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HomeProductsIntegrated Circuits (ICs)Embedded - MicroprocessorsOMAPL138EZWTD4
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OMAPL138EZWTD4 - Texas Instruments

Manufacturer Part Number
OMAPL138EZWTD4
Manufacturer
Texas Instruments
Allelco Part Number
32D-OMAPL138EZWTD4
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
4,061 pcs available, New & Original
Parts Description
IC MPU OMAP-L1X 456MHZ 361NFBGA
Package
361-NFBGA (16x16)
Data sheet
OMAPL138EZWTD4.pdf

HTML Datasheet

OMAP-L138 Datasheet.pdf

PCN Assembly/Origin

2.73KHz.pdf

PCN Design/Specification

Cylindrical Battery Holders.pdf
RoHs Status
ROHS3 Compliant
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In stock: 4061
  • Unit Price: $23.22
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Specifications

OMAPL138EZWTD4 Tech Specifications
Texas Instruments - OMAPL138EZWTD4 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - OMAPL138EZWTD4

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - I/O 1.8V, 3.3V
USB USB 1.1 + PHY (1), USB 2.0 + PHY (1)
Supplier Device Package 361-NFBGA (16x16)
Speed 456MHz
Series OMAP-L1x
Security Features Boot Security, Cryptography
SATA SATA 3Gbps (1)
RAM Controllers SDRAM
Package / Case 361-LFBGA
Package Tray
Product Attribute Attribute Value
Operating Temperature -40°C ~ 90°C (TJ)
Number of Cores/Bus Width 1 Core, 32-Bit
Mounting Type Surface Mount
Graphics Acceleration No
Ethernet 10/100Mbps (1)
Display & Interface Controllers LCD
Core Processor ARM926EJ-S
Co-Processors/DSP Signal Processing; C674x, System Control; CP15
Base Product Number OMAPL138
Additional Interfaces HPI, I²C, McASP, McBSP, MMC/SD, SPI, UART

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN 3A991A2
HTSUS 8542.31.0001

Parts Introduction

OMAPL138EZWTD4 Image
OMAPL138EZWTD4 (1)

Manufacturer Part Number

OMAPL138EZWTD4

Manufacturer

Texas Instruments

Introduction

The OMAPL138EZWTD4 is a high-performance, embedded microprocessor from Texas Instruments, designed for intensive signal processing and system control tasks.

Product Features and Performance

Integrated ARM926EJ-S core operating at 456MHz for efficient processing

On-chip C674x DSP for advanced signal processing

CP15 system control co-processor for effective system management

Supports SDRAM memory controllers for improved memory access

No graphics acceleration but includes an LCD display controller for basic display functions

Embedded Ethernet controller supporting 10/100Mbps speeds for network connectivity

SATA 3Gbps interface for high-speed data storage devices

USB connectivity with support for USB 1.1 and USB 2.0 including PHY for direct interface with USB devices

Operates across a wide voltage range (1.8V, 3.3V) for versatile power management

Operates in a wide temperature range (-40°C to 90°C) for use in challenging environmental conditions

Product Advantages

Integrated DSP and ARM core allows for simultaneous signal processing and system control

Wide range of connectivity options including Ethernet, SATA, and USB for comprehensive peripheral integration

Supports multiple communication interfaces like HPI, I2C, McASP, McBSP, MMC/SD, SPI, UART for extensive application flexibility

Enhanced security features including boot security and cryptography protect against unauthorized access

OMAPL138EZWTD4 Image
OMAPL138EZWTD4 (2)

Key Technical Parameters

Core Processor: ARM926EJ-S, 32-Bit

Speed: 456MHz

Co-Processors/DSP: C674x Signal Processing, System Control; CP15

RAM Controllers: SDRAM

Ethernet: 10/100Mbps

SATA: 3Gbps

USB: USB 1.1 + PHY, USB 2.0 + PHY

Voltage I/O: 1.8V, 3.3V

Operating Temperature: -40°C to 90°C

Quality and Safety Features

Rigorous quality and safety standards ensure reliable operation and durability in various applications.

Compatibility

Wide interface support ensures compatibility with a range of peripherals and other devices.

Application Areas

Industrial automation

Medical imaging

Networking equipment

Home entertainment systems

Product Lifecycle

The OMAPL138EZWTD4 is currently active and not nearing discontinuation, with ongoing support and availability of replacements or upgrades.

Several Key Reasons to Choose This Product

High-performance integrated ARM and DSP cores offer exceptional processing capabilities.

Broad connectivity and interface support facilitate versatile application integration.

Robust security features ensure protection against tampering and unauthorized access.

Reliable operation across a wide temperature range meets demands of tough environments.

Texas Instruments' commitment to quality and long product lifecycle reduces the risk of obsolescence and ensures long-term availability.

Frequently Asked Questions(FAQ)

What are the key differences between the OMAPL138EZWTD4 and other processors in the OMAP-L1x series, particularly regarding core architecture and real-time processing capabilities?
The OMAPL138EZWTD4 integrates an ARM926EJ-S core operating at 456MHz, distinguishing it from other OMAP-L1x variants that may use different ARM architectures or lower clock speeds. Its inclusion of a C674x fixed-point DSP subsystem enables efficient signal processing tasks without burdening the main CPU, making it suitable for embedded control applications requiring deterministic response times. This dual-core approach allows software to offload mathematical operations such as filtering or FFT computation to the DSP, improving overall system performance while maintaining low power consumption.
How does the OMAPL138EZWTD4 support secure boot and cryptographic functions, and what design considerations should be taken when implementing these features?
The OMAPL138EZWTD4 incorporates hardware-based security features including boot ROM with authentication logic and dedicated cryptographic accelerators supporting algorithms like AES and DES. These enable secure firmware validation during startup and encrypted data transmission over interfaces such as Ethernet or USB. Engineers should ensure that private keys are stored in secure non-volatile memory and that the boot loader enforces signature verification before executing code. Additionally, disabling unused peripherals and managing I/O voltage domains appropriately can prevent side-channel leakage during cryptographic operations.
Can the OMAPL138EZWTD4 drive standard LCD panels directly, and what interface requirements must be met for reliable display operation?
Yes, the OMAPL138EZWTD4 includes an integrated LCD controller capable of driving various parallel RGB interfaces up to 24-bit color depth. To operate a typical TFT panel, designers must configure the timing generator to match pixel clock, horizontal sync, vertical sync, and data enable signals. Voltage levels on the display interface typically require 3.3V I/O, which aligns with the device’s 3.3V rail capability. Proper decoupling and impedance matching are essential to avoid signal integrity issues at higher resolutions. External frame buffers or DDR SDRAM may be needed if the application demands large color depths or fast refresh rates.
What memory configuration options are available when using the OMAPL138EZWTD4, and how do they affect system latency and bandwidth?
The OMAPL138EZWTD4 supports external SDRAM via its synchronous memory interface, allowing connection to devices such as Micron MT48LC16M16 or similar 16Mb x 16 configurations. System performance depends heavily on SDRAM type; for example, a -7E (70ns) part provides adequate access for many applications but limits maximum burst length and refresh overhead. Using a faster -6S (60ns) SDRAM can reduce wait states and improve throughput for data-intensive tasks like video decoding. Careful PCB layout—including matched trace lengths and proper termination—is critical to maintain signal integrity and meet setup/hold times specified in the memory datasheet.
How should the OMAPL138EZWTD4 be powered to ensure stable operation across industrial temperature ranges, and what precautions apply during transient load changes?
The OMAPL138EZWTD4 requires multiple voltage rails: core voltage (typically 1.2V), I/O banks at 1.8V and 3.3V, and auxiliary supplies for analog components. A linear regulator or PMIC capable of sourcing sufficient current with low noise is recommended for the core supply. For 3.3V and 1.8V rails, switching regulators with adequate output capacitance and soft-start control help suppress inrush current and ripple. During rapid transitions—such as when enabling USB PHY or SATA link training—local bulk capacitors near the package pins minimize voltage droop. Thermal derating must also be considered, especially since junction temperature exceeds 90°C under full load.
Is the OMAPL138EZWTD4 suitable for battery-powered embedded systems, and what architectural features contribute to its efficiency?
While not optimized for ultra-low-power mobile applications, the OMAPL138EZWTD4 offers several power-saving mechanisms including dynamic voltage scaling, clock gating per functional block, and sleep modes where the ARM core can halt while the DSP remains active. In typical idle scenarios, core current might drop below 100mA at 456MHz, though active DSP workloads increase consumption significantly. Designers can leverage wake-up interrupts from GPIO, UART, or Ethernet MAC to transition between operational states efficiently. However, compared to modern Cortex-A series SoCs, its static leakage and maximum frequency make it less ideal for long-duration portable deployments.
What development tools and debug interfaces does the OMAPL138EZWTD4 support, and how do they facilitate firmware development?
The OMAPL138EZWTD4 supports JTAG debugging through its Test Access Port (TAP), enabling instruction-level tracing and flash programming via XDS100-class emulators. Serial boot modes allow loading code from MMC/SD cards or UART-connected hosts, which simplifies initial bring-up. Texas Instruments provides Code Composer Studio (CCS) with optimized libraries for DSP acceleration and Linux BSPs for OS porting. Debugging multithreaded software involving both ARM and DSP requires coordination via shared message queues or mailbox registers, which CCS can visualize through integrated analysis tools.
How does the presence of both USB 1.1 and USB 2.0 controllers impact system design complexity when using the OMAPL138EZWTD4?
The dual USB ports—one compliant with USB 1.1 and another with USB 2.0 HS—allow flexible peripheral connectivity but require careful resource allocation. Only one port can act as host at a time due to shared arbitration logic, and each consumes significant pin count and internal bandwidth. Engineers must ensure proper pull-up/pull-down resistors on D+/D- lines and allocate sufficient DMA channels for high-speed transfers. Additionally, power budgeting becomes critical since USB 2.0 enumeration can draw up to 500mA, necessitating external VBUS regulation and compliance with ESD protection standards.
What role does the HPI interface play when integrating the OMAPL138EZWTD4 with external digital signal processors, and what performance limitations should be expected?
The Host Port Interface (HPI) on the OMAPL138EZWTD4 enables high-bandwidth communication with an external TMS320C674x DSP or similar processor, typically used in heterogeneous computing architectures. It operates over 16-bit parallel bus with interrupt-driven handshaking, supporting data transfer rates up to 50 MB/s under ideal conditions. However, actual throughput is limited by ARM-side buffer management and interrupt latency. Applications involving real-time audio or motor control often benefit from this co-processing model, though software overhead increases when frequently transferring small packets. Optimized drivers using scatter-gather DMA minimize CPU utilization.
Can the OMAPL138EZWTD4 interface with industrial-grade sensors or actuators requiring RS-485 communication, and what hardware modifications are necessary?
The OMAPL138EZWTD4 lacks native RS-485 transceiver circuitry but includes UART modules compatible with TTL logic levels. To implement RS-485, engineers must add external transceivers like SN65HVD72, which provide differential signaling and hot-swap protection. Control of transmit/receive direction requires GPIO pins configured to manage DE and RE inputs based on TX/RX activity. Termination resistors and common-mode chokes should be placed close to the connector to suppress electromagnetic interference. Firmware must handle half-duplex timing constraints and collision detection if using multi-drop networks.
How does the SATA interface on the OMAPL138EZWTD4 compare to PCIe alternatives in terms of throughput and application suitability?
The SATA 3Gbps interface on the OMAPL138EZWTD4 provides up to 300 MB/s theoretical bandwidth, sufficient for connecting SSDs or HDDs in embedded storage systems. Unlike PCIe, SATA uses point-to-point serial links with NCQ and hot-plug support, simplifying host controller design. However, PCIe offers higher aggregate bandwidth and scalability for multi-device topologies, making it preferable in high-performance computing environments. For most industrial automation or medical imaging applications, SATA strikes a balance between cost, power, and reliability, especially when paired with error-correcting file systems.
What factors influence the choice between using the McASP or McBSP peripherals on the OMAPL138EZWTD4 for audio codec interfacing?
The Multi-channel Audio Serial Port (McASP) is better suited for professional audio applications requiring multiple channels (up to 32) with independent sample rates and TDM framing, while the Multi-channel Buffered Serial Port (McBSP) supports simpler two-wire interfaces commonly found in consumer codecs. McASP consumes more pins but offers greater flexibility in clocking and word length. McBSP is ideal for mono or stereo CODECs like PCM5102, reducing pin usage and simplifying PCB routing. Selection depends on required channel count, synchronization needs, and whether bit-perfect dithering or ditherless mode is needed.
Does the OMAPL138EZWTD4 support Linux-based operating systems, and what kernel version or patches might be required?
Yes, the OMAPL138EZWTD4 runs Linux distributions such as Angstrom or custom builds based on kernel versions 2.6.x to 3.x, depending on TI’s SDK release. Official BSPs include device tree overlays for LCD, Ethernet, and USB, but certain features like SATA or HPI may require manual configuration. Real-time extensions such as PREEMPT_RT can be applied to reduce scheduling latency, beneficial for hard real-time tasks. Engineers should verify driver compatibility for specific peripherals and validate boot sequence stability under worst-case memory loads.
How does the Moisture Sensitivity Level (MSL) rating of 3 for the OMAPL138EZWTD4 affect handling during manufacturing, and what precautions should be observed?
With an MSL of 3 (168 hours exposure limit after opening sealed packaging), the OMAPL138EZWTD4 must be reflow soldered within 168 hours at temperatures below 30°C and 60% relative humidity. If exceeded, moisture absorption risks popcorning during reflow, potentially damaging the 361-pin NFBGA package. Manufacturers should store parts in dry cabinets (<10% RH) and track bake-out cycles if shelf life is exceeded. Automated optical inspection (AOI) helps detect solder joint defects early, but rework requires precise thermal profiling to avoid delamination.
What are the implications of the OMAPL138EZWTD4’s operating temperature range (-40°C to 90°C) for automotive or ruggedized designs?
The extended industrial temperature range allows deployment in environments with wide ambient fluctuations, such as factory floors or outdoor enclosures. However, internal self-heating during peak DSP load may push junction temperature beyond 90°C, violating specifications unless heatsinking or airflow is provided. Thermal modeling using TI’s PowerTrench tools helps estimate delta-T across package layers. Reliability testing per JEDEC JESD22-A104 ensures solder fatigue resistance under thermal cycling, but long-term drift in analog blocks (e.g., PLL jitter) should be monitored through field calibration routines.
Can the OMAPL138EZWTD4 be used in safety-critical systems requiring functional safety certification, and what additional measures are necessary?
While the OMAPL138EZWTD4 itself is not certified to ISO 26262 or IEC 61508, it can serve as the compute engine in Class C or D systems when supplemented with watchdog timers, memory ECC, and fault injection logging. Redundant execution paths and periodic health checks enhance diagnostic coverage. Software must implement stack overflow protection and restrict privileged mode access. Third-party safety IP cores interfaced via HPI or SPI can add monitoring layers, though formal verification of timing behavior remains the designer’s responsibility.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments OMAPL138EZWTD4

Product Attribute OMAPL138EZWTD4E OMAPL138EZWTD4RW OMAPL138EZWTQ4R OMAPL138EZWTQ4
Part Number OMAPL138EZWTD4E OMAPL138EZWTD4RW OMAPL138EZWTQ4R OMAPL138EZWTQ4
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Co-Processors/DSP - - - -
USB - - - -
Speed - - - -
SATA - - - -
Core Processor - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Additional Interfaces - - - -
Number of Cores/Bus Width - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Display & Interface Controllers - - - -
Graphics Acceleration - - - -
Security Features - - - -
Ethernet - - - -
Voltage - I/O - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
RAM Controllers - - - -
Series - - - -

OMAPL138EZWTD4 Datasheet PDF

Download OMAPL138EZWTD4 pdf datasheets and Texas Instruments documentation for OMAPL138EZWTD4 - Texas Instruments.

HTML Datasheet
OMAP-L138 Datasheet.pdf
PCN Assembly/Origin
2.73KHz.pdf
PCN Design/Specification
Cylindrical Battery Holders.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
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New Zealand 5
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Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
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OMAPL138EZWTD4 Image

OMAPL138EZWTD4

Texas Instruments
32D-OMAPL138EZWTD4

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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