CY7C144AV-25AXC Cypress Semiconductor Corp, CY7C144AV-25AXC Datasheet - Page 12

• Manufacturer Part Number: CY7C144AV-25AXC
• Description: IC SRAM 64KBIT 25NS 64LQFP
• Manufacturer: Cypress Semiconductor Corp
• Type: Asynchronousr

Specifications of CY7C144AV-25AXC

• Memory Size: 64K (8K x 8)
• Package / Case: 64-LQFP
• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Speed: 25ns
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Access Time: 25 ns
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Maximum Operating Current: 165 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Number Of Ports: 2
• Operating Supply Voltage: 3.3 V
• Memory Configuration: 8K X 8
• Supply Voltage Range: 3V To 3.6V
• Memory Case Style: TQFP
• No. Of Pins: 100
• Operating Temperature Range: 0°C To +70°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 428-2156; CY7C144AV-25AXC

Switching Waveforms
Document #: 38-06051 Rev. *C
Timing Diagram of Semaphore Contention
Semaphore Read After Write Timing, Either Side
Notes:
37. CE = HIGH for the duration of the above timing (both write and read cycle).
38. I/O
39. Semaphores are reset (available to both ports) at cycle start.
40. If t
A
A
A
SPS
0R
0R
0L
0
SEM
SEM
SEM
–A
R/W
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
L
L
R
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
[38, 39, 40]
L
= HIGH.
t
IN
HA
VALID
[37]
t
HD
t
SWRD
t
SOP
t
SOP
READ CYCLE
t
SAA
VALID ADRESS
t
DOE
CY7C138AV/144AV/006AV
CY7C139AV/145AV/016AV
t
ACE
CY7C007AV/017AV
DATA
OUT
VALID
t
OHA
Page 12 of 20
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