Datasheet

©2013 Silicon Storage Technology, Inc. DS20005054C 04/13
31
2 Mbit SPI Serial Flash
SST25VF020B
Data Sheet
Figure 29:AC Input/Output Reference Waveforms
Figure 30:A Test Load Example
1417 IORef.0
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
(0.6V
DD
) and V
LT
(0.4V
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
Tes t
1417 TstLd.0
TO TESTER
TO DUT
C
L