25LC640-ISN Datasheet, PDF (3/24 Pages) Microchip Technology – 64K SPI Bus Serial EEPROM

25AA640/25LC640
TABLE 1-2: AC CHARACTERISTICS
AC CHARACTERISTICS
Industrial (I): TA = -40°C to +85°C
Automotive (E): TA = -40°C to +125°C
VCC = 1.8V to 5.5V
VCC = 4.5V to 5.5V
Param.
No.
Sym
Characteristic
Min
Max
Units
Conditions
1
FCLK
Clock Frequency
—
3
MHz VCC = 4.5V to 5.5V (Note 2)
—
2
MHz VCC = 2.5V to 5.5V
—
1
MHz VCC = 1.8V to 5.5V
2
TCSS
CS Setup Time
100
—
ns VCC = 4.5V to 5.5V
250
—
ns VCC = 2.5V to 5.5V
500
—
ns VCC = 1.8V to 5.5V
3
TCSH
CS Hold Time
150
—
ns VCC = 4.5V to 5.5V
250
—
ns VCC = 2.5V to 5.5V
475
—
ns VCC = 1.8V to 5.5V
4
TCSD
CS Disable Time
500
—
ns
5
TSU
Data Setup Time
30
—
ns VCC = 4.5V to 5.5V
50
—
ns VCC = 2.5V to 5.5V
50
—
ns VCC = 1.8V to 5.5V
6
THD
Data Hold Time
50
—
ns VCC = 4.5V to 5.5V
100
—
ns VCC = 2.5V to 5.5V
100
—
ns VCC = 1.8V to 5.5V
7
TR
CLK Rise Time
—
2
μs (Note 1)
8
TF
CLK Fall Time
—
2
μs (Note 1)
9
THI
Clock High Time
150
—
ns VCC = 4.5V to 5.5V
230
—
ns VCC = 2.5V to 5.5V
475
—
ns VCC = 1.8V to 5.5V
10
TLO
Clock Low Time
150
—
ns VCC = 4.5V to 5.5V
230
—
ns VCC = 2.5V to 5.5V
475
—
ns VCC = 1.8V to 5.5V
11
TCLD
Clock Delay Time
50
—
ns
12
TCLE
Clock Enable Time
50
—
ns
13
TV
Output Valid from
Clock Low
—
150
ns VCC = 4.5V to 5.5V
—
230
ns VCC = 2.5V to 5.5V
—
475
ns VCC = 1.8V to 5.5V
14
THO
Output Hold Time
0
—
ns (Note 1)
15
TDIS
Output Disable Time
—
—
—
200
ns VCC = 4.5V to 5.5V (Note 1)
250
ns VCC = 2.5V to 5.5V (Note 1)
500
ns VCC = 1.8V to 5.5V (Note 1)
16
THS
HOLD Setup Time
100
—
ns VCC = 4.5V to 5.5V
100
—
ns VCC = 2.5V to 5.5V
200
—
ns VCC = 1.8V to 5.5V
17
THH
HOLD Hold Time
100
—
ns VCC = 4.5V to 5.5V
100
—
ns VCC = 2.5V to 5.5V
200
—
ns VCC = 1.8V to 5.5V
18
THZ
HOLD Low to Output
100
High-Z
150
200
—
ns VCC = 4.5V to 5.5V (Note 1)
—
ns VCC = 2.5V to 5.5V (Note 1)
—
ns VCC = 1.8V to 5.5V (Note 1)
19
THV
HOLD High to Output
100
Valid
150
200
—
ns VCC = 4.5V to 5.5V
—
ns VCC = 2.5V to 5.5V
—
ns VCC = 1.8V to 5.5V
20
TWC
Internal Write Cycle
—
Time
5
ms
21
—
Endurance
1M
—
E/W (Note 3)
Cycles
Note
1: This parameter is periodically sampled and not 100% tested.
2: FCLK max. = 2.5 MHz for TA > 85°C.
3: This parameter is not tested but established by characterization. For endurance estimates in a specific application,
please consult the Total Endurance™ Model which can be obtained from Microchip’s web site at: www.microchip.com.
© 2008 Microchip Technology Inc.
DS21223H-page 3