Datasheet

©2011 Silicon Storage Technology, Inc. DS25085A 10/11
35
8 Mbit Firmware Hub
SST49LF008A
Data Sheet
A
Microchip Technology Company
Figure 22:Software ID Exit and Reset (PP Mode)
Figure 23:AC Input/Output Reference Waveforms (PP Mode)
Figure 24:A Test Load Example (PP Mode)
1161 F25.0
Addresses
DQ
7-0
T
IDA
T
WP
T
WPH
WE#
SW0 SW1 SW2
5555
2AAA 5555
Three-Byte Sequence for
Software ID Exit and Reset
OE#
R/C#
AA 55 F0
1161 F26.0
REFERENCE POINTS OUTPUTINPUT
V
IT
V
IHT
V
ILT
V
OT
AC test inputs are driven at V
IHT
(0.9 V
DD
) for a logic “1” and V
ILT
(0.1 V
DD
) for a logic “0”. Mea-
surement reference points for inputs and outputs are V
IT
(0.5 V
DD
) and V
OT
(0.5 V
DD
). Input rise
and fall times (10%  90%) are <5 ns.
Note: V
IT
-V
INPUT
Test
V
OT
-V
OUTPUT
Test
V
IHT
-V
INPUT
HIGH Test
V
ILT
-V
INPUT
LOW Test
1161 F27.0
TO TESTER
TO DUT
C
L