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CYM1464
Document #: 38-05272 Rev. **
Page 4 of 8
WRITE CYCLE[5]
tWC
Write Cycle Time
35
45
55
ns
tSCS
CS LOW to Write End
30
40
50
ns
tAW
Address Set-Up to Write End
30
40
50
ns
tHA
Address Hold from Write End
3
3
3
ns
tPWE
WE Pulse Width
25
35
40
ns
tSD
Data Set-Up to Write End
20
25
35
ns
tHD
Data Hold from Write End
2
3
3
ns
tLZWE
WE HIGH to Low Z
0
0
0
ns
tHZWE
WE LOW to High Z[4]
15
15
20
ns
Switching Characteristics Over the Operating Range (continued)[3]
Parameter
Description
1464-35
1464-45
1464-55
Unit
Min.
Max.
Min.
Max.
Min.
Max.
Switching Waveforms
Notes:
6.
WE is HIGH for read cycle.
7.
Device is continuously selected, CS = VIL.
8.
Address valid prior to or coincident with CS transition LOW.
PREVIOUS DATA VALID
DATA VALID
tRC
tAA
tOHA
ADDRESS
DATAOUT
Read Cycle No. 1 [6,7]
DATA VALID
tRC
tACS
tDOE
tLZOE
tLZCS
HIGH IMPEDANCE
tHZOE
tHZCS
HIGH
IMPEDANCE
DATA OUT
OE
CS
V CC
SUPPLY
CURRENT
50%
50%
tPU
ICC
ISB
tPD
Read Cycle No. 2
[6,8]
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