CY7C019V-20AC Cypress Semiconductor Corp, CY7C019V-20AC Datasheet - Page 10

• Manufacturer Part Number: CY7C019V-20AC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C019V-20AC

• Density: 1.125Mb
• Access Time (max): 20ns
• Sync/async: Asynchronous
• Architecture: Not Required
• Clock Freq (max): Not RequiredMHz
• Operating Supply Voltage (typ): 3.3V
• Address Bus: 17b
• Package Type: TQFP
• Operating Temp Range: 0C to 70C
• Number Of Ports: 2
• Supply Current: 175mA
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 100
• Word Size: 9b
• Number Of Words: 128K
• Lead Free Status / RoHS Status: Not Compliant

Document #: 38-06044 Rev. *C
Switching Waveforms
Timing Diagram of Semaphore Contention
Semaphore Read After Write Timing, Either Side
Notes:
32. CE = HIGH for the duration of the above timing (both write and read cycle).
33. I/O
34. Semaphores are reset (available to both ports) at cycle start.
35. If t
A
A
A
SPS
0R
0R
0L
0
–A
SEM
SEM
R/W
SEM
R/W
I/O
R/W
–A
–A
= I/O
OE
is violated, the semaphore will definitely be obtained by one side or the other, but which side will get the semaphore is unpredictable.
2
2L
2R
0
R
R
L
L
0L
= LOW (request semaphore); CE
t
SA
(continued)
VALID ADRESS
t
AW
WRITE CYCLE
R
t
t
PWE
SCE
= CE
t
SD
DATA
t
MATCH
SPS
MATCH
[33, 34, 35]
L
= HIGH.
t
IN
HA
VALID
[32]
t
HD
t
SWRD
t
SOP
t
SOP
READ CYCLE
t
SAA
VALID ADRESS
t
DOE
t
ACE
DATA
CY7C008V/009V
CY7C018V/019V
OUT
VALID
t
OHA
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