CY7C038V-25AC Cypress Semiconductor Corp, CY7C038V-25AC Datasheet - Page 15

• Manufacturer Part Number: CY7C038V-25AC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C038V-25AC

• Density: 1.125Mb
• Access Time (max): 25ns
• Sync/async: Asynchronous
• Architecture: Not Required
• Clock Freq (max): Not RequiredMHz
• Operating Supply Voltage (typ): 3.3V
• Address Bus: 16b
• Package Type: TQFP
• Operating Temp Range: 0C to 70C
• Number Of Ports: 2
• Supply Current: 165mA
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 100
• Word Size: 18b
• Number Of Words: 64K
• Lead Free Status / RoHS Status: Not Compliant

Table 1. Non-Contending Read/Write
Table 2. Interrupt Operation Example (assumes BUSY
Table 3. Semaphore Operation Example
Document #: 38-06078 Rev. *B
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
Notes
37. A
38. If BUSY
39. If BUSY
CE
H
H
H
X
X
X
X
L
L
L
L
L
L
L
L
0L–15L
Function
and A
R
L
R/W
=L, then no change.
=L, then no change.
H
H
H
H
H
X
X
X
X
X
L
Function
L
L
L
Flag
R
0R–15R
L
Flag
R
Flag
Flag
,FFFF/FFFE for the CY7C028V/038V.
OE
X
X
X
X
X
H
X
X
X
X
L
L
L
L
L
Inputs
R/W
X
X
X
L
UB
X
H
H
H
X
X
H
X
H
X
L
L
L
L
L
L
CE
I/O
X
X
L
L
L
LB
0
X
H
H
H
X
X
H
X
H
X
L
L
L
L
L
–I/O
1
0
0
1
1
0
1
1
1
0
1
OE
17
X
X
X
L
Left I/O
Left Port
L
SEM
H
H
H
H
H
H
H
H
X
L
L
L
L
L
L
0
High Z
High Z
Data In
High Z
Data In
Data Out
High Z
Data Out
High Z
Data Out
Data Out
Data In
Data In
A
–I/O
7FFF
7FFE
0L–14L
L
X
X
1
1
1
0
0
1
1
0
1
1
1
=BUSY
I/O
17
Right
9
–I/O
R
17
=HIGH)
Semaphore free
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
Semaphore free
Left port has semaphore token
Left port has semaphore token
Outputs
INT
H
L
X
X
[38]
[39]
L
High Z
High Z
High Z
Data In
Data In
High Z
Data Out
Data Out
High Z
Data Out
Data Out
Data In
Data In
[37]
R/W
I/O
X
X
X
L
CY7C027V/027VN/027AV/028V
0
R
–I/O
CE
8
X
X
L
L
R
CY7C037V/037AV/038V
Deselected: Power Down
Deselected: Power Down
Write to Upper Byte Only
Write to Lower Byte Only
Write to Both Bytes
Read Upper Byte Only
Read Lower Byte Only
Read Both Bytes
Outputs Disabled
Read Data in Semaphore Flag
Read Data in Semaphore Flag
Write D
Write D
Not Allowed
Not Allowed
Status
OE
X
L
X
X
Right Port
R
IN0
IN0
into Semaphore Flag
into Semaphore Flag
Operation
A
7FFE
7FFF
0R–14R
X
X
Page 15 of 18
INT
H
L
[39]
X
X
[38]
R
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