24 / 29 page
PRELIMINARY
CY7C1471V33
CY7C1473V33
CY7C1475V33
Document #: 38-05288 Rev. *E
Page 24 of 29
NOP, STALL and DESELECT Cycles[23, 24, 26]
Note:
26. The IGNORE CLOCK EDGE or STALL cycle (Clock 3) illustrates CEN being used to create a pause. A Write is not performed during this cycle.
Switching Waveforms (continued)
WRITE
D(A1)
123
456789
CLK
tCYC
tCL
tCH
10
CE
tCEH
tCES
WE
CEN
tCENH
tCENS
BWX
ADV/LD
tAH
tAS
ADDRESS
A1
A2
A3
A4
A5
A6
A7
tDH
tDS
DQ
COMMAND
tCLZ
D(A1)
D(A2)
Q(A4)
Q(A3)
D(A2+1)
tDOH
tCHZ
tCDV
WRITE
D(A2)
BURST
WRITE
D(A2+1)
READ
Q(A3)
READ
Q(A4)
BURST
READ
Q(A4+1)
WRITE
D(A5)
READ
Q(A6)
WRITE
D(A7)
DESELECT
OE
tOEV
tOELZ
tOEHZ
DON’T CARE
UNDEFINED
D(A5)
tDOH
Q(A4+1)
D(A7)
Q(A6)