{"id":3304,"date":"2026-06-01T00:45:20","date_gmt":"2026-06-01T00:45:20","guid":{"rendered":"https:\/\/materialparts.com\/omapl138ezwtd4\/"},"modified":"2026-06-01T00:45:20","modified_gmt":"2026-06-01T00:45:20","slug":"omapl138ezwtd4","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/omapl138ezwtd4\/","title":{"rendered":"OMAPL138EZWTD4"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The OMAPL138EZWTD4 from Texas Instruments is a low-power dual-core SoC integrating an ARM926EJ-S RISC processor running up to 456MHz and a C674x VLIW floating-point DSP also running up to 456MHz. This combination enables simultaneous real-time signal processing on the DSP and general-purpose computing on the ARM core. The device features 256KB of L2 SRAM, 128KB of shared RAM, and supports DDR2\/mDDR external memory. It is packaged in a 361-pin NFBGA (ZWT) package with extended industrial temperature range (-40 to 90\u00b0C).<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
ARM Core<\/td>\nARM926EJ-S up to 456MHz<\/td>\n<\/tr>\n
DSP Core<\/td>\nC674x (fixed + floating-point) up to 456MHz<\/td>\n<\/tr>\n
DSP Performance<\/td>\nUp to 3648 MIPS \/ 2746 MFLOPS<\/td>\n<\/tr>\n
L2 SRAM<\/td>\n256KB<\/td>\n<\/tr>\n
Shared RAM<\/td>\n128KB<\/td>\n<\/tr>\n
External Memory<\/td>\nDDR2\/mDDR, EMIFA (NAND\/NOR\/SDRAM)<\/td>\n<\/tr>\n
Peripherals<\/td>\nUSB 2.0 OTG, EMAC 10\/100, SATA, LCD, McASP<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 to 90\u00b0C (D suffix)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n361-pin NFBGA (ZWT), 16x16mm<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Dual-core ARM9 + C674x DSP architecture for heterogeneous processing<\/li>\n
  • C674x DSP supports IEEE single and double-precision floating-point<\/li>\n
  • 256KB L2 configurable RAM\/cache, 128KB shared RAM<\/li>\n
  • Enhanced DMA (EDMA3) with 64 independent channels<\/li>\n
  • Programmable Real-Time Unit (PRU) subsystem for deterministic I\/O<\/li>\n
  • Multiple interfaces: USB 2.0 OTG, SATA, EMAC, LCD, McASP, SPI, I2C, UART<\/li>\n
  • DDR2\/mDDR and EMIFA external memory controllers<\/li>\n
  • Low power consumption for battery-operated applications<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Medical imaging and portable ultrasound<\/li>\n
    • Industrial vision and video processing<\/li>\n
    • Software-defined radio and communications<\/li>\n
    • Audio and voice processing systems<\/li>\n
    • Test and measurement equipment<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The OMAPL138EZWTD4 from Texas Instruments is a low-power dual-core SoC integrating an ARM926EJ-S RISC processor running up to 456MHz and a C674x VLIW floating-point DSP also running up to 456MHz. This combination enables simultaneous real-time signal processing on the DSP and general-purpose computing on the ARM core. The device features 256KB of L2 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,25],"tags":[],"chip_brand":[138],"class_list":["post-3304","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-microcontrollers-mcu","chip_brand-ti"],"acf":{"brief_explanation":"ARM9 + C674x DSP dual-core SoC, 456MHz, 256KB L2, DDR2\/mDDR, NFBGA-361","date_code":"","package_case":"361-pin NFBGA (ZWT) (16 x 16 mm, 0.8mm pitch)","in_stock":4286,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/omap-l138.pdf","price":"$19.35 @ 1ku","product_introduction":"The OMAPL138EZWTD4 is a low-power dual-core processor from Texas Instruments that combines an ARM926EJ-S general-purpose processor with a C674x floating-point DSP. This heterogeneous architecture enables designers to run an operating system (Linux, RTOS) on the ARM core while executing compute-intensive signal processing algorithms on the DSP core. With up to 3648 MIPS and 2746 MFLOPS of DSP performance, the device handles demanding real-time signal processing tasks including audio, video, and communications algorithms. The PRU subsystem adds deterministic I\/O processing capability. Rich peripheral integration including USB 2.0 OTG, SATA, EMAC, and multiple serial interfaces reduces system BOM complexity.","working_principle":"The OMAPL138 operates with two independent processing cores connected through a Switched Central Resource (SCR) interconnect. The ARM926EJ-S core executes general-purpose code with a 16KB I-cache and 16KB D-cache, handling OS, networking, and user interface tasks. The C674x DSP core features 8 functional units (6 ALUs, 2 multipliers) capable of executing up to 8 instructions per cycle, with dedicated L1P (32KB) and L1D (32KB) caches plus 256KB of L2 SRAM. Both cores access peripherals and external memory through the SCR. The EDMA3 controller handles background data transfers without CPU intervention. The PRU subsystem provides two independent 32-bit RISC cores with deterministic cycle timing for real-time I\/O control. Power management includes multiple clock domains and power domains for fine-grained power control.","pin_description":"
      Pin Group<\/th>Count<\/th>Type<\/th>Function<\/th><\/tr>
      DDR2\/mDDR<\/td>38<\/td>I\/O<\/td>DDR2 memory interface (data, address, control)<\/td><\/tr>
      EMIFA<\/td>30<\/td>I\/O<\/td>External memory interface (NAND\/NOR\/SDRAM)<\/td><\/tr>
      USB<\/td>14<\/td>I\/O<\/td>USB 2.0 OTG and USB 1.1 OHCI<\/td><\/tr>
      EMAC\/MDIO<\/td>14<\/td>I\/O<\/td>Ethernet MAC interface<\/td><\/tr>
      SATA<\/td>4<\/td>I\/O<\/td>Serial ATA interface<\/td><\/tr>
      LCD<\/td>16<\/td>Output<\/td>LCD controller data and timing<\/td><\/tr>
      McASP\/Serial<\/td>24<\/td>I\/O<\/td>Audio, SPI, I2C, UART<\/td><\/tr>
      Power\/GND<\/td>100+<\/td>Power<\/td>Multiple core, I\/O, and analog supply pins<\/td><\/tr><\/table>","application_scenarios":"
      • Portable medical imaging and ultrasound devices with ARM GUI + DSP processing<\/li>
      • Industrial vision systems with real-time image processing on DSP<\/li>
      • Software-defined radio platforms requiring floating-point DSP and ARM control<\/li>
      • Multi-channel audio processing and professional recording equipment<\/li>
      • Test and measurement instruments with signal analysis and network connectivity<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>OMAPL138EZWTD4E<\/td>NFBGA-361<\/td>Extended temp -40 to 105\u00b0C<\/td><\/tr>
        TI<\/td>AM1808EZCE<\/td>NFBGA-361<\/td>ARM9 only (no DSP), lower cost<\/td><\/tr>
        TI<\/td>TMS320C6748<\/td>BGA-256<\/td>C674x DSP only, no ARM core<\/td><\/tr>
        Xilinx<\/td>Zynq 7010<\/td>BGA-400<\/td>Dual ARM Cortex-A9 + FPGA fabric<\/td><\/tr>
        TI<\/td>AM3358<\/td>BGA-324<\/td>Cortex-A8 + PRU-ICSS, no DSP<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3304","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=3304"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3304\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=3304"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=3304"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=3304"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=3304"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}