25LC640A Datasheet, PDF (3/24 Pages) Microchip Technology – 64K SPI Bus Serial EEPROM Extended (M) Operating Temperatures

25LC640A
TABLE 1-2: AC CHARACTERISTICS
AC CHARACTERISTICS
Extended (M): TA = -55°C to 125°C
VCC = 2.5V to 5.5V
Param.
No.
Sym.
Characteristic
Min.
Max. Units
Test Conditions
1
FCLK Clock frequency
2
TCSS CS setup time
3
TCSH CS hold time
4
TCSD CS disable time
5
Tsu Data setup time
6
THD Data hold time
—
10
MHz 4.5V ≤ Vcc ≤ 5.5V
—
5
MHz 2.5V ≤ Vcc < 4.5V
50
—
ns 4.5V ≤ Vcc ≤ 5.5V
100
—
ns 2.5V ≤ Vcc < 4.5V
100
—
ns 4.5V ≤ Vcc ≤ 5.5V
200
—
ns 2.5V ≤ Vcc < 4.5V
50
—
ns —
10
—
ns 4.5V ≤ Vcc ≤ 5.5V
20
—
ns 2.5V ≤ Vcc < 4.5V
20
—
ns 4.5V ≤ Vcc ≤ 5.5V
40
—
ns 2.5V ≤ Vcc < 4.5V
7
TR CLK rise time
—
8
TF CLK fall time
—
9
THI Clock high time
50
100
10
TLO Clock low time
50
100
11
TCLD Clock delay time
50
12
TCLE Clock enable time
50
13
TV Output valid from clock
—
low
—
14
THO Output hold time
0
15
TDIS Output disable time
—
—
16
THS HOLD setup time
20
40
17
THH HOLD hold time
20
40
18
THZ HOLD low to output
30
High-Z
60
19
THV HOLD high to output valid
30
60
100
ns (Note 1)
100
ns (Note 1)
—
ns 4.5V ≤ Vcc ≤ 5.5V
—
ns 2.5V ≤ Vcc < 4.5V
—
ns 4.5V ≤ Vcc ≤ 5.5V
—
ns 2.5V ≤ Vcc < 4.5V
—
ns —
—
ns —
50
ns 4.5V ≤ Vcc ≤ 5.5V
100
ns 2.5V ≤ Vcc < 4.5V
—
ns (Note 1)
40
ns 4.5V ≤ Vcc ≤ 5.5V(Note 1)
80
ns 2.5V ≤ Vcc ≤ 4.5V(Note 1)
—
ns 4.5V ≤ Vcc ≤ 5.5V
—
ns 2.5V ≤ Vcc < 4.5V
—
ns 4.5V ≤ Vcc ≤ 5.5V
—
ns 2.5V ≤ Vcc < 4.5V
—
ns 4.5V ≤ Vcc ≤ 5.5V(Note 1)
—
ns 2.5V ≤ Vcc < 4.5V(Note 1)
—
ns 4.5V ≤ Vcc ≤ 5.5V
—
ns 2.5V ≤ Vcc < 4.5V
20
TWC Internal write cycle time
—
5
ms (NOTE 3)
21
— Endurance
1M
—
E/W (NOTE 2)
Cycles
Note 1: This parameter is periodically sampled and not 100% tested.
2: This parameter is not tested but ensured 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.
3: TWC begins on the rising edge of CS after a valid write sequence and ends when the internal write cycle
is complete.
© 2009 Microchip Technology Inc.
DS22144A-page 3