25LC040-I/SN Microchip Technology, 25LC040-I/SN Datasheet - Page 9
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25LC040-I/SN
Manufacturer Part Number
25LC040-I/SN
Description
IC EEPROM 4KBIT 2MHZ 8SOIC
Manufacturer
Microchip Technology
Datasheet
1.25LC040SN.pdf
(22 pages)
Specifications of 25LC040-I/SN
Memory Size
4K (512 x 8)
Package / Case
8-SOIC (3.9mm Width)
Operating Temperature
-40°C ~ 85°C
Format - Memory
EEPROMs - Serial
Memory Type
EEPROM
Speed
2MHz
Interface
SPI, 3-Wire Serial
Voltage - Supply
2.5 V ~ 5.5 V
Organization
512 x 8
Interface Type
SPI
Maximum Clock Frequency
2 MHz
Access Time
230 ns
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.5 V
Maximum Operating Current
5 mA
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Operating Supply Voltage
2.5 V
Package
8SOIC N
Density
4 Kb
Maximum Operating Frequency
2 MHz
Maximum Random Access Time
230 ns
Typical Operating Supply Voltage
3.3|5 V
Data Retention
200(Min) Year
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
25LC040-I/SN
Manufacturer:
MCP
Quantity:
27 464
Company:
Part Number:
25LC040-I/SN
Manufacturer:
MICROCHI
Quantity:
100
Part Number:
25LC040-I/SN
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
3.4
The 25XX040 contains a write enable latch.
Table 3-3 for the Write-Protect Functionality Matrix.
This latch must be set before any write operation will be
completed internally. The WREN instruction will set the
latch, and the WRDI will reset the latch.
FIGURE 3-4:
FIGURE 3-5:
© 2006 Microchip Technology Inc.
Write Enable (WREN) and Write
Disable (WRDI)
WRITE ENABLE SEQUENCE
WRITE DISABLE SEQUENCE
SCK
SCK
CS
CS
SO
SO
SI
SI
0
0
0
0
25AA040/25LC040/25C040
0
0
See
1
1
High-impedance
High-impedance
0
0
2
2
0
0
3
3
The following is a list of conditions under which the
write enable latch will be reset:
• Power-up
• WRDI instruction successfully executed
• WRSR instruction successfully executed
• WRITE instruction successfully executed
• WP line is low
0
0
4
4
1
1
5
5
1
1 0
6
6
0
0
7
7
DS21204E-page 9