CY7C1471V33_12 CYPRESS [Cypress Semiconductor], CY7C1471V33_12 Datasheet - Page 8

• Manufacturer Part Number: CY7C1471V33_12
• Manufacturer: CYPRESS [Cypress Semiconductor]

Truth Table
The truth table for CY7C1471V33 follows.
Document Number: 38-05288 Rev. *N
Notes
Deselect cycle
Deselect cycle
Deselect cycle
Continue deselect cycle
Read cycle (begin burst)
Read cycle (continue burst)
NOP/dummy read (begin burst)
Dummy read (continue burst)
Write cycle (begin burst)
Write cycle (continue burst)
NOP/write abort (begin burst)
Write abort (continue burst)
Ignore clock edge (stall)
Sleep mode
1. X = “Don't Care.” H = Logic HIGH, L = Logic LOW. BW
2. Write is defined by BW
3. When a Write cycle is detected, all I/Os are tri-stated, even during byte writes.
4. The DQs and DQP
5. CEN = H, inserts wait states.
6. Device powers up deselected with the I/Os in a tri-state condition, regardless of OE.
7. OE is asynchronous and is not sampled with the clock rise. It is masked internally during write cycles. During a read cycle DQs and DQP
are asserted, see
inactive or when the device is deselected, and DQs and DQP
Operation
Truth Table for Read/Write on page 9
X
pins are controlled by the current cycle and the OE signal. OE is asynchronous and is not sampled with the clock.
X
, and WE. See
Truth Table for Read/Write on page
Address Used CE
External
External
External
Current
[1, 2, 3, 4, 5, 6, 7]
None
None
None
None
None
None
Next
Next
Next
Next
X
for details.
= L signifies at least one byte write select is active, BW
X
= data when OE is active.
H
X
X
X
X
X
X
X
X
X
L
L
L
L
1
CE
9.
X
X
X
H
X
H
X
H
X
H
X
X
X
L
2
CE
H
X
X
X
L
X
L
X
L
X
L
X
X
X
3
ZZ ADV/LD WE BW
H
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
X
X
L
L
L
L
L
L
L
H
H
X
X
X
X
X
X
X
X
X
X
L
L
X
= valid signifies that the desired byte write selects
X
X
X
X
X
X
X
X
H
H
X
X
L
L
X
OE CEN CLK
X
X
X
X
H
H
X
X
X
X
X
X
L
L
H
X
L
L
L
L
L
L
L
L
L
L
L
L
CY7C1471V33
X
= tri-state when OE is
L->H
L->H
L->H
L->H
L->H Data out (Q)
L->H Data out (Q)
L->H
L->H
L->H Data in (D)
L->H Data in (D)
L->H
L->H
L->H
X
Page 8 of 22
Tri-state
Tri-state
Tri-state
Tri-state
Tri-state
Tri-state
Tri-state
Tri-state
Tri-state
DQ
-