CY7C008V-20AC Cypress Semiconductor Corp, CY7C008V-20AC Datasheet - Page 15

• Manufacturer Part Number: CY7C008V-20AC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C008V-20AC

• Density: 512Kb
• Access Time (max): 20ns
• Operating Supply Voltage (typ): 5V
• Package Type: TQFP
• Operating Temp Range: 0C to 70C
• Supply Current: 265mA
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 100
• Word Size: 8b
• 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
Notes:
Document #: 38-06044 Rev. *B
40. A
41. If BUSY
42. If BUSY
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
CE
H
H
X
H
L
L
L
0L–16L
Function
R
L
R/W
and A
=L, then no change.
=L, then no change.
X
H
X
H
X
Function
L
L
Flag
R
Inputs
0R–16R
L
Flag
R
Flag
Flag
OE
, 1FFFF/1FFFE for the CY7C009V/19V.
X
H
X
X
X
L
L
R/W
X
X
X
L
SEM
L
H
X
H
H
L
L
L
CE
X
X
L
L
I/O
High Z
Data Out
High Z
Data In
Data Out
Data In
L
0
–I/O
Outputs
I/O
1
0
0
1
1
0
1
1
1
0
1
OE
X
X
X
L
8
0
–I/O
Left
Left Port
L
8
FFFF (or 1FFFF)
FFFE (or 1FFFE)
I/O
A
0
0L–16L
Deselected: Power-Down
Read Data in Semaphore Flag
I/O Lines Disabled
Write into Semaphore Flag
Read
Write
Not Allowed
–I/O
X
X
L
1
1
1
0
0
1
1
0
1
1
1
=BUSY
8
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
[41]
[42]
L
[40]
R/W
X
X
X
L
R
CE
Operation
X
X
L
L
R
OE
Status
X
X
X
L
Right Port
R
CY7C008V/009V
CY7C018V/019V
FFFF (or 1FFFF)
FFFE (or 1FFFE)
A
0R–16R
X
X
Page 15 of 18
INT
H
L
[42]
X
X
[41]
R