Datasheet

©2011 Silicon Storage Technology, Inc. DS25078A 11/11
23
2 Mbit SPI Serial Flash
SST25VF020
Not Recommended for New Designs
A
Microchip Technology Company
Figure 20:AC Input/Output Reference Waveforms
Figure 21:A Test Load Example
1231 F19.1
REFERENCE POINTS OUTPUTINPUT
V
HT
V
LT
V
HT
V
LT
V
IHT
V
ILT
AC test inputs are driven at V
IHT
(0.9V
DD
) for a logic “1” and V
ILT
(0.1V
DD
) for a logic “0”. Measure-
ment reference points for inputs and outputs are V
HT
(0.7V
DD
) and V
LT
(0.3V
DD
). Input rise and fall
times (10%  90%) are <5 ns.
Note: V
HT
-V
HIGH
Test
V
LT
-V
LOW
Test
V
IHT
-V
INPUT
HIGH Test
V
ILT
-V
INPUT
LOW Test
1231 F20.0
TO TESTER
TO DUT
C
L