CYM1851PZ-25C View Datasheet(PDF) - Cypress Semiconductor
Part Name
Description
Manufacturer
CYM1851PZ-25C Datasheet PDF : 9 Pages
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CYM1851
Switching Characteristics Over the Operating Range[3](continued)
Parameter
Description
READ CYCLE
tRC
Read Cycle Time
tAA
Address to Data Valid
tOHA
Data Hold from Address Change
tACS
CS LOW to Data Valid
tDOE
OE LOW to Data Valid
tLZOE
OE LOW to Low Z
tHZOE
tLZCS
tHZCS
OE HIGH to High Z
CS LOW to Low Z[4]
CS HIGH to High Z[4, 5]
tPD
CS HIGH to Power-Down
WRITE CYCLE[6]
tWC
tSCS
tAW
tHA
tSA
tPWE
tSD
tHD
tLZWE
tHZWE
Write Cycle Time
CS LOW to Write End
Address Set-Up to Write End
Address Hold from Write End
Address Set-Up to Write Start
WE Pulse Width
Data Set-Up to Write End
Data Hold from Write End
WE HIGH to Low Z
WE LOW to High Z[5]
1851-20
1851-25
1851-35
Min. Max. Min. Max. Min. Max. Unit
20
25
35
ns
20
25
35
ns
3
3
3
ns
20
25
35
ns
12
15
18
ns
0
0
0
ns
10
12
15
ns
3
3
3
ns
10
12
15
ns
20
25
35
ns
20
25
35
ns
17
20
30
ns
17
20
30
ns
3
3
3
ns
2
2
2
ns
15
20
30
ns
12
15
20
ns
2
2
2
ns
3
3
3
ns
0
12
0
12
0
15
ns
Switching Waveforms
Read Cycle No. 1 [7,8]
tRC
ADDRESS
DATA OUT
tAA
tOHA
PREVIOUS DATA VALID
DATA VALID
Notes:
7. WE is HIGH for read cycle.
8. Device is continuously selected, CS = VIL, and OE= VIL.
Document #: 38-05274 Rev. **
Page 4 of 9
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