25AA128/25LC128
TABLE 1-2:
AC CHARACTERISTICS
Industrial (I):
Automotive (E): TA = -40°C to +125°C
TA = -40°C to +85°C
VCC = 1.8V to 5.5V
VCC = 2.5V to 5.5V
AC CHARACTERISTICS
Param.
Sym.
Characteristic
Min.
Max.
Units
Test Conditions
No.
1
2
3
FCLK Clock Frequency
—
—
—
10
5
3
MHz 4.5V ≤ Vcc ≤ 5.5V
MHz 2.5V ≤ Vcc < 4.5V
MHz 1.8V ≤ Vcc < 2.5V
TCSS CS Setup Time
TCSH CS Hold Time
TCSD CS Disable Time
50
100
150
—
—
—
ns
ns
ns
4.5V ≤ Vcc ≤ 5.5V
2.5V ≤ Vcc < 4.5V
1.8V ≤ Vcc < 2.5V
100
200
250
—
—
—
ns
ns
ns
4.5V ≤ Vcc ≤ 5.5V
2.5V ≤ Vcc < 4.5V
1.8V ≤ Vcc < 2.5V
4
5
50
—
ns
—
Tsu
Data Setup Time
10
20
30
—
—
—
ns
ns
ns
4.5V ≤ Vcc ≤ 5.5V
2.5V ≤ Vcc < 4.5V
1.8V ≤ Vcc < 2.5V
6
THD
Data Hold Time
20
40
50
—
—
—
ns
ns
ns
4.5V ≤ Vcc ≤ 5.5V
2.5V ≤ Vcc < 4.5V
1.8V ≤ Vcc < 2.5V
7
8
9
TR
TF
CLK Rise Time
CLK Fall Time
Clock High Time
—
—
100
100
ns
ns
(Note 1)
(Note 1)
THI
50
100
150
—
—
—
ns
ns
ns
4.5V ≤ Vcc ≤ 5.5V
2.5V ≤ Vcc < 4.5V
1.8V ≤ Vcc < 2.5V
10
TLO
Clock Low Time
50
100
150
—
—
—
ns
ns
ns
4.5V ≤ Vcc ≤ 5.5V
2.5V ≤ Vcc < 4.5V
1.8V ≤ Vcc < 2.5V
11
12
13
TCLD Clock Delay Time
50
50
—
—
ns
ns
—
—
TCLE
TV
Clock Enable Time
Output Valid from Clock
Low
—
—
—
50
100
160
ns
ns
ns
4.5V ≤ Vcc ≤ 5.5V
2.5V ≤ Vcc < 4.5V
1.8V ≤ Vcc < 2.5V
14
15
THO
TDIS
Output Hold Time
0
—
ns
(Note 1)
Output Disable Time
—
—
—
40
80
160
ns
ns
ns
4.5V ≤ Vcc ≤ 5.5V(Note 1)
2.5V ≤ Vcc ≤ 4.5V(Note 1)
1.8V ≤ Vcc ≤ 2.5V(Note 1)
16
THS
HOLD Setup Time
20
40
80
—
—
—
ns
ns
ns
4.5V ≤ Vcc ≤ 5.5V
2.5V ≤ Vcc < 4.5V
1.8V ≤ Vcc < 2.5V
Note 1: This parameter is periodically sampled and not 100% tested.
2: TWC begins on the rising edge of CS after a valid write sequence and ends when the internal write cycle is
complete.
3: 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 our web site:
www.microchip.com.
© 2007 Microchip Technology Inc.
DS21831C-page 3