25LC080B-I/P Microchip Technology, 25LC080B-I/P Datasheet - Page 12
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25LC080B-I/P
Manufacturer Part Number
25LC080B-I/P
Description
IC EEPROM 8KBIT 10MHZ 8DIP
Manufacturer
Microchip Technology
Datasheet
1.25AA080B-ISN.pdf
(26 pages)
Specifications of 25LC080B-I/P
Memory Size
8K (1K x 8)
Format - Memory
EEPROMs - Serial
Memory Type
EEPROM
Speed
10MHz
Interface
SPI, 3-Wire Serial
Voltage - Supply
2.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-DIP (0.300", 7.62mm)
Memory Configuration
1K X 8 / 512 X 16
Ic Interface Type
SPI
Clock Frequency
10MHz
Supply Voltage Range
2.5V To 5.5V
Memory Case Style
DIP
No. Of Pins
8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
25XX080A/B
2.7
The following protection has been implemented to
prevent inadvertent writes to the array:
• The write enable latch is reset on power-up
• A write enable instruction must be issued to set
• After a byte write, page write or Status Register
• CS must be set high after the proper number of
• Access to the array during an internal write cycle
TABLE 2-4:
DS21808D-page 12
x = don’t care
the write enable latch
write, the write enable latch is reset
clock cycles to start an internal write cycle
is ignored and programming is continued
(SR bit 1)
WEL
0
1
1
1
Data Protection
WRITE-PROTECT FUNCTIONALITY MATRIX
(SR bit 7)
WPEN
x
0
1
1
1 (high)
0 (low)
(pin 3)
WP
x
x
Protected Blocks
Protected
Protected
Protected
Protected
2.8
The 25XX080A/B powers on in the following state:
• The device is in low-power Standby mode
• The write enable latch is reset
• SO is in high-impedance state
• A high-to-low-level transition on CS is required to
(CS = 1)
enter active state
Unprotected Blocks
Power-On State
Protected
Writable
Writable
Writable
© 2007 Microchip Technology Inc.
Status Register
Protected
Protected
Writable
Writable