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CY7C343
Document #: 38-03015 Rev. *B
Page 8 of 19
External Synchronous Switching Characteristics Over Operating Range (continued)[7]
Parameter
Description
7C343-30
7C343-35
Unit
Min. Max. Min. Max.
tPD1
Dedicated Input to Combinatorial Output Delay[8]
Com’l/Ind
30
35
ns
Mil
30
35
tPD2
I/O Input to Combinatorial Output Delay[9]
Com’l/Ind
44
53
ns
Mil
44
53
tPD3
Dedicated Input to Combinatorial Output Delay with Expander
Delay[10]
Com’l/Ind
44
55
ns
Mil
44
55
tPD4
I/O Input to Combinatorial Output Delay with Expander Delay[5, 11] Com’l/Ind
58
73
ns
Mil
58
73
tEA
Input to Output Enable Delay[5, 8]
Com’l/Ind
30
35
ns
Mil
30
35
tER
Input to Output Disable Delay[5, 8]
Com’l/Ind
30
35
ns
Mil
30
35
tCO1
Synchronous Clock Input to Output Delay
Com’l/Ind
16
20
ns
Mil
16
20
tCO2
Synchronous Clock to Local Feedback to Combinatorial Output[5,12] Com’l/Ind
35
42
ns
Mil
35
42
tS1
Dedicated Input or Feedback Set-Up Time to Synchronous Clock
Input[8]
Com’l/Ind
20
25
ns
Mil
20
25
tS2
I/O Input Set-Up Time to Synchronous Clock Input[8, 13]
Com’l/Ind
35
42
ns
Mil
35
42
tH
Input Hold Time from Synchronous Clock Input[8]
Com’l/Ind
0
0
ns
Mil
0
0
tWH
Synchronous Clock Input HIGH Time
Com’l/Ind
10
12.5
ns
Mil
10
12.5
tWL
Synchronous Clock Input LOW Time
Com’l/Ind
10
12.5
ns
Mil
10
12.5
tRW
Asynchronous Clear Width[5, 8]
Com’l/Ind
30
35
ns
Mil
30
35
tRR
Asynchronous Clear Recovery Time[5, 8]
Com’l/Ind
30
35
ns
Mil
30
35
tRO
Asynchronous Clear to Registered Output Delay[8]
Com’l/Ind
30
35
ns
Mil
30
35
tPR
Asynchronous Preset Recovery Time[5, 8]
Com’l/Ind
30
35
ns
Mil
30
35
tPO
Asynchronous Preset to Registered Output Delay[8]
Com’l/Ind
30
35
ns
Mil
30
35
tCF
Synchronous Clock to Local Feedback Input[5, 14]
Com’l/Ind
3
5
ns
Mil
3
5
tP
External Synchronous Clock Period (1/fMAX3)
[5]
Com’l/Ind
20
25
ns
Mil
20
25
fMAX1
External Maximum Frequency (1/(tCO1 + tS1))
[5, 15]
Com’l/Ind
27
22.2
MHz
Mil
27
22.2
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