\n| \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n | -40 to +125 C<\/td>\n<\/tr>\n<\/table>\n\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n\n- 256Kbit with 128-byte page write<\/li>\n
- 1MHz I2C fast-mode plus<\/li>\n
- 1 million cycle endurance<\/li>\n
- 200+ year data retention<\/li>\n
- Hardware write protect pin<\/li>\n<\/ul>\n
\u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n\n- Industrial calibration data storage<\/li>\n
- Automotive configuration EEPROM<\/li>\n
- Medical device settings<\/li>\n
- Network equipment MAC address<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"
Product Overview The CAT24C256WI-GT3 from onsemi is a 256Kbit I2C Serial EEPROM with 1MHz clock, 128-byte page write, and 1M cycle endurance in SOIC-8. Key Specifications Density 256 Kbit (32K x 8) Interface I2C (2-wire) Max Clock 1 MHz Supply Voltage 1.7V to 5.5V Write Endurance 1,000,000 cycles Data Retention > 200 years Page Size […]<\/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":[13],"tags":[],"chip_brand":[144],"class_list":["post-7635","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","chip_brand-on"],"acf":{"brief_explanation":"256Kbit I2C EEPROM, 1MHz, 1M cycle, SOIC-8","date_code":"","package_case":"SOIC-8 (4.90 x 3.90 x 1.25 mm)","in_stock":18000,"datasheet":"https:\/\/www.onsemi.com\/pdf\/datasheet\/cat24c256-d.pdf","price":"$0.54 @ 1ku","product_introduction":"The CAT24C256WI-GT3 from onsemi is a 256Kbit (32K x 8) I2C serial EEPROM in SOIC-8. It supports 1MHz I2C fast-mode plus, 128-byte page write, and exceptional 1 million cycle endurance with greater than 200-year data retention. The device uses a standard 2-wire I2C interface with up to 4 devices sharing the same bus via A0, A1 address pins. The hardware write protect (WP) pin prevents accidental data modification. The GT3 suffix denotes SOIC-8 with automotive temperature range (-40 to +125C).","working_principle":"The CAT24C256WI-GT3 operates as an I2C serial EEPROM. (1) Communication uses standard I2C protocol with SDA and SCL lines. Each transaction begins with a START condition, followed by a device address byte (1010 + A1A0 + R\/W), and then the 15-bit memory address for random access. Up to 4 devices can share the same I2C bus. (2) Read operations support current-address read (sequential), random read (with address set), and sequential read (continuous stream). The 1MHz clock rate supports fast data transfer. (3) Write operations support byte-write and 128-byte page-write modes. During page-write, up to 128 bytes can be written in a single operation with the internal address counter incrementing automatically within the page boundary. The write cycle time is 5ms maximum. The WP pin, when tied to VCC, protects the upper quadrant of memory from writes.","pin_description":" | Pin<\/th> | Name<\/th> | Description<\/th><\/tr> |
|---|
| 1<\/td> | A0<\/td> | I2C address select bit 0; connect to VCC or GND for address programming<\/td><\/tr> | | 2<\/td> | A1<\/td> | I2C address select bit 1; connect to VCC or GND for address programming<\/td><\/tr> | | 3<\/td> | A2<\/td> | I2C address select bit 2; connect to VCC or GND for address programming (up to 8 devices per bus)<\/td><\/tr> | | 4<\/td> | VSS<\/td> | Ground reference<\/td><\/tr> | | 5<\/td> | SDA<\/td> | I2C serial data; open-drain bidirectional; requires external pull-up resistor (1-10 kOhm)<\/td><\/tr> | | 6<\/td> | SCL<\/td> | I2C serial clock; open-drain input; supports 1 MHz Fast Mode Plus; requires pull-up resistor<\/td><\/tr> | | 7<\/td> | WP<\/td> | Write protect; connect to VCC to protect upper 128 bytes and configuration registers; connect to GND for normal operation<\/td><\/tr> | | 8<\/td> | VCC<\/td> | Power supply (1.7 V to 5.5 V); connect 0.1 uF decoupling capacitor to VSS<\/td><\/tr><\/table> Package: TSSOP-8 (WI). Memory: 256 Kbit (32 KB). Page size: 64 bytes. Endurance: 1,000,000 write cycles. Data retention: 200 years. I2C speed: up to 1 MHz (FM+).<\/p>","application_scenarios":" - Industrial Calibration Data:<\/strong> 256 Kbit capacity and 1 million cycle endurance for storing frequently updated calibration tables and compensation coefficients in process instruments<\/li>
- Automotive Configuration EEPROM:<\/strong> 200-year data retention for long-lifecycle vehicle configuration and feature enable\/disable flags in body and chassis ECUs<\/li>
- Medical Device Settings:<\/strong> Hardware write protection for patient-critical alarm thresholds and device serial numbers with 1.7 V low-voltage operation for battery-powered monitors<\/li>
- Network Equipment MAC Address:<\/strong> 1 MHz Fast Mode Plus I2C for rapid boot-time MAC address and board info retrieval in routers and switches with 8-device bus multiplexing<\/li>
- Smart Meter Event Logging:<\/strong> 32 KB storage capacity for tariff tables, billing records, and power quality event logs in smart electricity and gas meters<\/li><\/ul>","alternative_models":"
\n| Model<\/th> | Manufacturer<\/th> | Key Difference<\/th> | Package<\/th> | Density<\/th><\/tr>\n |
|---|
| CAT24C128WI-GT3<\/td> | onsemi<\/td> | 128Kbit lower-density version with same I2C interface, page write, and WP pin function<\/td> | TSSOP-8<\/td> | 128Kbit<\/td><\/tr>\n | | CAT24C512WI-GT3<\/td> | onsemi<\/td> | 512Kbit higher-density version for larger data storage with same pinout and 1MHz FM+ support<\/td> | TSSOP-8<\/td> | 512Kbit<\/td><\/tr>\n | | AT24C256C-SSHL-T<\/td> | Microchip<\/td> | 256Kbit equivalent in SOIC-8 with 1M cycle endurance and hardware write protection<\/td> | SOIC-8<\/td> | 256Kbit<\/td><\/tr>\n | | 24LC256-I\/SN<\/td> | Microchip<\/td> | 256Kbit 2.5V-5.5V version with 1MHz I2C and 64-byte page write in SOIC-8<\/td> | SOIC-8<\/td> | 256Kbit<\/td><\/tr>\n | | BR24G256FVT-WE2<\/td> | ROHM<\/td> | 256Kbit with 1.6V minimum supply and 3.4MHz High-Speed I2C mode in TSSOP-8<\/td> | TSSOP-8<\/td> | 256Kbit<\/td><\/tr>\n<\/table>\n The CAT24C256WI-GT3 is a 256Kbit (32KB) I2C EEPROM in TSSOP-8 with 1MHz Fast Mode Plus I2C, hardware write protection, and 1M cycle endurance. The CAT24CxxW family scales from 1Kbit to 1024Kbit in identical pinout. For SOIC-8 footprint, the AT24C256C provides equivalent functionality.<\/p>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/7635","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/comments?post=7635"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/7635\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/media?parent=7635"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/categories?post=7635"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/tags?post=7635"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=7635"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}} |
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