25LC640AXT-E/ST Microchip Technology, 25LC640AXT-E/ST Datasheet - Page 7

• Manufacturer Part Number: 25LC640AXT-E/ST
• Description: 64K, 8K X 8, 2.5V SER EE EXT, ROTATED PINOUT 8 TSSOP 4.4mm T/R
• Manufacturer: Microchip Technology

Specifications of 25LC640AXT-E/ST

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 64K (8K x 8)
• Speed: 10MHz
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 2.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 8-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 25LC640AXT-E/STTR

BLOCK DIAGRAM
TABLE 2-1:
FIGURE 2-1:
© 2008 Microchip Technology Inc.
HOLD
Instruction Name
SCK
WP
SO
CS
SCK
SI
CS
SO
SI
WRITE
I/O Control
READ
WRDI
WREN
RDSR
WRSR
Register
STATUS
Logic
0
0
1
0
INSTRUCTION SET
READ SEQUENCE
V
V
0
CC
2
SS
Instruction
Memory
Control
Logic
3
0
Instruction Format
0000 0011
0000 0010
0000 0100
0000 0110
0000 0101
0000 0001
0
4
Dec
5
0
X
High-Impedance
6
1
Sense Amp.
R/W Control
Y Decoder
HV Generator
Page Latches
1
7
EEPROM
15 14 13 12
Array
8
9 10 11
Read data from memory array beginning at selected address
Write data to memory array beginning at selected address
Reset the write enable latch (disable write operations)
Set the write enable latch (enable write operations)
Read STATUS register
Write STATUS register
16-bit Address
25AA640A/25LC640A
2
21 22 23 24 25 26 27 28 29 30 31
1
0
Description
7
6
5
Data Out
4
3
DS21830D-page 7
2
1
0