25AA640A データシートの表示（PDF） - Microchip Technology
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25AA640A Datasheet PDF : 36 Pages
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25AA640A/25LC640A
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 = 1.8V to 5.5V
Param.
No.
Sym.
Characteristic
Min.
Max. Units
Test Conditions
1
FCLK Clock frequency
—
10
MHz 4.5V Vcc 5.5V
—
5
MHz 2.5V Vcc 4.5V
—
3
MHz 1.8V Vcc 2.5V
2
TCSS CS setup time
50
—
ns 4.5V Vcc 5.5V
100
—
ns 2.5V Vcc 4.5V
150
—
ns 1.8V Vcc 2.5V
3
TCSH CS hold time
100
—
ns 4.5V Vcc 5.5V
200
—
ns 2.5V Vcc 4.5V
250
—
ns 1.8V Vcc 2.5V
4
TCSD CS disable time
50
—
ns —
5
Tsu Data setup time
10
—
ns 4.5V Vcc 5.5V
20
—
ns 2.5V Vcc 4.5V
30
—
ns 1.8V Vcc 2.5V
6
THD Data hold time
20
—
ns 4.5V Vcc 5.5V
40
—
ns 2.5V Vcc 4.5V
50
—
ns 1.8V Vcc 2.5V
7
TR CLK rise time
—
100
ns (Note 1)
8
TF CLK fall time
—
100
ns (Note 1)
9
THI Clock high time
50
—
ns 4.5V Vcc 5.5V
100
—
ns 2.5V Vcc 4.5V
150
—
ns 1.8V Vcc 2.5V
10
TLO Clock low time
50
—
ns 4.5V Vcc 5.5V
100
—
ns 2.5V Vcc 4.5V
150
—
ns 1.8V Vcc 2.5V
11
TCLD Clock delay time
50
—
ns —
12
TCLE Clock enable time
50
—
ns —
13
TV Output valid from clock
—
50
ns 4.5V Vcc 5.5V
low
—
100
ns 2.5V Vcc 4.5V
—
160
ns 1.8V Vcc 2.5V
14
THO Output hold time
0
—
ns (Note 1)
15
TDIS Output disable time
—
40
ns 4.5V Vcc 5.5V (Note 1)
—
80
ns 2.5V Vcc 4.5V (Note 1)
—
160
ns 1.8V Vcc 2.5V (Note 1)
16
THS HOLD setup time
20
—
ns 4.5V Vcc 5.5V
40
—
ns 2.5V Vcc 4.5V
80
—
ns 1.8V Vcc 2.5V
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.
2003-2013 Microchip Technology Inc.
DS21830F-page 3
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