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Texas Instruments TM4C129EKCPDTT3
- Part No.:
- TM4C129EKCPDTT3
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 128-TQFP
- Datasheet:
-
TM4C129EKCPDTT3.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 128TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,719
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Product details
Overview
TM4C129EKCPDTT3 from Texas Instruments is an ARM Cortex-M4F-based 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 a high-integration host controller in industrial gateways requiring deterministic real-time control, secure connectivity, and local protocol bridging.
For engineers reviewing the TM4C129EKCPDTT3 datasheet, TM4C129EKCPDTT3 pinout, TM4C129EKCPDTT3 application, or TM4C129EKCPDTT3 equivalent, key selection criteria include its integrated 10/100 Ethernet PHY, dual USB interfaces (OTG + device), hibernation module with RTC and tamper detection, and support for TivaWare™ software stack in safety-aware embedded designs.
Technical Context
The TM4C129EKCPDTT3 implements a full-featured ARM Cortex-M4F core with single-precision FPU, memory protection unit (MPU), and NVIC supporting 84 interrupt lines. Its system-level integration includes a dedicated hibernation module with battery-backed RAM, real-time clock, and tamper-detection circuitry - enabling ultra-low-power wake-up from deep sleep states without external components.
On-chip peripherals include a 16-channel μDMA controller, 12-bit 1-MSPS ADC with 16 analog inputs, four 32-bit timers (each expandable to two 16-bit), and dual CAN 2.0B controllers. The EPI interface supports SDRAM, NOR flash, and host-bus protocols - enabling expansion of memory and peripheral subsystems without FPGA glue logic.
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 RTOS-based safety partitioning. |
| Memory | 1 MB Flash + 256 KB SRAM + 6 KB EEPROM - sufficient for dual-application firmware images and persistent configuration storage. |
| Ethernet | Integrated 10/100 MAC + PHY (RMII/MII) - eliminates external PHY IC and reduces BOM cost and PCB area. |
| USB | USB 2.0 OTG + USB Device - supports host-peripheral dual-role operation for field-service tools and peripheral attachment. |
| Crypto Acceleration | Dedicated AES-128/256, DES/3DES, SHA-1/256, MD5 engines - offloads encryption from CPU, enabling TLS handshake under 100 ms at 120 MHz. |
| ADC | 12-bit, 1-MSPS, 16-channel SAR ADC with analog comparator - suitable for closed-loop motor control and sensor fusion without external signal conditioning. |
| Hibernation | Battery-backed 256-byte RAM, RTC, tamper detection, VBAT monitoring - maintains timekeeping and state across main power loss with <1.5 µA retention current. |
Pinout & Package
TM4C129EKCPDTT3 is housed in a 128-pin LQFP package (14 mm × 14 mm, 0.4 mm pitch) with exposed thermal pad. Pin assignments follow TI's standard Tiva C Series layout optimized for signal integrity in mixed-signal industrial environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO | Power supply rails | Separate 3.3 V domains for digital core, analog, and I/O - enable noise isolation for ADC and USB PHY. |
| EPH0–EPH7, EPM0–EPM3 | Ethernet PHY interface | Dedicated RMII pins (REFCLK, CRS_DV, RXD[1:0], TXD[1:0], TXEN) - direct connection to magnetics without level-shifting. |
| USB0VBUS, USB0ID, USB0DP/DM | USB OTG interface | Full-speed OTG signaling with ID detection - supports dynamic role switching between host and device modes. |
| HIB, RTCCLK, TAMPER0–2 | Hibernation subsystem | Dedicated hibernate entry, RTC crystal input, and three tamper inputs - enable secure low-power mode with intrusion detection. |
| GPIOA–G | Configurable I/O banks | Seven 8-bit GPIO ports with slew-rate control, pull-up/down, and interrupt capability per pin - support multiplexed peripheral functions and custom control signals. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Ethernet PHY | Reduces component count by eliminating external PHY IC and associated magnetics bias circuitry. |
| Dual USB Interfaces | Enables simultaneous USB device (e.g., CDC ACM) and OTG (e.g., USB flash drive access) operation without arbitration overhead. |
| Hibernation Module with Tamper | Provides secure, battery-backed state retention and physical intrusion detection - critical for unattended edge nodes. |
| Hardware Crypto Engines | Accelerates TLS 1.2 handshake and firmware signature verification in <120 ms - meets OTA update timing constraints. |
| EPI with SDRAM Support | Allows external 32-bit SDRAM up to 128 MB - extends runtime memory for protocol stacks (e.g., MQTT-SN, CoAP) and data buffering. |
Applications
| Industrial Gateway | Smart Energy Meter |
|---|---|
Use Scenario: Aggregating Modbus RTU, CAN bus, and RS-485 field devices into a cloud-connected Ethernet node with local edge logic. IC Role / Device Role / Timing Role: Central protocol translator and real-time scheduler with deterministic Ethernet packet handling and timestamped event logging. Use Value: Integrated Ethernet PHY and dual USB eliminate external transceivers; hibernation module preserves metering logs during brownouts. | Use Scenario: Residential electricity meter with remote firmware updates, tamper-proof energy accounting, and time-of-use tariff enforcement. IC Role / Device Role / Timing Role: Secure metering controller with cryptographic signing of kWh records and precise RTC-driven tariff switching. Use Value: Hardware AES/SHA engines ensure firmware authenticity; tamper inputs detect enclosure breach; battery-backed RTC maintains billing accuracy. |
| Programmable Logic Controller (PLC) | Building Automation Controller |
Use Scenario: Compact DIN-rail PLC executing ladder logic, motion control, and HMI communication over EtherNet/IP. IC Role / Device Role / Timing Role: Real-time I/O processor with deterministic timer interrupts, PWM generation, and EtherNet/IP CIP message handling. Use Value: 120 MHz Cortex-M4F + μDMA enables sub-10 ms scan cycles; EPI interface connects to external I/O expansion modules via SDRAM-mapped registers. | Use Scenario: HVAC controller managing BACnet MS/TP, DALI lighting, and occupancy sensors while reporting to building management systems via Ethernet. IC Role / Device Role / Timing Role: Multi-protocol convergence hub with concurrent serial bus masters and time-synchronized sensor sampling. Use Value: 16-channel ADC and GPIO flexibility support diverse sensor types; integrated Ethernet avoids external MAC+PHY latency jitter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TM4C1294NCPDT | Omits integrated Ethernet PHY; requires external PHY IC and magnetics. | Suitable where Ethernet is optional or implemented via external switch; lower BOM cost but larger footprint. | Select when Ethernet is not required on every node or when using managed Ethernet switches with external PHYs. |
| STM32H743VI | ARM Cortex-M7 @ 480 MHz, no integrated Ethernet PHY, no hibernation tamper detection, different crypto engine set (AES-GCM only). | Better raw compute for vision/AI inference; lacks secure hibernation and integrated PHY - needs external security IC and PHY. | Choose for high-throughput DSP tasks where Ethernet is handled externally and tamper resistance is not mandated. |
Compared with TM4C1294NCPDT and STM32H743VI, the TM4C129EKCPDTT3 uniquely combines integrated 10/100 Ethernet PHY, battery-backed hibernation with tamper inputs, and full-suite crypto acceleration - making it optimal for cost-sensitive, security-critical, and power-restricted industrial edge nodes requiring zero external PHY components.
Availability
TM4C129EKCPDTT3 is available at Aetrix Electronics and suitable for industrial gateways, smart energy meters, programmable logic controllers, and building automation controllers requiring stable component supply and long-term lifecycle support.
Supply support for TM4C129EKCPDTT3 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 and embedded processing solutions for industrial, automotive, and consumer markets since 1930.
The TM4C129EKCPDTT3 belongs to the Tiva™ C Series microcontroller family, designed specifically for industrial connectivity applications demanding integrated communications, security, and low-power operation in harsh environments.
FAQ
What is the maximum operating frequency of the TM4C129EKCPDTT3?
The TM4C129EKCPDTT3 operates at a maximum system clock frequency of 120 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 voltage and temperature ranges specified in the datasheet, enabling deterministic real-time execution for industrial control loops and protocol stacks.
Does the TM4C129EKCPDTT3 include an integrated Ethernet PHY?
Yes, the TM4C129EKCPDTT3 integrates a full 10/100 Ethernet PHY compliant with IEEE 802.3u, supporting both MII and RMII interfaces. It includes dedicated pins for REFCLK, CRS_DV, RXD[1:0], TXD[1:0], and TXEN, allowing direct connection to Ethernet magnetics without external PHY ICs - reducing BOM cost and board space in industrial networking applications.
What crypto acceleration capabilities does the TM4C129EKCPDTT3 provide?
The TM4C129EKCPDTT3 includes dedicated hardware accelerators for AES-128/256 (ECB/CBC/CTR/GCM), DES/3DES, SHA-1/224/256, and MD5. These engines operate independently of the CPU, enabling cryptographic operations such as TLS handshake completion in under 120 ms while freeing the Cortex-M4F core for application logic - essential for secure OTA firmware updates.
How does the hibernation module function in the TM4C129EKCPDTT3?
The TM4C129EKCPDTT3 hibernation module provides battery-backed 256-byte RAM, a real-time clock (RTC), three tamper detection inputs, and VBAT monitoring. When entering hibernate mode, the device draws less than 1.5 µA while preserving RTC time and critical state. Wake-up can occur via RTC alarm, external pin, or tamper event - ensuring reliable operation during main power failure in smart metering and remote monitoring systems.
Is the TM4C129EKCPDTT3 pin-compatible with other Tiva C Series microcontrollers?
No, the TM4C129EKCPDTT3 is not pin-compatible with earlier Tiva C Series devices like the TM4C123 or TM4C129x variants without integrated PHY. Its 128-pin LQFP package includes unique Ethernet PHY and hibernation-specific pins (e.g., EPH0–EPH7, TAMPER0–2, HIB) that differ in placement and function from non-PHY Tiva parts - requiring dedicated PCB layout.
TM4C129EKCPDTT3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 128-TQFP
- Series:
- Tiva™ C
- Packaging:
- Tray
- Product Status:
- Active
- 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, Motion Control PWM, POR, PWM, WDT
- Number of I/O:
- 90
- Program Memory Size:
- 512KB (512K 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
TM4C129EKCPDTT3 FAQ
1.How can I place an order for TM4C129EKCPDTT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C129EKCPDTT3 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 TM4C129EKCPDTT3 reliable?
The price and inventory of TM4C129EKCPDTT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C129EKCPDTT3 is usually 5 days.
3.What payment methods are accepted for TM4C129EKCPDTT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C129EKCPDTT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C129EKCPDTT3?
TM4C129EKCPDTT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C129EKCPDTT3 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 TM4C129EKCPDTT3?
For technical support, including TM4C129EKCPDTT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C129EKCPDTT3 requirements.
6.How does Aetrix verify that TM4C129EKCPDTT3 is sourced from the original manufacturer or authorized distributors?
All TM4C129EKCPDTT3 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 TM4C129EKCPDTT3 meets industry standards.
7.What is the process for return or replacement of TM4C129EKCPDTT3?
All TM4C129EKCPDTT3 units undergo pre-shipment inspection (PSI). If there is an issue with TM4C129EKCPDTT3, 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 TM4C129EKCPDTT3 part is unused and in its original packaging.
Return procedure for TM4C129EKCPDTT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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