CY7C006-15JC CYPRESS [Cypress Semiconductor], CY7C006-15JC Datasheet - Page 10

• Manufacturer Part Number: CY7C006-15JC
• Description: 16K x 8/9 Dual-Port Static RAM with Sem, Int, Busy
• Manufacturer: CYPRESS [Cypress Semiconductor]

Switching Waveforms
Read with BUSY (M/S=HIGH)
Semaphore Contention
Write Timing with Busy Input (M/S=LOW)
Notes:
26. I/O
27. Semaphores are reset (available to both ports) at cycle start.
28. If t
ADDRESS
ADDRESS
DATA
DATA IN
A
A
0R
BUSY
0L
R/W
SPS
0R
SEM
OUTL
SEM
–A
R/W
BUSY
–A
R/W
R/W
= I/O
is violated, the semaphore will definitely be obtained by one side or the other, but there is no guarantee which side will control the semaphore.
2R
2L
R
R
R
L
L
R
R
L
L
0L
= LOW (request semaphore); CE
[26, 27, 28]
(continued)
t
[19]
PS
R
= CE
t
WB
L
t
= HIGH.
MATCH
SPS
MATCH
t
BLA
MATCH
MATCH
t
WC
t
PWE
10
t
PWE
t
WH
t
WDD
t
VALID
SD
t
DDD
t
HD
t
BHA
t
BDD
CY7C006
CY7C016
VALID
C006-16
C006-17
C006-18