25XX080A/B
TABLE 1-2: AC CHARACTERISTICS (CONTINUED)
AC CHARACTERISTICS
Industrial (I): TAMB = -40°C to +85°C VCC = 1.8V to 5.5V
Automotive (E): TAMB = -40°C to +125°C VCC = 2.5V to 5.5V
Param.
No.
Sym.
Characteristic
Min.
Max. Units
Test Conditions
17
THH HOLD Hold Time
20
—
ns 4.5V ≤ VCC ≤ 5.5V
40
—
ns 2.5V ≤ VCC < 4.5V
80
—
ns 1.8V ≤ VCC < 2.5V
18
THZ HOLD Low to Output
High-Z
30
—
ns 4.5V ≤ VCC ≤ 5.5V (Note 1)
60
—
ns 2.5V ≤ VCC < 4.5V (Note 1)
160
—
ns 1.8V ≤ VCC < 2.5V (Note 1)
19
THV HOLD High to Output
Valid
30
—
ns 4.5V ≤ VCC ≤ 5.5V
60
—
ns 2.5V ≤ VCC < 4.5V
160
—
ns 1.8V ≤ VCC < 2.5V
20
TWC Internal Write Cycle Time
—
5
ms (Note 3)
21
— Endurance
1,000,000 —
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 our web site:
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.
TABLE 1-3: AC TEST CONDITIONS
AC Waveform:
VLO = 0.2V
—
VHI = VCC - 0.2V
(Note 1)
VHI = 4.0V
(Note 2)
Timing Measurement Reference Level
Input
0.5 VCC
Output
0.5 VCC
Note 1: For VCC ≤ 4.0V
2: For VCC > 4.0V
DS21808B-page 4
2003 Microchip Technology Inc.