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AT28C64

製品説明
仕様・特性

Features • Fast Read Access Time – 150 ns • Automatic Page Write Operation – Internal Address and Data Latches for 64 Bytes • Fast Write Cycle Times • • • • • • • • • – Page Write Cycle Time: 10 ms Maximum (Standard) 2 ms Maximum (Option) – 1 to 64-byte Page Write Operation Low Power Dissipation – 40 mA Active Current – 100 µA CMOS Standby Current Hardware and Software Data Protection DATA Polling and Toggle Bit for End of Write Detection High Reliability CMOS Technology – Endurance: 100,000 Cycles – Data Retention: 10 Years Single 5V ±10% Supply CMOS and TTL Compatible Inputs and Outputs JEDEC Approved Byte-wide Pinout Commercial and Industrial Temperature Ranges Green (Pb/Halide-free) Packaging Option 1. Description 64K (8K x 8) Parallel EEPROM with Page Write and Software Data Protection AT28C64B The AT28C64B is a high-performance electrically-erasable and programmable readonly memory (EEPROM). Its 64K of memory is organized as 8,192 words by 8 bits. Manufactured with Atmel’s advanced nonvolatile CMOS technology, the device offers access times to 150 ns with power dissipation of just 220 mW. When the device is deselected, the CMOS standby current is less than 100 µA. The AT28C64B is accessed like a Static RAM for the read or write cycle without the need for external components. The device contains a 64-byte page register to allow writing of up to 64 bytes simultaneously. During a write cycle, the addresses and 1 to 64 bytes of data are internally latched, freeing the address and data bus for other operations. Following the initiation of a write cycle, the device will automatically write the latched data using an internal control timer. The end of a write cycle can be detected by DATA POLLING of I/O7. Once the end of a write cycle has been detected, a new access for a read or write can begin. Atmel’s AT28C64B has additional features to ensure high quality and manufacturability. The device utilizes internal error correction for extended endurance and improved data retention characteristics. An optional software data protection mechanism is available to guard against inadvertent writes. The device also includes an extra 64 bytes of EEPROM for device identification or tracking. 0270J–PEEPR–04/05

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AT28C1625SC AT28C16E AT28C16E-12PC AT28C16E-12PI AT28C16E-15DC
AT28C16E-15DI AT28C16E-15DM AT28C16E-15DM883 AT28C16E-15DM883C AT28C16E-15JC
AT28C16E-15JE AT28C16E-15JI AT28C16E-15JU AT28C16E15LC AT28C16E-15PC
AT28C16E-15PI AT28C16E-15SC AT28C16E-15SCSO24 AT28C16E-15SI AT28C16E-15TC
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AT28C16E-20TI AT28C16E-25DC AT28C16E25DM8 AT28C16E-25DM883 AT28C16E-25DM883C
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AT28C256-15D AT28C256-15DC AT28C256-15DI AT28C256-15DM AT28C256-15DM883
AT28C256-15DM8833 AT28C256-15DM883B AT28C256-15DM883C AT28C256-15DM883C-PULLS AT28C256-15DM883-X
AT28C256-15DMB AT28C256-15DMB883 AT28C256-15F1 AT28C256-15FM AT28C256-15FM8
AT28C256-15FM883 AT28C256-15FM883,5962-88 AT28C256-15FM883A AT28C256-15FM883C AT28C256-15JC
AT28C256-15JC20JC25JC AT28C256-15JC675EA AT28C256-15JCJIPLCC AT28C256-15JCPLCC32 AT28C256-15JD
AT28C256-15JI AT28C25615JIPLCC44 AT28C256-15JIU AT28C256-15JU AT28C256-15JU-QM5326
AT28C256-15JU-S AT28C256-15JUSL043 AT28C256-15JUSL383 AT28C256-15JUTR AT28C256-15LC
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AT28C256-15P AT28C256-15PC AT28C256-15PC203 AT28C256-15PC2030 AT28C256-15PI
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AT28C256-15TI AT28C256-15TU AT28C256-15TUSL383 AT28C25615UC AT28C256-15UI
AT28C256-15UM AT28C256-15UM883 AT28C256-15UM883B AT28C256-15UM883C AT28C256-200DM883
AT28C256-20DC AT28C256-20DI AT28C256-20DM AT28C256-20DM883 AT28C256-20DM883B
AT28C256-20DM883C AT28C256-20DMB883 AT28C256-20FM883 AT28C256-20FM883C AT28C256-20J10-9
AT28C256-20JC AT28C256-20JCPROG AT28C256-20JI AT28C256-20JI-SL33 AT28C256-20JL
AT28C256-20LC AT28C256-20LI AT28C256-20LM AT28C256-20LM883 AT28C256-20LM8835962-8
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