CY7C144AV-25AXC Cypress Semiconductor Corp, CY7C144AV-25AXC Datasheet - Page 16

• 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

Table 1. Non-Contending Read/Write
Table 2. Interrupt Operation Example (assumes BUSY
Table 3. Semaphore Operation Example
Document #: 38-06051 Rev. *C
Set Right INT
Reset Right INT
Set Left INT
Reset Left INT
No action
Left port writes 0 to semaphore
Right port writes 0 to semaphore
Left port writes 1 to semaphore
Left port writes 0 to semaphore
Right port writes 1 to semaphore
Left port writes 1 to semaphore
Right port writes 0 to semaphore
Right port writes 1 to semaphore
Left port writes 0 to semaphore
Left port writes 1 to semaphore
Note:
45. See Functional Description for specific addresses by device part number.
46. If BUSY
47. If BUSY
CE
H
H
X
H
L
L
L
Function
L
R
R/W
= L, then no change.
= L, then no change.
X
H
X
H
X
L
Function
L
R
Flag
Inputs
L
Flag
R
Flag
Flag
OE
X
H
X
X
X
L
L
R/W
L
X
X
X
SEM
H
X
H
H
L
L
L
L
CE
I/O
High Z
Data Out
High Z
Data In
Data Out
Data In
L
X
X
L
L
0
–I/O
I/O
Outputs
1
0
0
1
1
0
1
1
1
0
1
OE
8
0
X
X
X
L
–I/O
Left
Left Port
L
8
I/O
1FFE
0
A
FFF
Deselected: Power-Down
Read Data in Semaphore Flag
I/O Lines Disabled
Write into Semaphore Flag
Read
Write
Not Allowed
–I/O
0L–14L
L
X
X
1
1
1
1
1
0
0
1
0
1
1
= BUSY
[45]
8
[45]
Right
R
= HIGH)
Semaphore free
Left Port has semaphore token
No change. Right side has no write access to semaphore
Right port obtains semaphore token
No change. Left port has no write access to semaphore
Left port obtains semaphore token
Semaphore free
Right port has semaphore token
Semaphore free
Left port has semaphore token
Semaphore free
INT
H
L
X
X
[47]
[46]
L
R/W
X
X
L
X
R
CY7C138AV/144AV/006AV
CY7C139AV/145AV/016AV
Operation
CE
X
X
L
L
R
OE
Status
CY7C007AV/017AV
X
X
X
L
Right Port
R
1FFE
A
FFF
0R–14R
X
X
[45]
[45]
Page 16 of 20
INT
H
L
[46]
X
X
[47]
R
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