CY7C1355C-100BZC CYPRESS [Cypress Semiconductor], CY7C1355C-100BZC Datasheet - Page 7

• Manufacturer Part Number: CY7C1355C-100BZC
• Manufacturer: CYPRESS [Cypress Semiconductor]

Document #: 38-05688 Rev. *D
Truth Table
Truth Table for Read/Write
Deselect Cycle
Deselect Cycle
Deselect Cycle
Continue Deselect Cycle
READ Cycle (Begin Burst)
READ Cycle (Continue Burst)
NOP/DUMMY READ (Begin Burst) External
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
Read
Write No Bytes Written
Write Byte A – (DQ
Write Byte B – (DQ
Write Byte C – (DQ
Write Byte D – (DQ
Write All Bytes
Notes:
2. X =”Don't Care.” H = HIGH, L = LOW. BWx = 0 signifies at least one Byte Write Select is active, BWx = Valid signifies that the desired byte write selects are
3. Write is defined by BW
4. When a Write cycle is detected, all I/Os are tri-stated, even during Byte Writes.
5. The DQ pins are controlled by the current cycle and the OE signal. OE is asynchronous and is not sampled with the clock.
6. CEN = H, inserts wait states.
7. Device will power-up deselected and the I/Os in a tri-state condition, regardless of OE.
8. OE is asynchronous and is not sampled with the clock rise. It is masked internally during write cycles. During a read cycle DQs = Three-state when OE is inactive
asserted, see Truth Table for details.
or when the device is deselected, and DQs = data when OE is active.
Operation
[2, 3, 4, 5, 6, 7, 8]
Function (CY7C1379C)
C
D
B
A
)
)
)
X
)
, and WE. See Truth Table for Read/Write.
[2, 3]
ADRESS
External
External
Current
Used
None
None
None
None
None
None
Next
Next
Next
Next
CE
H
X
X
X
X
L
L
X
L
X
L
X
X
X
1
CE
X
X
X
H
X
H
X
H
X
H
X
X
X
L
2
CE
H
X
X
X
L
X
X
X
X
X
X
L
L
L
3
WE
H
L
L
L
L
L
L
ZZ ADV / LD WE
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
BW
X
H
H
H
H
L
L
A
X
X
X
X
H
X
H
X
X
X
X
X
L
L
BW
X
X
X
X
X
X
X
X
H
H
X
X
L
L
BW
X
H
H
H
H
X
L
L
OE CEN CLK
B
H
H
X
X
X
X
L
L
X
X
X
X
X
X
H
X
L
L
L
L
L
L
L
L
L
L
L
L
BW
L->H Data Out (Q)
L->H Data Out (Q)
L->H
L->H
L->H
L->H
L->H
L->H
L->H
L->H
L->H
L->H
L->H
X
H
H
H
H
L
L
CY7C1379C
X
C
Page 7 of 15
Data In (D)
Data In (D)
Tri-State
Tri-State
Tri-State
Tri-State
Tri-State
Tri-State
Tri-State
Tri-State
Tri-State
DQ
BW
–
X
H
H
H
H
L
L
D