CY7C1324 View Datasheet(PDF) - Cypress Semiconductor
Part Name
Description
Manufacturer
CY7C1324 Datasheet PDF : 12 Pages
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PRELIMINARY
CY7C1324
Cycle Description Table[1, 2, 3]
Cycle Description
Deselected Cycle, Power-down
ADD
Used
None
CE1 CE3 CE2 ZZ ADSP ADSP ADV WE OE CLK DQ
H X XL X
L
X X X L-H HIGH-Z
Deselected Cycle, Power-down None
L
X LL
L
X
X X X L-H HIGH-Z
Deselected Cycle, Power-down None
L H XL
L
X
X X X L-H HIGH-Z
Deselected Cycle, Power-down None
L
X LL
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 XX
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 HL
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
X X XL H
H
L H L L-H Q
READ Cycle, Continue Burst
Next
X X XL H
H
L H H L-H HIGH-Z
READ Cycle, Continue Burst
Next
H X XL X
H
L H L L-H Q
READ Cycle, Continue Burst
Next
H X XL X
H
L H H L-H HIGH-Z
WRITE Cycle, Continue Burst
Next
X X XL H
H
L L X L-H D
WRITE Cycle, Continue Burst
Next
H X XL 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
4
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