25LC020A-I/SN Microchip Technology, 25LC020A-I/SN Datasheet - Page 11
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25LC020A-I/SN
Manufacturer Part Number
25LC020A-I/SN
Description
IC EEPROM 2KBIT 10MHZ 8SOIC
Manufacturer
Microchip Technology
Specifications of 25LC020A-I/SN
Memory Size
2K (256 x 8)
Package / Case
8-SOIC (3.9mm Width)
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
Organization
256 K x 8
Interface Type
SPI
Maximum Clock Frequency
10 MHz
Access Time
50 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
3.3 V, 5 V
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:
25LC020A-I/SN
Manufacturer:
MCP
Quantity:
3 800
Company:
Part Number:
25LC020A-I/SN
Manufacturer:
MICROCHIP
Quantity:
12 000
Part Number:
25LC020A-I/SN
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
2.6
The Write Status Register instruction (WRSR) allows
the user to write to the nonvolatile bits in the STATUS
register as shown in Table 2-2. See Figure 2-7 for the
WRSR timing sequence. Four levels of protection for
the array are selectable by writing to the appropriate
bits in the STATUS register. The user has the ability to
write-protect none, one, two, or all four of the
segments of the array as shown in Table 2-3.
FIGURE 2-7:
© 2007 Microchip Technology Inc.
SCK
Note:
CS
SO
SI
Write Status Register Instruction
(WRSR)
An internal write cycle (T
sequence.
0
0
0
WRITE STATUS REGISTER TIMING SEQUENCE (WRSR)
1
0
Instruction
2
0
3
WC
0
) is initiated on the rising edge of CS after a valid write STATUS register
4
0
5
High-Impedance
Preliminary
0
6
1
7
25AA020A/25LC020A
TABLE 2-3:
7
8
BP1
0
0
1
1
6
9
Data to STATUS register
10
5
11
4
ARRAY PROTECTION
BP0
0
1
0
1
12
3
13
2
Array Addresses
Write-Protected
(C0h-FFh)
(80h-FFh)
(00h-FFh)
14
upper 1/4
upper 1/2
1
DS21833D-page 11
none
all
15
0