Switching Characteristics
Over the Operating Range[12, 13] (continued)
Parameter
Description
Busy/Interrupt Timing
tBLA
BUSY LOW from address match
tBHA
BUSY HIGH from address mismatch[20]
tBLC
tBHC
BUSY LOW from CE LOW
BUSY HIGH from CE HIGH[20]
tPS
tWB[21]
Port set-up for priority
R/W LOW after BUSY LOW
tWH
R/W HIGH after BUSY HIGH
tBDD
BUSY HIGH to valid data
tDDD
Write data valid to read data valid
tWDD
Write pulse to data delay
Interrupt Timing
tWINS
R/W to INTERRUPT set time
tEINS
CE to INTERRUPT set time
tINS
tOINR
tEINR
tINR
Address to INTERRUPT set time
OE to INTERRUPT reset time[20]
CE to INTERRUPT reset time[20]
Address to INTERRUPT reset time[20]
Shaded areas contain preliminary information.
CY7C130, CY7C130A
CY7C131, CY7C131A
7C131-15[14]
7C131A-15
7C141-15
Min Max
7C130-25[14]
7C131-25
7C140-25
7C141-25
Min Max
7C130-30
7C130A-30
7C131-30
7C140-30
Unit
7C141-30
Min Max
–
15
–
20
–
20 ns
–
15
–
20
–
20 ns
–
15
–
20
–
20 ns
–
15
–
20
–
20 ns
5
–
5
–
5
–
ns
0
–
0
–
0
–
ns
13
–
20
–
30
–
ns
–
15
–
25
–
30 ns
– Note 22 – Note 22 – Note 22 ns
– Note 22 – Note 22 – Note 22 ns
–
15
–
25
–
25 ns
–
15
–
25
–
25 ns
–
15
–
25
–
25 ns
–
15
–
25
–
25 ns
–
15
–
25
–
25 ns
–
15
–
25
–
25 ns
Notes
20. These parameters are measured from the input signal changing, until the output pin goes to a high-impedance state.
21. CY7C140/CY7C141 only.
22. A write operation on Port A, where Port A has priority, leaves the data on Port B’s outputs undisturbed until one access time after one of the following:
BUSY on Port B goes HIGH.
Port B’s address is toggled.
CE for Port B is toggled.
R/W for Port B is toggled during valid read.
Document Number: 38-06002 Rev. *H
Page 8 of 22