7C1325-100(2000) View Datasheet(PDF) - Cypress Semiconductor
Part Name
Description
Manufacturer
7C1325-100 Datasheet PDF : 16 Pages
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CY7C1325
Cycle Description Table[1, 2, 3]
Cycle Description
Deselected Cycle, Power-down
ADD
Used
None
CE1 CE3 CE2 ZZ ADSP ADSC ADV WE OE CLK DQ
HXXL
X
L
X X X L-H High-Z
Deselected Cycle, Power-down None L X L L
L
X
X X X L-H High-Z
Deselected Cycle, Power-down None L H X L
L
X
X X X L-H High-Z
Deselected Cycle, Power-down None L X L L
H
L
X X X L-H High-Z
Deselected Cycle, Power-down None X X X L
H
L
X X X L-H High-Z
SNOOZE MODE, Power-Down None X X X H
X
X
X X X X High-Z
READ Cycle, Begin Burst
External L L H L
L
X
X X L L-H Q
READ Cycle, Begin Burst
External L L H L
L
X
X X H L-H High-Z
WRITE Cycle, Begin Burst
External L L H L
H
L
X L X L-H D
READ Cycle, Begin Burst
External L L H L
H
L
X H L L-H Q
READ Cycle, Begin Burst
External L L H L
H
L
X H H L-H High-Z
READ Cycle, Continue Burst
Next
XXXL
H
H
L H L L-H Q
READ Cycle, Continue Burst
Next
XXXL
H
H
L H H L-H High-Z
READ Cycle, Continue Burst
Next
HXXL
X
H
L H L L-H Q
READ Cycle, Continue Burst
Next
HXXL
X
H
L H H L-H High-Z
WRITE Cycle, Continue Burst Next
XXXL
H
H
L L X L-H D
WRITE Cycle, Continue Burst Next
HXXL
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 High-Z
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 High-Z
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:
1. X=”Don't Care,” 1=Logic HIGH, 0=Logic LOW.
2. The SRAM always initiates a read cycle when ADSP asserted, regardless of the state of GW, BWE, or BWS[1:0]. 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 three-state. OE
is a “don't care” for the remainder of the write cycle.
3. OE is asynchronous and is not sampled with the clock rise. During a read cycle DQ=High-Z when OE is inactive, and DQ=data when OE is active.
6
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