CY7C43643 CYPRESS [Cypress Semiconductor], CY7C43643 Datasheet - Page 15

• Manufacturer Part Number: CY7C43643
• Description: 1K/4K/16K x36 Unidirectional Synchronous FIFO with Bus Matching
• Manufacturer: CYPRESS [Cypress Semiconductor]

Document #: 38-06021 Rev. *B
Switching Characteristics
t
t
t
t
t
t
t
t
t
t
t
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t
t
Notes:
18. Skew time is not a timing constraint for proper device operation and is only included to illustrate the timing relationship between the CLKA cycle and the CLKB
19. Writing data to the Mail1 register when the B
20. Writing data to the Mail2 register when the A
Parameter
SKEW1
SKEW2
A
WFF
REF
PAE
PAF
PMF
PMR
MDV
RSF
EN
DIS
RTR
cycle.
[18]
[18]
Skew Time between CLKA and CLKB for EF/OR
and FF/IR
Skew Time between CLKA and CLKB for AE
and AF
Access Time, CLKA to A
Propagation Delay Time, CLKA to FF/IR
Propagation Delay Time, CLKB to EF/OR
Propagation Delay Time, CLKB to AE
Propagation Delay Time, CLKA to AF
Propagation Delay Time, CLKA to MBF1 LOW or
MBF2 HIGH and CLKB to MBF2 LOW or MBF1
HIGH
Propagation Delay Time, CLKA to B
CLKB to A
Propagation Delay Time, MBA to A
MBB to B
Propagation Delay Time, MRS1/MRS2 or PRS
LOW to AE LOW, AF HIGH, FF/IR LOW, EF/OR
LOW and MBF1/MBF2 HIGH
Enable Time, CSA or W/RA LOW to A
and CSB LOW and W/RB HIGH to B
Disable Time, CSA or W/RA HIGH to A
Impedance and CSB HIGH or W/RB LOW to B
at High Impedance
Retransmit Recovery Time
0–35
0–35
Valid
[20]
Description
Over the Operating Range (continued)
0–35
0–35
0–35
outputs are active and MBB is HIGH.
outputs are active and MBA is HIGH.
and CLKB to B
0–35
0–35
0–35
0–35
0–35
Valid and
[19]
Active
at High
Active
and
0–35
0–35
Min.
CY7C43643/
90
5
7
1
1
1
1
1
0
1
1
1
1
1
63/83
–7
Max.
6
6
6
6
6
6
7
6
6
6
5
Min.
CY7C43643/
90
5
8
1
1
1
1
1
0
2
2
1
2
1
63/83
–10
Max.
11
10
8
8
8
8
8
8
9
8
6
Min.
CY7C43643/
7.5
12
90
3
2
1
1
1
0
3
3
1
2
1
CY7C43643
CY7C43663
CY7C43683
63/83
–15
Page 15 of 29
Max.
10
12
12
11
15
10
8
8
8
8
8
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns