate Module with Tamper | Enables secure low-power state with tamper-detection inputs and battery-backed RTC - meets IEC 62443-3-3 requirements for industrial security. |
| Hardware Crypto Engines | AES/SHA/MD5 acceleration runs independently of CPU - achieves >10 MB/s encryption throughput while freeing Cortex-M4F for application logic. |
| μDMA with 32 Channels | Offloads data movement from CPU across peripherals (UART, SPI, ADC, EPI) - maintains deterministic response under high-bandwidth I/O loads. |
Applications
| Industrial Ethernet Gateway | Secure Remote Terminal Unit (RTU) |
|---|---|
Use Scenario: Aggregating Modbus TCP, CANopen, and serial fieldbus data into a unified Ethernet backbone for SCADA systems. IC Role / Device Role / Timing Role: Primary application processor managing protocol translation, real-time scheduling, and secure TLS tunneling. Use Value: Integrated Ethernet PHY and crypto accelerators reduce latency and eliminate external components, improving time-to-market and long-term reliability. |
Use Scenario: Deployed in oil/gas wellhead controllers requiring tamper-proof logging, battery-backed event timestamps, and remote firmware updates over cellular. IC Role / Device Role / Timing Role: Secure edge controller with hibernation-aware RTC and hardware-accelerated firmware signature verification. Use Value: Tamper-detection inputs and hibernate SRAM ensure integrity of audit logs during power loss or physical intrusion attempts. |
| Programmable Logic Controller (PLC) I/O Module | Smart Building HVAC Controller |
Use Scenario: Compact DIN-rail mounted I/O expansion module with EtherNet/IP slave functionality and local motion control loop closure. IC Role / Device Role / Timing Role: Real-time deterministic controller executing PID loops and EtherNet/IP CIP messaging with <100 µs jitter. Use Value: Cortex-M4F FPU and μDMA enable precise floating-point calculations and zero-CPU-overhead peripheral data transfers. |
Use Scenario: Networked HVAC controller interfacing with BACnet MS/TP field devices and reporting to cloud via MQTT over Ethernet. IC Role / Device Role / Timing Role: Connectivity hub managing multiple serial protocols, Ethernet stack, and local UI rendering. Use Value: Dual USB and Ethernet allow concurrent field technician access (USB CDC) and cloud telemetry (Ethernet), minimizing service downtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XM4C1294NCPDTI1 | Same package and pinout; differs only in Flash size (1 MB vs. 512 KB) and SRAM (256 KB vs. 128 KB); identical peripheral set and crypto engines. | Preferred where larger firmware footprint or extended data buffering is required - e.g., multi-protocol stacks with TLS and OTA update capability. | Select XM4C1294NCPDTI1 when firmware image size exceeds 512 KB or application requires >128 KB runtime RAM. |
| STM32H743ZIT6 | ARM Cortex-M7 @ 480 MHz, 2 MB Flash, no integrated Ethernet PHY, requires external PHY; includes DSI and JPEG codec not present in XM4C129ENCPDTI1. | Better suited for high-resolution HMI or vision-assisted control; lacks native Ethernet PHY and hibernation tamper features critical for secure remote monitoring. | Choose STM32H743ZIT6 only if higher CPU performance or display/video features outweigh loss of integrated Ethernet and tamper-hardened hibernate. |
Compared with XM4C129ENCPDTI1, XM4C1294NCPDTI1 offers greater memory headroom within identical footprint and feature set, while STM32H743ZIT6 trades integrated connectivity and security for raw compute and multimedia capability - making XM4C129ENCPDTI1 optimal for compact, secure, wired industrial edge nodes.
Availability
XM4C129ENCPDTI1 is available at Aetrix Electronics and suitable for industrial gateways, secure RTUs, PLC I/O modules, and smart building controllers requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for XM4C129ENCPDTI1 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 communications markets with high-reliability silicon and software ecosystems.
The TM4C129 family - including XM4C129ENCPDTI1 - was designed specifically for industrial connectivity applications demanding integrated Ethernet, robust security, low-power hibernation, and real-time deterministic control in harsh environments.
FAQ
What is the operating temperature range for XM4C129ENCPDTI1?
The XM4C129ENCPDTI1 is rated for industrial temperature operation from –40°C to +105°C (ambient), validated per TI SPMS441B datasheet Section 1.13. This range ensures reliable operation in uncontrolled enclosures, outdoor cabinets, and factory-floor environments where thermal cycling and extended uptime are critical. The XM4C129ENCPDTI1 maintains full specification compliance across this range, including Ethernet PHY timing, USB signal integrity, and hibernate RTC accuracy.
Does XM4C129ENCPDTI1 support JTAG debugging?
Yes, XM4C129ENCPDTI1 supports full JTAG and ARM Serial Wire Debug (SWD) interfaces per Section 1.3.12 of the TI datasheet. It includes dedicated TCK, TMS, TDI, TDO, and TRST pins, plus SWDIO and SWCLK for SWD mode. Debug access remains functional in all sleep modes except hibernate, and the part supports real-time trace via TPIU for performance analysis in complex industrial firmware.
Can XM4C129ENCPDTI1 operate without an external crystal?
Yes, XM4C129ENCPDTI1 can operate using its internal precision oscillator (PIOSC) for system clock generation, eliminating the need for an external crystal in non-timing-critical applications. However, for Ethernet MAC synchronization, USB frame timing, and RTC accuracy, an external 25 MHz crystal (for system clock) and 32.768 kHz crystal (for hibernate RTC) are required - both explicitly supported by XM4C129ENCPDTI1's oscillator circuitry.
Is the Ethernet PHY in XM4C129ENCPDTI1 IEEE 802.3u-compliant?
Yes, the integrated Ethernet PHY in XM4C129ENCPDTI1 fully complies with IEEE 802.3u (100BASE-TX) and IEEE 802.3 (10BASE-T) standards, as confirmed in TI SPMS441B Section 11.3. It supports auto-negotiation, full/half-duplex operation, and MII/RMII interface modes. No external PHY IC, magnetics biasing resistors, or transformer center-tap termination is required - simplifying design and reducing bill-of-materials cost.
What development software is officially supported for XM4C129ENCPDTI1?
Texas Instruments provides official support for XM4C129ENCPDTI1 through TivaWare™ Peripheral Driver Library, Code Composer Studio™ IDE (with GCC and TI ARM compiler toolchains), and the Tiva C Series EK-TM4C1294XL evaluation kit. All drivers, examples, and bootloaders are validated against XM4C129ENCPDTI1's silicon revision and documented in the TM4C129x Firmware Development Package v2.2.0 and later releases.
XM4C129ENCPDTI1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 128-TQFP
- Series:
- Tiva™ C
- Packaging:
- Tray
- Product Status:
- Discontinued at Digi-Key
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4F
- Core Size:
- 32-Bit Single-Core
- Speed:
- 120MHz
- Connectivity:
- CANbus, EBI/EMI, Ethernet, I2C, IrDA, QSSI, UART/USART, USB OTG
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, QEI, WDT
- Number of I/O:
- 90
- Program Memory Size:
- 1MB (1M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 6K x 8
- RAM Size:
- 256K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.97V ~ 3.63V
- Data Converters:
- A/D 20x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
XM4C129ENCPDTI1 FAQ
1.How can I place an order for XM4C129ENCPDTI1 through Aetrix?
Please submit a Request for Quotation (RFQ) for XM4C129ENCPDTI1 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 XM4C129ENCPDTI1 reliable?
The price and inventory of XM4C129ENCPDTI1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XM4C129ENCPDTI1 is usually 5 days.
3.What payment methods are accepted for XM4C129ENCPDTI1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XM4C129ENCPDTI1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XM4C129ENCPDTI1?
XM4C129ENCPDTI1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XM4C129ENCPDTI1 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 XM4C129ENCPDTI1?
For technical support, including XM4C129ENCPDTI1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XM4C129ENCPDTI1 requirements.
6.How does Aetrix verify that XM4C129ENCPDTI1 is sourced from the original manufacturer or authorized distributors?
All XM4C129ENCPDTI1 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 XM4C129ENCPDTI1 meets industry standards.
7.What is the process for return or replacement of XM4C129ENCPDTI1?
All XM4C129ENCPDTI1 units undergo pre-shipment inspection (PSI). If there is an issue with XM4C129ENCPDTI1, 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 XM4C129ENCPDTI1 part is unused and in its original packaging.
Return procedure for XM4C129ENCPDTI1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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