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CAT25C64U20SITE13 Datasheet(PDF) 1 Page - Catalyst Semiconductor |
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CAT25C64U20SITE13 Datasheet(HTML) 1 Page - Catalyst Semiconductor |
1 / 11 page CAT25C32/64 32K/64K-Bit SPI Serial CMOS EEPROM FEATURES s 10 MHz SPI compatible s 1.8 to 6.0 volt operation s Hardware and software protection s Low power CMOS technology s SPI modes (0,0 &1,1) s Commercial, industrial and automotive temperature ranges s 1,000,000 program/erase cycles s 100 year data tetention s Self-timed write cycle s 8-pin DIP/SOIC, 14-pin TSSOP and 20-pin TSSOP s 64-Byte page write buffer s Block write protection – Protect 1/4, 1/2 or all of EEPROM array PIN CONFIGURATION BLOCK DIAGRAM © 2004 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice DESCRIPTION The CAT25C32/64 is a 32K/64K-Bit SPI Serial CMOS EEPROM internally organized as 4Kx8/8Kx8 bits. Catalyst’s advanced CMOS Technology substantially reduces device power requirements. The CAT25C32/ 64 features a 64-byte page write buffer. The device operates via the SPI bus serial interface and is enabled though a Chip Select ( CS). In addition to the Chip Select, the clock input (SCK), data in (SI) and data out (SO) are required to access the device. The HOLD pin may be used to suspend any serial communication without resetting the serial sequence. The CAT25C32/64 is designed with software and hardware write protection features including Block write protection. The device is available in 8-pin DIP, 8-pin SOIC, 14-pin TSSOP and 20-pin TSSOP packages. Doc No. 1001, Rev. G DIP Package (P, L) TSSOP Package (U20, Y20) SOIC Package (S, V) SENSE AMPS SHIFT REGISTERS SPI CONTROL LOGIC WORD ADDRESS BUFFERS I/O CONTROL E2PROM ARRAY COLUMN DECODERS XDEC HIGH VOLTAGE/ TIMING CONTROL SO STATUS REGISTER BLOCK PROTECT LOGIC DATA IN STORAGE SI CS WP HOLD SCK SO WP CS VCC HOLD SCK SI 1 2 3 4 8 7 6 5 VSS VSS SO WP VCC HOLD SCK SI 1 2 3 4 8 7 6 5 CS TSSOP Package (U14, Y14) CS WP HOLD VCC NC NC NC NC SO NC NC VSS SCK SI 1 2 3 4 5 6 7 8 9 10 11 12 13 14 NC NC CS WP HOLD HOLD VCC NC NC NC NC NC NC SO NC NC SO VSS SCK SI 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 PIN FUNCTIONS Pin Name Function SO Serial Data Output SCK Serial Clock WP Write Protect VCC +1.8V to +6.0V Power Supply VSS Ground CS Chip Select SI Serial Data Input HOLD Suspends Serial Input NC No Connect ALO GEN FR TM LEAD FREE (Not recommended for new design, replace with CAT25320) |
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