25LC040A-I/P Microchip Technology, 25LC040A-I/P Datasheet - Page 12
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25LC040A-I/P
Manufacturer Part Number
25LC040A-I/P
Description
IC EEPROM 4KBIT 10MHZ 8DIP
Manufacturer
Microchip Technology
Specifications of 25LC040A-I/P
Memory Size
4K (512 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
512 X 8 / 256 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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
25LC040A-I/P
Manufacturer:
MICROCHIP
Quantity:
12 000
25AA040A/25LC040A
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:
DS21827F-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
1 (high)
1 (high)
0 (low)
(pin 3)
WP
Data Protection
WRITE-PROTECT FUNCTIONALITY MATRIX
(SR bit 1)
WEL
x
0
1
Protected Blocks
Protected
Protected
Protected
Unprotected Blocks
2.8
The 25XX040A 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
Protected
Protected
Writable
Power-On State
© 2009 Microchip Technology Inc.
STATUS Register
Protected
Protected
Writable