CY7C1470BV25
CY7C1472BV25, CY7C1474BV25
Document #: 001-15032 Rev. *D Page 23 of 29
Figure 7 shows NOP, STALL and DESELECT Cycles waveform.[19, 20, 22]
Figure 7. NOP, STALL and DESELECT Cycles
Figure 8 shows ZZ Mode timing waveform.[23, 24]
Figure 8. ZZ Mode Timing
Switching Waveforms (continued)
READ
Q(A3)
45678910
CLK
CE
WE
CEN
BWx
ADV/LD
ADDRESS A3 A4 A5
D(A4)
Data
In-Out (DQ)
A1
Q(A5)
WRITE
D(A4)
STALLWRITE
D(A1)
123
READ
Q(A2)
STALL NOP READ
Q(A5)
DESELECT CONTINUE
DESELECT
DON’T CARE UNDEFINED
tCHZ
A2
D(A1) Q(A2) Q(A3)
tZZ
I
SUPPLY
CLK
ZZ
tZZREC
A
LL INPUTS
(except ZZ)
DON’T CARE
IDDZZ
tZZI
tRZZI
Outputs (Q)
High-Z
DESELECT or READ Only
Notes
22.The IGNORE CLOCK EDGE or STALL cycle (Clock 3) illustrated CEN being used to create a pause. A write is not performed during this cycle.
23.Device must be deselected when entering ZZ mode. See “Truth Table” on page10 for all possible signal conditions to deselect the device.
24.IOs are in High-Z when exiting ZZ sleep mode.
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