CY7C1470V25
CY7C1472V25
CY7C1474V25
Switching Waveforms (continued)
NOP, STALL and DESELECT Cycles[21, 22, 24]
1 2 3
CLK
CEN
CE
ADV/LD
WE
BWx
| 4 |
|
|
|
| 5 |
|
| 6 |
| 7 |
|
| 8 | 9 | 10 | ||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ADDRESS ![NOP, STALL and DESELECT Cycles[21, 22, 24]](/images/new-backgrounds/126841/12684141xi2.webp){kind=small}
A1 ![ZZ Mode Timing[25, 26]](/images/new-backgrounds/126841/12684141xi3.webp){kind=small}
A2
Data
WRITE | READ | STALL |
D(A1) | Q(A2) |
|
|
|
|
ZZ Mode Timing[25, 26]
CLK
A3 | A4 |
|
D(A1) | Q(A2) | Q(A3) |
READ | WRITE | STALL |
Q(A3) | D(A4) |
|
DON’T CARE
| A5 |
| D(A4) |
NOP | READ |
| Q(A5) |
UNDEFINED
tCHZ
Q(A5)
DESELECT CONTINUE DESELECT
t ZZ
ZZ
t ZZI
ISUPPLY
I DDZZ
ALL INPUTS (except ZZ)
Outputs (Q)
Notes:
DON’T CARE
t ZZREC
t RZZI
DESELECT or READ Only
24.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.
25.Device must be deselected when entering ZZ mode. See cycle description table for all possible signal conditions to deselect the device.
26.I/Os are in
Document #: | Page 21 of 28 |
[+] Feedback
