25AA640 MICROCHIP [Microchip Technology], 25AA640 Datasheet - Page 3

• Manufacturer Part Number: 25AA640
• Description: 64K SPI Bus Serial EEPROM
• Manufacturer: MICROCHIP [Microchip Technology]

TABLE 1-3:
All parameters apply over the
specified operating ranges
unless otherwise noted.
Clock Frequency
CS Setup Time
CS Hold Time
CS Disable Time
Data Setup Time
Data Hold Time
CLK Rise Time
CLK Fall Time
Clock High Time
Clock Low Time
Clock Delay Time
Clock Enable Time
Output Valid from
Output Hold Time
Output Disable Time
HOLD Setup Time
HOLD Hold Time
HOLD Low to Output High-Z
HOLD High to Output Valid
Internal Write Cycle Time
Endurance
Note 1:
1997 Microchip Technology Inc.
Clock Low
2:
This parameter is not tested but guaranteed by characterization. For endurance estimates in a specific application, please
This parameter is periodically sampled and not 100% tested.
consult the Total Endurance Model which can be obtained on Microchip’s BBS or website.
Parameter
AC CHARACTERISTICS
Commercial (C):
Industrial (I):
Automotive (E):
Symbol
T
T
F
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
CSS
CSH
CSD
T
T
CLK
CLD
CLE
—
DIS
WC
HO
SU
HD
LO
HS
HH
HZ
HV
HI
R
F
V
25AA640/25LC640/25C640
Tamb = 0 C to +70 C
Tamb = -40 C to +85 C
Tamb = -40 C to +125 C
Preliminary
Min
100
250
500
150
250
475
500
100
100
150
250
475
150
250
475
100
100
200
100
100
200
100
150
200
100
150
200
1M
30
50
50
50
50
50
—
—
—
—
—
—
—
—
—
—
—
—
0
Max
150
250
475
200
250
500
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3
2
1
2
2
5
E/W Cycles
Units
V
V
V
MHz
MHz
MHz
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
CC
CC
CC
s
s
= 1.8V to 5.5V
= 1.8V to 5.5V
= 4.5V to 5.5V (25C640 only)
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
(Note 1)
(Note 1)
V
V
V
V
V
V
V
V
V
(Note 1)
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
(Note 2)
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
= 4.5V to 5.5V
= 2.5V to 4.5V
= 1.8V to 2.5V
= 4.5V to 5.5V
= 2.5V to 4.5V
= 1.8V to 2.5V
= 4.5V to 5.5V
= 2.5V to 4.5V
= 1.8V to 2.5V
= 4.5V to 5.5V
= 2.5V to 4.5V
= 1.8V to 2.5V
= 4.5V to 5.5V
= 2.5V to 4.5V
= 1.8V to 2.5V
= 4.5V to 5.5V
= 2.5V to 4.5V
= 1.8V to 2.5V
= 4.5V to 5.5V
= 2.5V to 4.5V
= 1.8V to 2.5V
= 4.5V to 5.5V
= 2.5V to 4.5V
= 1.8V to 2.5V
= 4.5V to 5.5V (Note 1)
= 2.5V to 4.5V (Note 1)
= 1.8V to 2.5V (Note 1)
= 4.5V to 5.5V
= 2.5V to 4.5V
= 1.8V to 2.5V
= 4.5V to 5.5V
= 2.5V to 4.5V
= 1.8V to 2.5V
= 4.5V to 5.5V (Note 1)
= 2.5V to 4.5V (Note 1)
= 1.8V to 2.5V (Note 1)
= 4.5V to 5.5V
= 2.5V to 4.5V
= 1.8V to 2.5V
Test Conditions
DS21223A-page 3