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25AA02E48 Datasheet(PDF) 6 Page - Microchip Technology

Part # 25AA02E48
Description  2K SPI Bus Serial EEPROM with EUI-48??Node Identity
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

25AA02E48 Datasheet(HTML) 6 Page - Microchip Technology

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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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