UC62LS4008 Datasheet, PDF (4/11 Pages) List of Unclassifed Manufacturers – Low Power CMOS SRAM 512K X 8 Bits

Low Power CMOS SRAM
512K X 8 Bits
UC62LS4008
-20/-25
AC TEST CONDITIONS
Input Pulse Levels
Input Rise and Fall Times
Input and Output Timing Reference Level
VCC/0V
1V/ns
0.5VCC
AC TEST LOADS AND WAVEFORMS
INCLUDING
JIG AND
SCOPE
3.3V
INCLUDING
JIG AND
SCOPE
3.3V
OUTPUT
OUTPUT
FIGURE 1A
FIGURE 1B
TERMINAL EQUIVALENT
667Ω
OUTPUT
1.73V
KEY TO SWITCHING WAVEFORMS
WAVEFORMS
INPUTS
OUTPUTS
MUST BE
STEADY
MUST BE
STEADY
MAY CHANGE
FROM H TO L
MAY CHANGE
FROM L TO H
DON’T CARE
ANY CHANGE
PERMITTED
DOES NOT
APPLY
WILL BE
CHANGE
FROM H TO L
WILL BE
CHANGE
FROM L TO H
CHANGE
STATE
UNKNOWN
CENTER LINE
IS HIGH
IMPEDANCE
OFF STATE
V_CC
GND
ALL INPUT PULSES
10%
90% 90%
10%
FIGURE 2 _1V/ns
1V/ns
AC ELECTRICAL CHARACTERISTICS (TA=0
READ CYCLE
JEDEC
PARAMETER
NAME
PARAMETER
NAME
t_AVAX
t_RC
DESCRIPTION
Read Cycle Time
t_AVQV
t_AA
Address Access Time
t_ELQV
t_CE
Chip Select Access Time
t_GLQV
t_OE
Output Enable to Output Valid
t_ELQX
t_CLZ
Chip Select to Output Low Z
t_GLQX
t_OLZ
Output Enable to Output Low Z
t_EHQZ
t_CHZ
Chip Deselect to Output in High Z
t_GHQZ
t_OHZ
Output Disable to Output in High Z
t_AXOX
t_OH
Address Chang to Output Change
to 70 , V_CC=3.0V~3.6V)
UC62LS4008-20
Min Typ Max
20 -
-
UC62LS4008-25
Min Typ Max
25
-
-
UNIT
ns
-
-
20
-
-
25
ns
-
-
20
-
-
25
ns
-
-
10
-
-
10
ns
5
-
-
5
-
-
ns
3
-
-
3
-
-
ns
0
-
10
0
-
10
ns
0
-
10
0
-
10
ns
5
-
-
5
-
-
ns
U-Chip Technology Corp. LTD. .
Reserves the right to modify document contents without notice.
Preliminary Rev.1.0
PAGE 4