S75WS256NDFBAWMB datasheet(79/216 Pages) SPANSION

79 / 216 page

February 17, 2005 S75WS-N-00_A0

S75WS256Nxx Based MCPs

Advance

Information

Notes:

1. PA = Program Address, PD = Program Data, VA = Valid Address for reading status bits.

2. In progress and complete refer to status of program operation.

3. A23–A14 for the WS256N (A22–A14 for the WS128N, A21–A14 for the WS064N) are don’t care during command

sequence unlock cycles.

4. Addresses are latched on the first rising edge of CLK.

5. Either CE# or AVD# is required to go from low to high in between programming command sequences.

6. The Synchronous programming operation is dependent of the Set Device Read Mode bit in the Configuration Register.

The Configuration Register must be set to the Synchronous Read Mode.

Figure 12.15 Synchronous Program Operation Timings

Note: Use setup and hold times from conventional program operation.

Figure 12.16 Accelerated Unlock Bypass Programming Timing

OE#

CE#

Data

Addresses

WE#

CLK

VCC

555h

tWC

tWPH

tWP

tVCS

tDH

tCH

Progress

tWHWH1

Complete

Program Command Sequence (last two cycles)

Read Status Data

tDS

tAVDP

A0h

tAS

tCAS

tAH

tAVCH

tCSW

tAVSC

AVD#

CE#

AVD#

WE#

Addresses

Data

OE#

ACC

Don't Care

A0h

Don't Care

VID

VIL or VIH

VID

VIDS

S75WS256NDFBAWMB Datasheet(PDF) 79 Page - SPANSION

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