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25AA02E48 Datasheet(PDF) 6 Page - Microchip Technology |
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25AA02E48 Datasheet(HTML) 6 Page - Microchip Technology |
6 / 20 page 25AA02E48 DS22123A-page 6 Preliminary © 2008 Microchip Technology Inc. 2.0 FUNCTIONAL DESCRIPTION 2.1 Principles of Operation The 25AA02E48 is a 256-byte Serial EEPROM designed to interface directly with the Serial Peripheral Interface (SPI) port of many of today’s popular microcontroller families, including Microchip’s PIC® microcontrollers. It may also interface with microcon- trollers that do not have a built-in SPI port by using discrete I/O lines programmed properly in software to match the SPI protocol. BLOCK DIAGRAM Note: This data sheet documents only the device’s features and specifications that are in addition to the features and specifi- cations of the 25AA020A device. For infor- mation on the features and specifications shared by the 25AA02E48 and 25AA020A devices, see the “25AA020A Data Sheet” (DS21833). SI SO SCK CS HOLD WP STATUS Register I/O Control Memory Control Logic X Dec HV Generator EEPROM Array Page Latches Y Decoder Sense Amp. R/W Control Logic VCC VSS |
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