CYM1464PD-55C Datasheet

  • CYM1464PD-55C

  • 512Kx8 Static RAM Module

  • 191.19KB

  • 8页

  • CYPRESS

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CYM1464
Switching Characteristics
Over the Operating Range (continued)
[3]
1464-35
Parameter
WRITE CYCLE
[5]
t
WC
t
SCS
t
AW
t
HA
t
PWE
t
SD
t
HD
t
LZWE
t
HZWE
Write Cycle Time
CS LOW to Write End
Address Set-Up to Write End
Address Hold from Write End
WE Pulse Width
Data Set-Up to Write End
Data Hold from Write End
WE HIGH to Low Z
WE LOW to High Z
[4]
35
30
30
3
25
20
2
0
15
45
40
40
3
35
25
3
0
15
55
50
50
3
40
35
3
0
20
ns
ns
ns
ns
ns
ns
ns
ns
ns
Description
Min.
Max.
1464-45
Min.
Max.
1464-55
Min.
Max.
Unit
Switching Waveforms
Read Cycle No. 1
[6,7]
t
RC
ADDRESS
t
AA
t
OHA
DATAOUT
PREVIOUS DATA VALID
DATA VALID
Read Cycle No. 2
CS
[6,8]
t
RC
t
ACS
OE
t
DOE
t
LZOE
HIGH IMPEDANCE
DATA OUT
t
LZCS
t
PU
V
CC
SUPPLY
CURRENT
50%
t
PD
ICC
50%
ISB
DATA VALID
t
HZOE
t
HZCS
HIGH
IMPEDANCE
Notes:
6. WE is HIGH for read cycle.
7. Device is continuously selected, CS = V
IL
.
8. Address valid prior to or coincident with CS transition LOW.
Document #: 38-05272 Rev. **
Page 4 of 8

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