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FM24C256FEYYX 데이터시트(PDF) 1 Page - Fairchild Semiconductor |
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FM24C256FEYYX 데이터시트(HTML) 1 Page - Fairchild Semiconductor |
1 / 12 page 1 www.fairchildsemi.com FM24C256 rev. B.3 June 2000 © 2000 Fairchild Semiconductor International FM24C256 256 KBit 2-Wire Bus Interface Serial EEPROM with Write Protect General Description The FM24C256/C256L/C256LZ devices are 256 Kbits CMOS nonvolatile electrically erasable memory. These devices offer the designer different low voltage and low power options. They conform to all requirements in the Extended IIC 2-wire protocol. Furthermore, they are designed to minimize device pin count and simplify PC board layout requirements. The entire memory array can be write disabled (Write Protection) by connecting the WP pin to V CC. Functional address lines allow up to eight devices on the same bus, for up to a total of 2 Mbit address space. The IIC communication protocol uses CLOCK (SCL) and DATA I/O (SDA) lines to synchronously clock data between the master (for example a microprocessor) and the slave EEPROM device(s). Fairchild EEPROMs are designed and tested for applications requiring high endurance, high reliability, and low power con- sumption. Block Diagram Features I Extended Operating Voltages — C256: 4.5V - 5.5V — C256L: 2.7V - 5.5V — C256LZ: 2.7V - 5.5V I Low Power CMOS — 1mA active current typical — C256/C256L: 10 µA standby current typical — C256LZ: less than 1 µA standby current I 2-wire IIC serial interface I 64 byte page write mode I Max write cycle time of 6ms byte/page I 40 years data retention I Endurance: 100,000 data changes I Hardware write protect for entire array I Schmitt trigger inputs for noise suppression I Electrostatic discharge protection > 4000V I 8-pin DIP and 8-pin SO (150 mil) packages. Contact factory for CSP package availability DS800023-1 H.V. GENERATION TIMING &CONTROL E2PROM ARRAY YDEC DATA REGISTER XDEC CONTROL LOGIC WORD ADDRESS COUNTER SLAVE ADDRESS REGISTER & COMPARATOR START STOP LOGIC WRITE LOCKOUT START CYCLE CK DIN R/W LOAD INC SDA SCL WP VCC DOUT A2 A1 A0 |
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