CAT25256: 256-kb SPI Serial CMOS EEPROM Memory

The CAT25256 is a 256-kb Serial CMOS EEPROM device internally organized as 32kx8 bits. This features a 64-byte page write buffer and supports the Serial Peripheral Interface (SPI) protocol. The device is enabled through a Chip Select (CS) input. In addition, the required bus signals are clock input (SCK), data input (SI) and data output (SO) lines. The HOLD input may be used to pause any serial communication with the CAT25256 device. The device features software and hardware write protection, including partial as well as full array protection.On-Chip ECC (Error Correction Code) makes the device suitable for high reliability applications.Available for New Product (Rev. E).

Features
  • 20 MHz (5 V) SPI Compatible
  • 1.8 V to 5.5 V Supply Voltage Range
  • SPI Modes (0,0) & (1,1)
  • 64-byte Page Write Buffer
  • Additional Identification Page with Permanent Write Protection (New Product)
  • Self-timed Write Cycle
  • Hardware and Software Protection
  • 100 Year Data Retention
  • 1,000,000 Program/Erase Cycles
  • Low Power CMOS Technology
  • Block Write Protection- Protect 1/4, 1/2 or Entire EEPROM Array
  • Industrial and Extended Temperature Range
  • 8-lead PDIP, SOIC, TSSOP and 8-pad UDFN and TDFN Packages
  • This Device is Pb-Free, Halogen Free/BFR Free, and RoHS Compliant
Applications
  • Automotive Systems
  • Communications Systems
  • Computer Systems
  • Consumer Systems
  • Industrial Systems
Software (2)
Document TitleDocument ID/SizeRevisionRevision Date
EASYPRO1GEVB Software OS x64 (Version 3.2.8)EASYPRO1GEVB_SOFTWARE.X64.ZIP (7134.0kB)3.2.8
EASYPRO1GEVB Software OS x86 (Version 3.2.8)EASYPRO1GEVB_SOFTWARE.X86.ZIP (7030.0kB)3.2.8
Package Drawings (5)
Document TitleDocument ID/SizeRevision
PDIP-8, 300 mils646AA (55.8kB)A
SOIC 8, 150 mils751BD (55.6kB)revo
SOIC-8, 208 mils751BE (55.9kB)revo
TSSOP8, 4.4x3948AL (55.7kB)revo
UDFN8, 2x3, 0.5P, Extended Pad517AZ (34.7kB)A
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
256-kb SPI Serial CMOS EEPROMCAT25256/D (145kB)8
Evaluation Board Documents (1)
Document TitleDocument ID/SizeRevisionRevision Date
EASYPRO1GEVB Evaluation Board User's ManualEVBUM2027/D (1061.0kB)3
Evaluation/Development Tool Information
ProductStatusComplianceShort Description
EASYPRO1GEVBActiveSerial EEPROM Evaluation Board
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
CAT25256HU4I-GT3ActivePb-free Halide freeUDFN-8517AZ1Tape and Reel3000$0.876
CAT25256LI-GActive, Not RecPb-free Halide freePDIP-8646AANATube50$0.4933
CAT25256VE-GT3ActivePb-free Halide freeSOIC-8751BD1Tape and Reel3000$0.6221
CAT25256VI-GActivePb-free Halide freeSOIC-8751BD1Tube100$0.6221
CAT25256VI-GT3ActivePb-free Halide freeSOIC-8751BD1Tape and Reel3000$0.4667
CAT25256XE-T2ActivePb-free Halide freeSOIC-8751BE3Tape and Reel2000$0.6753
CAT25256XI-T2ActivePb-free Halide freeSOIC-8751BE3Tape and Reel2000$0.4627
CAT25256YI-GActivePb-free Halide freeTSSOP-8948AL1Tube100$0.6221
CAT25256YI-GT3ActivePb-free Halide freeTSSOP-8948AL1Tape and Reel3000$0.4667
Specifications
ProductTypeDensityOrganizationData Transmission Standardfcycle Max (kHz)tACC Max nsVCC Min (V)VCC Max (V)Istandby Max (µA)Iact Max (mA)T Min (°C)T Max (°C)
CAT25256HU4I-GT3Serial256 kb32k x 8SPI10000401.85.532-40125
CAT25256VE-GT3Serial256 kb32k x 8SPI10000401.85.552-40125
CAT25256VI-GSerial256 kb32k x 8SPI10000401.85.532-4085
CAT25256VI-GT3Serial256 kb32k x 8SPI10000401.85.522-4085
CAT25256XE-T2Serial256 kb32k x 8SPI10000401.85.532-40125
CAT25256XI-T2Serial256 kb32k x 8SPI10000401.85.522-4085
CAT25256YI-GSerial256 kb32k x 8SPI10000401.85.532-4085
CAT25256YI-GT3Serial256 kb32k x 8SPI10000401.85.522-4085
256-kb SPI Serial CMOS EEPROM (145kB) CAT25256
EASYPRO1GEVB SOFTWARE EASYPRO1GEVB
EASYPRO1GEVB SOFTWARE EASYPRO1GEVB
EVBUM2027/D - 1061 EASYPRO1GEVB
UDFN8, 2x3, 0.5P, Extended Pad CAT93C86B
PDIP-8, 300 mils CAT93C86B
SOIC 8, 150 mils CAV93C86
SOIC-8, 208 mils CAT93C86B
TSSOP8, 4.4x3 PCA9306
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