STC62WV25616 STC, STC62WV25616 Datasheet - Page 5

• Manufacturer Part Number: STC62WV25616
• Description: Very Low Power/Voltage CMOS SRAM 256K X 16 bit
• Manufacturer: STC

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www.DataSheet4U.com
R0201-STC62WV25616
NOTE :
AC TEST CONDITIONS
PARAMETER
(Test Load and Input/Output Reference)
1. t
Input Pulse Levels
Input Rise and Fall Times
Input and Output
Timing Reference Level
Output Load
AC ELECTRICAL CHARACTERISTICS
READ CYCLE
JEDEC
BA
NAME
t
t
t
t
t
t
t
t
t
t
t
t
ELQV
BA
GLQV
E1LQX
BE
GLQX
EHQZ
BDO
GHQZ
AVAX
AVQV
AXOX
is 35ns/30ns (@speed=70ns/55ns) with address toggle. ; t
STC
PARAMETER
NAME
t
t
t
t
t
t
t
t
t
t
t
t
RC
AA
ACS
BA
OE
CLZ
BE
OLZ
CHZ
BDO
OHZ
OH
(1)
Vcc / 0V
1V/ns
0.5Vcc
C
C
L
L
Read Cycle Time
Address Access Time
Chip Select Access Time
Data Byte Control Access Time
Output Enable to Output Valid
Chip Select to Output Low Z
Data Byte Control to Output Low Z
Output Enable to Output in Low Z
Chip Deselect to Output in High Z
Data Byte Control to Output High Z
Output Disable to Output in High Z
Data Hold from Address Change
= 30pF+1TTL
= 100pF+1TTL
DESCRIPTION
DataSheet4U.com
( TA = -40 to + 85
5
BA
is 70ns/55ns (@speed=70ns/55ns) without address toggle.
(LB,UB)
(LB,UB)
(LB,UB)
KEY TO SWITCHING WAVEFORMS
o
WAVEFORM
C )
CYCLE TIME : 70ns
70
10
10
MIN. TYP. MAX.
--
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--
--
5
5
--
--
--
(Vcc = 2.7~5.5V)
--
--
--
--
--
--
--
--
--
--
--
--
INPUTS
MUST BE
STEADY
MAY CHANGE
FROM H TO L
MAY CHANGE
FROM L TO H
DON T CARE:
ANY CHANGE
PERMITTED
DOES NOT
APPLY
STC62WV25616
70
70
35
35
35
35
30
--
--
--
--
--
,
CYCLE TIME : 55ns
10
10
55
MIN. TYP. MAX.
--
--
--
--
5
5
--
--
--
(Vcc = 3.0~5.5V)
--
--
--
--
--
--
--
--
--
--
--
--
OUTPUTS
MUST BE
STEADY
WILL BE
CHANGE
FROM H TO L
WILL BE
CHANGE
FROM L TO H
CHANGE :
STATE
UNKNOWN
CENTER
LINE IS HIGH
IMPEDANCE
”OFF ”STATE
55
55
30
30
30
30
25
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Revision 2.1
Jan.
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
2004