CY7C1371D-133BGC Cypress Semiconductor Corp, CY7C1371D-133BGC Datasheet - Page 12

• Manufacturer Part Number: CY7C1371D-133BGC
• Description: IC,SYNC SRAM,512KX36,CMOS,BGA,119PIN,PLASTIC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C1371D-133BGC

• Format - Memory: RAM
• Memory Type: SRAM - Synchronous
• Memory Size: 18M (512K x 36)
• Speed: 133MHz
• Interface: Parallel
• Voltage - Supply: 3.135 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 119-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS compliant by exemption

Truth Table
Partial Truth Table for Read/Write
Partial Truth Table for Read/Write
Notes
Document Number: 38-05556 Rev. *I
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
Function (CY7C1371D)
Read
Write no bytes written
Write byte A – (DQ
Write byte B – (DQ
Write byte C – (DQ
Write byte D – (DQ
Write all Bytes
Function (CY7C1373D)
Read
Write - no bytes written
Write byte A – (DQ
Write byte B – (DQ
Write all bytes
2. X = “Don't Care.” H = Logic HIGH, L = Logic LOW. BW
3. Write is defined by BW
4. When a write cycle is detected, all IOs are tri-stated, even during byte writes.
5. The DQs and DQP
6. CEN = H, inserts wait states.
7. Device powers up deselected and the IOs 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 and DQP
9. Table only lists a partial listing of the byte write combinations. Any Combination of BW
selects are asserted, see truth table for details.
is inactive or when the device is deselected, and DQs and DQP
Operation
[2, 3, 4, 5, 6, 7, 8]
X
B
C
D
B
pins are controlled by the current cycle and the OE signal. OE is asynchronous and is not sampled with the clock.
A
A
X
and DQP
and DQP
and DQP
and DQP
and DQP
and DQP
, and WE. See truth table for read/write.
B
D
A
C
A
B
)
)
)
)
)
)
Address
External
External
External
Current
Used
None
None
None
None
None
None
Next
Next
Next
Next
X
CE
= 0 signifies at least one byte write select is active, BW
[2, 3, 9]
[2, 3, 9]
H
X
X
X
X
X
X
X
X
X
L
L
L
L
1
CE
X
WE
H
H
H
H
X
X
X
X
X
X
X
X
X
L
= data when OE is active.
H
L
L
L
L
L
L
2
CE
H
X
X
X
X
L
X
L
X
X
X
X
L
L
3
ZZ
H
L
L
L
L
L
L
L
L
L
L
L
L
L
BW
X
X
H
H
H
H
L
L
ADV/LD WE BW
is valid Appropriate write is based on which byte write is active.
A
H
H
H
H
H
X
X
L
L
L
L
L
L
L
H
H
X
X
X
X
X
X
L
X
X
X
X
L
BW
WE
X
H
H
H
H
H
L
L
L
L
L
L
B
X
X
X
X
X
X
X
X
H
H
X
X
L
L
X
= valid signifies that the desired byte write
X
OE
X
X
X
X
H
H
X
X
X
X
X
X
L
L
BW
BW
CEN CLK
X
H
H
H
H
X
H
H
L
L
L
L
H
L
L
L
X
L
L
L
L
L
L
L
L
L
C
A
L->H
L->H Data out (Q)
L->H
L->H Data in (D)
L->H Data in (D)
L->H
L->H
L->H
L->H Data out (Q)
L->H
L->H
L->H
L->H
X
X
= tri-state when OE
CY7C1371D
CY7C1373D
Tri-state
Tri-state
Tri-state
Tri-state
Tri-state
Tri-state
Tri-state
Tri-state
Tri-state
BW
BW
Page 12 of 33
H
H
H
H
H
H
X
L
X
L
DQ
L
L
–
D
B
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