{"id":6911,"date":"2026-06-22T02:06:19","date_gmt":"2026-06-22T02:06:19","guid":{"rendered":"https:\/\/materialparts.com\/23lc1024-i-st\/"},"modified":"2026-06-22T02:06:19","modified_gmt":"2026-06-22T02:06:19","slug":"23lc1024-i-st","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/23lc1024-i-st\/","title":{"rendered":"23LC1024-I\/ST"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The 23LC1024-I\/ST from Microchip Technology is a 1Mbit SPI serial SRAM with 20MHz clock speed, SDI\/SQI interface options, and unlimited read\/write endurance in a TSSOP-8 package.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0646\u0648\u0639<\/td>\n1Mbit SPI Serial SRAM<\/td>\n<\/tr>\n
\u0627\u0644\u0643\u062b\u0627\u0641\u0629<\/td>\n1 Mbit (128 Kbyte)<\/td>\n<\/tr>\n
Organization<\/td>\n131,072 x 8 bits<\/td>\n<\/tr>\n
\u0627\u0644\u0648\u0627\u062c\u0647\u0629<\/td>\nSPI (SDI) \/ Quad SPI (SQI)<\/td>\n<\/tr>\n
Max Clock Speed<\/td>\n20 MHz (SPI); 104 Mbps (SQI)<\/td>\n<\/tr>\n
Read\/Write Endurance<\/td>\nUnlimited<\/td>\n<\/tr>\n
Access Time<\/td>\n25 ns (SPI sequential)<\/td>\n<\/tr>\n
Active Current<\/td>\n5 mA (typical @ 20MHz)<\/td>\n<\/tr>\n
\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0627\u062d\u062a\u064a\u0627\u0637\u064a<\/td>\n5 uA (typical)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n2.5V to 5.5V<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nTSSOP-8 (4.4 x 3.0 mm)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40C to +85C (I grade)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 1Mbit (128KB) SPI serial SRAM<\/li>\n
  • Unlimited read\/write endurance (no wear)<\/li>\n
  • SPI (SDI) and Quad SPI (SQI) modes<\/li>\n
  • 20 MHz SPI clock speed<\/li>\n
  • Sequential and page-mode access<\/li>\n
  • Low standby current: 5 uA<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • MCU external RAM expansion<\/li>\n
    • Audio\/video buffering<\/li>\n
    • Data logging and circular buffers<\/li>\n
    • Graphics frame buffers<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The 23LC1024-I\/ST from Microchip Technology is a 1Mbit SPI serial SRAM with 20MHz clock speed, SDI\/SQI interface options, and unlimited read\/write endurance in a TSSOP-8 package. Key Specifications Type 1Mbit SPI Serial SRAM Density 1 Mbit (128 Kbyte) Organization 131,072 x 8 bits Interface SPI (SDI) \/ Quad SPI (SQI) Max Clock Speed […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19,13],"tags":[],"chip_brand":[134],"class_list":["post-6911","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-microchip"],"acf":{"brief_explanation":"1Mbit SPI SRAM, 20MHz, Unlimited R\/W, SQI, TSSOP-8","date_code":"","package_case":"TSSOP-8 (4.4 x 3.0 x 1.0 mm)","in_stock":5678,"datasheet":"https:\/\/ww1.microchip.com\/downloads\/en\/DeviceDoc\/20005142C.pdf","price":"$1.10 @ 1ku","product_introduction":"The 23LC1024-I\/ST from Microchip Technology is a 1Mbit (128 Kbyte) serial SRAM with SPI and Quad SPI (SQI) interfaces in a TSSOP-8 package. Unlike flash memory or EEPROM, SRAM provides unlimited read\/write endurance with no wear mechanism, making it ideal for frequently updated data buffers and working memory. The device supports three interface modes: standard SPI (SDI, single data in), and Quad SPI (SQI, four data lines) for 4x throughput. The 20 MHz SPI clock provides up to 20 Mbit\/s throughput in SDI mode, while SQI mode achieves 80 Mbit\/s effective data rate at 20 MHz clock. The sequential read\/write mode allows continuous access to the entire memory array with a single address, ideal for circular buffers and DMA transfers. The 2.5V to 5.5V supply range supports both 3.3V and 5V systems. The 5 uA standby current is suitable for battery-backed applications.","working_principle":"The 23LC1024 uses a 6-transistor SRAM cell array organized as 131,072 x 8 bits. The memory is accessed through an SPI-compatible serial interface using standard command opcodes: READ (0x03), WRITE (0x02), EDIO (0x3B) for SDI mode, and EQIO (0x38) for SQI mode. In SPI mode, the master sends an 8-bit opcode followed by a 24-bit address (only lower 17 bits used), then reads or writes data. Sequential mode allows continuous read\/write without re-issuing the address - the internal address counter auto-increments and wraps around at the memory boundary. In SQI mode, data is transferred on all four I\/O pins simultaneously, quadrupling the effective throughput. The SRAM cells use a bistable flip-flop structure that retains data as long as power is applied, with no refresh requirement (unlike DRAM). The unlimited endurance is inherent to SRAM - the read and write operations are non-destructive and don't involve charge movement through oxide layers.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>CS<\/td>Input<\/td>Chip select (active LOW)<\/td><\/tr>
      2<\/td>SO\/SIO1<\/td>I\/O<\/td>SPI data out \/ SQI data 1<\/td><\/tr>
      3<\/td>NC\/SIO2<\/td>I\/O<\/td>No connect (SPI) \/ SQI data 2<\/td><\/tr>
      4<\/td>VSS<\/td>Power<\/td>Ground<\/td><\/tr>
      5<\/td>SI\/SIO0<\/td>I\/O<\/td>SPI data in \/ SQI data 0<\/td><\/tr>
      6<\/td>SCK<\/td>Input<\/td>Serial clock<\/td><\/tr>
      7<\/td>HOLD\/SIO3<\/td>I\/O<\/td>Hold (SPI) \/ SQI data 3<\/td><\/tr>
      8<\/td>VDD<\/td>Power<\/td>Supply voltage (2.5-5.5V)<\/td><\/tr><\/table>","application_scenarios":"
      • 8-bit MCU external 128KB RAM expansion via SPI for audio processing<\/li>
      • Data logger circular buffer with unlimited endurance for continuous writes<\/li>
      • Small LCD frame buffer with SQI 80Mbps throughput for 320x240 display<\/li>
      • Voice recognition working memory with 5uA standby for battery backup<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Microchip<\/td>23LC512-I\/ST<\/td>TSSOP-8<\/td>512Kbit, half density<\/td><\/tr>
        Microchip<\/td>23LCV1024-I\/ST<\/td>TSSOP-8<\/td>Battery-backed SRAM version<\/td><\/tr>
        ISSI<\/td>IS66WVS1M8BLL-104NLI<\/td>DFN-8<\/td>1Mbit SPI PSRAM, lower cost<\/td><\/tr>
        AP Memory<\/td>APS6404L-3SQR-SN<\/td>SOP-8<\/td>4Mbit SPI PSRAM, higher density<\/td><\/tr>
        Espressif<\/td>ESP-PSRAM64<\/td>SOP-8<\/td>64Mbit PSRAM for ESP32<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6911","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=6911"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6911\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6911"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6911"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6911"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}