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CY7C0241E-15AXCT

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22
CY7C024E, CY7C0241E
CY7C025E, CY7C0251E
Document Number: 001-62932 Rev. *A Page 16 of 22
Switching Waveforms (continued)
VALID
t
DDD
t
WDD
MATCH
MATCH
R/W
R
DATA IN
R
DATA
OUTL
t
WC
ADDRESS
R
t
PWE
VALID
t
SD
t
HD
ADDRESS
L
t
PS
t
BLA
t
BHA
t
BDD
BUSY
L
Figure 11. Timing Diagram of Read with BUSY (M/S=HIGH)
[48]
t
PWE
R/W
BUSY
t
WB
t
WH
Figure 12. Write Timing with Busy Input (M/S=LOW)
Note
48. CE
L
= CE
R
= LOW.
CY7C024E, CY7C0241E
CY7C025E, CY7C0251E
Document Number: 001-62932 Rev. *A Page 17 of 22
Note
49. If t
PS
is violated, the busy signal is asserted on one side or the other, but there is no guarantee to which side BUSY is asserted.
Switching Waveforms (continued)
ADDRESS MATCH
t
PS
t
BLC
t
BHC
ADDRESS MATCH
t
PS
t
BLC
t
BHC
CE
R
ValidFirst:
ADDRESS
L,R
BUSY
R
CE
L
CE
R
BUSY
L
CE
R
CE
L
ADDRESS
L,R
Figure 13. Busy Timing Diagram No.1 (CE Arbitration)
[49]
CE
L
Valid First:
ADDRESS MATCH
t
PS
ADDRESS
L
BUSY
R
ADDRESS MISMATCH
t
RC
or t
WC
t
BLA
t
BHA
ADDRESS
R
ADDRESS MATCH ADDRESS MISMATCH
t
PS
ADDRESS
L
BUSY
L
t
RC
or t
WC
t
BLA
t
BHA
ADDRESS
R
Right AddressValid First:
Figure 14. Busy Timing Diagram No.2 (Address Arbitration)
[49]
Left Address Valid First:
CY7C024E, CY7C0241E
CY7C025E, CY7C0251E
Document Number: 001-62932 Rev. *A Page 18 of 22
Figure 15. Interrupt Timing Diagrams
Notes
50. t
HA
depends on which enable pin (CE
L
or R/W
L
) is deasserted first.
51. t
INS
or t
INR
depends on which enable pin (CE
L
or R/W
L
) is asserted last.
Switching Waveforms (continued)
WRITE FFF (1FFF CY7C025)
t
WC
Right Side Clears INT
R
:
t
HA
READ FFF
t
RC
t
INR
WRITE FFE (1FFE CY7C025)
t
WC
Right SideSets INT
L
:
Left Side Sets INT
R
:
Left Side Clears INT
L
:
READ FFE
t
INR
t
RC
ADDRESS
R
CE
L
R/W
L
INT
L
OE
L
ADDRESS
R
R/W
R
CE
R
INT
L
ADDRESS
R
CE
R
R/W
R
INT
R
OE
R
ADDRESS
L
R/W
L
CE
L
INT
R
t
INS
t
HA
t
INS
(1FFF CY7C025)
(1FFE CY7C025)
[50]
[51]
[51]
[51]
[50]
[51]
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22

CY7C0241E-15AXCT

Mfr. #:
Buy CY7C0241E-15AXCT
Manufacturer:
Cypress Semiconductor
Description:
IC SRAM 72K PARALLEL 100TQFP
Lifecycle:
New from this manufacturer.
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