Cypress NoBL CY7C1470BV25 User Manual download pdf (Page 23)

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)

456 78910

CLK

CEN

BWx

ADV/LD

ADDRESS

A3 A4

D(A4)

Data

In-Out (DQ)

Q(A5)

WRITE

D(A4)

STALLWRITE

D(A1)

123

READ

Q(A2)

STALL NOP READ

Q(A5)

DESELECT CONTINUE

DESELECT

DON’T CARE UNDEFINED

CHZ

D(A1) Q(A2) Q(A3)

SUPPLY

CLK

ZZREC

LL INPUTS

(except ZZ)

DON’T CARE

DDZZ

ZZI

RZZI

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 page 10 for all possible signal conditions to deselect the device.

24.IOs are in High-Z when exiting ZZ sleep mode.

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