25AA02E48-I/SN Microchip Technology, 25AA02E48-I/SN Datasheet - Page 11

• Manufacturer Part Number: 25AA02E48-I/SN
• Description: IC EEPROM 2KBIT 10MHZ 8SOIC
• Manufacturer: Microchip Technology

Specifications of 25AA02E48-I/SN

• Memory Size: 2K (256 x 8)
• Package / Case: 8-SOIC (3.9mm Width)
• Format - Memory: EEPROMs - Serial (with MAC Address)
• Memory Type: EEPROM
• Speed: 10MHz
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 1.8 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): 1.8 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, 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

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:
 2010 Microchip Technology Inc.
SCK
CS
SO
SI
Write Status Register Instruction
(WRSR)
0
0
0
WRITE STATUS REGISTER TIMING SEQUENCE (WRSR)
1
0
Instruction
2
0
3
0
4
0
5
High-Impedance
0
6
1
7
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
25AA02E48
13
2
Array Addresses
Write-Protected
(C0h-FFh)
(80h-FFh)
(00h-FFh)
14
upper 1/4
upper 1/2
1
DS22123B-page 11
none
all
15
0