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CY7C199
Document #: 38-05160 Rev. **
Page 6 of 16
Switching Characteristics Over the Operating Range[3,7] (continued)
7C199-20
7C199-25
7C199-35
7C199-45
Parameter
Description
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Unit
READ CYCLE
tRC
Read Cycle Time
20
25
35
45
ns
tAA
Address to Data Valid
20
25
35
45
ns
tOHA
Data Hold from Address
Change
33
3
3
ns
tACE
CE LOW to Data Valid
20
25
35
45
ns
tDOE
OE LOW to Data Valid
9
10
16
16
ns
tLZOE
OE LOW to Low Z[8]
00
0
0
ns
tHZOE
OE HIGH to High Z[8, 9]
911
15
15
ns
tLZCE
CE LOW to Low Z[8]
33
3
3
ns
tHZCE
CE HIGH to High Z[8, 9]
911
15
15
ns
tPU
CE LOW to Power-Up
0
0
0
0
ns
tPD
CE HIGH to Power-Down
20
20
20
25
ns
WRITE CYCLE[10,11]
tWC
Write Cycle Time
20
25
35
45
ns
tSCE
CE LOW to Write End
15
18
22
22
ns
tAW
Address Set-Up to Write End
15
20
30
40
ns
tHA
Address Hold from Write End
0
0
0
0
ns
tSA
Address Set-Up to Write Start
0
0
0
0
ns
tPWE
WE Pulse Width
15
18
22
22
ns
tSD
Data Set-Up to Write End
10
10
15
15
ns
tHD
Data Hold from Write End
0
0
0
0
ns
tHZWE
WE LOW to High Z[9]
10
11
15
15
ns
tLZWE
WE HIGH to Low Z[8]
33
3
3
ns
Switching Waveforms
Read Cycle No. 1[12, 13]
Notes:
12. Device is continuously selected. OE, CE = VIL.
13. WE is HIGH for read cycle.
ADDRESS
DATA OUT
PREVIOUS DATA VALID
DATA VALID
tRC
tAA
tOHA
C199–8
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