25AA02E48-I/OT MICROCHIP [Microchip Technology], 25AA02E48-I/OT Datasheet - Page 6

• Manufacturer Part Number: 25AA02E48-I/OT
• Manufacturer: MICROCHIP [Microchip Technology]

25AA02E48
2.0
2.1
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
DS22123A-page 6
HOLD
Note:
SCK
WP
SO
CS
SI
I/O Control
FUNCTIONAL DESCRIPTION
Principles of Operation
STATUS
Register
Logic
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).
V
V
CC
SS
Memory
Control
Logic
Dec
X
Sense Amp.
R/W Control
Y Decoder
HV Generator
Page Latches
EEPROM
Array
Preliminary
®
© 2008 Microchip Technology Inc.