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CY7C1387FV25 Datasheet(PDF) 9 Page - Cypress Semiconductor

Part # CY7C1387FV25
Description  18-Mbit (512K x 36/1M x 18) Pipelined DCD Sync SRAM
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Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

CY7C1387FV25 Datasheet(HTML) 9 Page - Cypress Semiconductor

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CY7C1386DV25, CY7C1386FV25
CY7C1387DV25, CY7C1387FV25
Document Number: 38-05548 Rev. *E
Page 9 of 30
ZZ Mode Electrical Characteristics
Parameter
Description
Test Conditions
Min.
Max.
Unit
IDDZZ
Sleep mode standby current
ZZ > VDD – 0.2V
80
mA
tZZS
Device operation to ZZ
ZZ > VDD – 0.2V
2tCYC
ns
tZZREC
ZZ recovery time
ZZ < 0.2V
2tCYC
ns
tZZI
ZZ Active to sleep current
This parameter is sampled
2tCYC
ns
tRZZI
ZZ Inactive to exit sleep current
This parameter is sampled
0
ns
Truth Table [4, 5, 6, 7, 8, 9]
Operation
Add. Used
CE1 CE2 CE3 ZZ ADSP ADSC ADV WRITE OE CLK
DQ
Deselect Cycle, Power Down
None
H
X
X
L
X
L
X
X
X
L-H Tri-State
Deselect Cycle, Power Down
None
L
L
X
L
L
X
X
X
X
L-H Tri-State
Deselect Cycle, Power Down
None
L
X
H
L
L
X
X
X
X
L-H Tri-State
Deselect Cycle, Power Down
None
L
L
X
L
H
L
X
X
X
L-H Tri-State
Deselect Cycle, Power Down
None
L
X
H
L
H
L
X
X
X
L-H Tri-State
Sleep Mode, Power Down
None
X
X
X
H
X
X
X
X
X
X
Tri-State
READ Cycle, Begin Burst
External
L
H
L
L
L
X
X
X
L
L-H
Q
READ Cycle, Begin Burst
External
L
H
L
L
L
X
X
X
H
L-H Tri-State
WRITE Cycle, Begin Burst
External
L
H
L
L
H
L
X
L
X
L-H
D
READ Cycle, Begin Burst
External
L
H
L
L
H
L
X
H
L
L-H
Q
READ Cycle, Begin Burst
External
L
H
L
L
H
L
X
H
H
L-H Tri-State
READ Cycle, Continue Burst
Next
X
X
X
L
H
H
L
H
L
L-H
Q
READ Cycle, Continue Burst
Next
X
X
X
L
H
H
L
H
H
L-H Tri-State
READ Cycle, Continue Burst
Next
H
X
X
L
X
H
L
H
L
L-H
Q
READ Cycle, Continue Burst
Next
H
X
X
L
X
H
L
H
H
L-H Tri-State
WRITE Cycle, Continue Burst
Next
X
X
X
L
H
H
L
L
X
L-H
D
WRITE Cycle, Continue Burst
Next
H
X
X
L
X
H
L
L
X
L-H
D
READ Cycle, Suspend Burst
Current
X
X
X
L
H
H
H
H
L
L-H
Q
READ Cycle, Suspend Burst
Current
X
X
X
L
H
H
H
H
H
L-H Tri-State
READ Cycle, Suspend Burst
Current
H
X
X
L
X
H
H
H
L
L-H
Q
READ Cycle, Suspend Burst
Current
H
X
X
L
X
H
H
H
H
L-H Tri-State
WRITE Cycle, Suspend Burst
Current
X
X
X
L
H
H
H
L
X
L-H
D
WRITE Cycle, Suspend Burst
Current
H
X
X
L
X
H
H
L
X
L-H
D
Notes
4. X = Don't Care, H = Logic HIGH, L = Logic LOW.
5. WRITE = L when any one or more byte write enable signals and BWE = L or GW = L. WRITE = H when all byte write enable signals, BWE, GW = H.
6. The DQ pins are controlled by the current cycle and the OE signal. OE is asynchronous and is not sampled with the clock.
7. CE1, CE2, and CE3 are available only in the TQFP package. BGA package has only 2 chip selects CE1 and CE2.
8. The SRAM always initiates a read cycle when ADSP is asserted, regardless of the state of GW, BWE, or BWX. Writes may occur only on subsequent clocks after
the ADSP or with the assertion of ADSC. As a result, OE must be driven HIGH prior to the start of the write cycle to allow the outputs to tri-state. OE is a don't
care for the remainder of the write cycle.
9. OE is asynchronous and is not sampled with the clock rise. It is masked internally during write cycles. During a read cycle all data bits are tri-state when OE is
inactive or when the device is deselected, and all data bits behave as output when OE is active (LOW).


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