Cypress Perform CY7C136A - Manual (Page 5)

CY7C132, CY7C136
CY7C136A, CY7C142, CY7C146
Document #: 38-06031 Rev. *E Page 5 of 15
Write Cycle
[12]
t
WC
Write Cycle Time 15 25 30 ns
t
SCE
CE LOW to Write End 12 20 25 ns
t
AW
Address Setup to Write End 12 20 25 ns
t
HA
Address Hold from Write End 2 2 2 ns
t
SA
Address Setup to Write Start 0 0 0 ns
t
PWE
R/W Pulse Width 12 15 25 ns
t
SD
Data Setup to Write End 10 15 15 ns
t
HD
Data Hold from Write End 0 0 0 ns
t
HZWE
R/W LOW to High Z
[7]
10 15 15 ns
t
LZWE
R/W HIGH to Low Z
[7]
0 0 0 ns
Busy/Interrupt Timing
t
BLA
BUSY LOW from Address Match 15 20 20 ns
t
BHA
BUSY HIGH from Address Mismatch [13] 15 20 20 ns
t
BLC
BUSY LOW from CE LOW 15 20 20 ns
t
BHC
BUSY HIGH from CE HIGH
[13]
15 20 20 ns
t
PS
Port Set Up for Priority 5 5 5 ns
t
WB
R/W LOW after BUSY LOW
[14]
0 0 0 ns
t
WH
R/W HIGH after BUSY HIGH 13 20 30 ns
t
BDD
BUSY HIGH to Valid Data 15 25 30 ns
t
DDD
Write Data Valid to Read Data Valid Note 15 Note 15 Note 15 ns
t
WDD
Write Pulse to Data Delay Note 15 Note 15 Note 15 ns
Interrupt Timing
[16]
t
WINS
R/W to INTERRUPT Set Time 15 25 25 ns
t
EINS
CE to INTERRUPT Set Time 15 25 25 ns
t
INS
Address to INTERRUPT Set Time 15 25 25 ns
t
OINR
OE to INTERRUPT Reset Time [13] 15 25 25 ns
t
EINR
CE to INTERRUPT Reset Time
[13]
15 25 25 ns
t
INR
Address to INTERRUPT Reset Time [13] 15 25 25 ns
Shaded areas contain preliminary information.
Switching Characteristics
Over the Operating Range (Speeds -15, -25, -30) [8] (continued)
Parameter Description
7C136-15 [4]
7C146-15
7C132-25 [4]
7C136-25
7C142-25
7C146-25
7C132-30
7C136-30
7C142-30
7C146-30
Unit
Min Max Min Max Min Max
Notes
12. The internal write time of the memory is defined by the overlap of CE LOW and R/W LOW. Both signals must be LOW to initiate a write and either signal can terminate
a write by going HIGH. The data input setup and hold timing must be referenced to the rising edge of the signal that terminates the write.
13. These parameters are measured from the input signal changing, until the output pin goes to a high impedance state.
14. CY7C142/CY7C146 only.
15. 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 toggled.
CE for Port B is toggled.
R/W for Port B is toggled during valid read.
16. 52-pin PLCC and PQFP versions only.
[+] Feedback