25LC512-E/SN Microchip Technology, 25LC512-E/SN Datasheet - Page 7

• Manufacturer Part Number: 25LC512-E/SN
• Description: IC EEPROM 512KBIT 20MHZ 8SOIC
• Manufacturer: Microchip Technology

Specifications of 25LC512-E/SN

• Memory Size: 512K (64K x 8)
• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Speed: 20MHz
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 2.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 8-SOIC (3.9mm Width)
• Memory Configuration: 64K X 8
• Ic Interface Type: Serial, SPI
• Clock Frequency: 20MHz
• Access Time: 25ns
• Supply Voltage Range: 2.5V To 5.5V
• Memory Case Style: SOIC
• No. Of Pins: 8
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Read Sequence
The device is selected by pulling CS low. The 8-bit
READ instruction is transmitted to the 25LC512 fol-
lowed by the 16-bit address. After the correct READ
instruction and address are sent, the data stored in the
memory at the selected address is shifted out on the
SO pin. The data stored in the memory at the next
address can be read sequentially by continuing to
FIGURE 2-1:
 2010 Microchip Technology Inc.
SCK
SO
CS
SI
0
0
0
1
0
Instruction
2
READ SEQUENCE
0
3
0
4
0
5
High-Impedance
1
6
1
7
15 14 13 12
8
9 10 11
16-bit Address
provide clock pulses. The internal Address Pointer is
automatically incremented to the next higher address
after each byte of data is shifted out. When the highest
address is reached (FFFFh), the address counter rolls
over to address 0000h allowing the read cycle to be
continued
terminated by raising the CS pin (Figure 2-1).
21 22 23 24 25 26 27 28 29 30 31
2
1
indefinitely.
0
7
6
5
The
Data Out
4
25LC512
READ
3
2
DS22065C-page 7
instruction
1
0
is