CY7C008V-20AC Cypress Semiconductor Corp, CY7C008V-20AC Datasheet - Page 15
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CY7C008V-20AC
Manufacturer Part Number
CY7C008V-20AC
Description
Manufacturer
Cypress Semiconductor Corp
Datasheets
1.CY7C008V-20AC.pdf
(18 pages)
2.CY7C008V-20AC.pdf
(18 pages)
3.CY7C008V-20AC.pdf
(18 pages)
4.CY7C008V-20AC.pdf
(18 pages)
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