S75WS256NDFBAWMB datasheet(32/216 Pages) SPANSION

32 / 216 page

S75WS256Nxx Based MCPs

S75WS-N-00_A0 February 17, 2005

Ad van c e

Inf o rmation

The Autoselect command sequence may be written to an address within a bank that is either

in the read or erase-suspend-read mode.

The Autoselect command may not be written while the device is actively programming or

erasing. Autoselect does not support simultaneous operations or burst mode.

The system must write the reset command to return to the read mode (or erase-suspend-

read mode if the bank was previously in Erase Suspend).

See Table 13.1 for command sequence details.

Table 8.9 Autoselect Addresses

Description

Address

Read Data

Manufacturer ID

(BA) + 00h

0001h

Device ID, Word 1

(BA) + 01h

227Eh

Device ID, Word 2

(BA) + 0Eh

2230 (WS256N)

2231 (WS128N)

2232 (WS064N)

Device ID, Word 3

(BA) + 0Fh

2200

Indicator Bits

(See Note)

(BA) + 03h

DQ15 - DQ8 = Reserved

DQ7 (Factory Lock Bit): 1 = Locked, 0 = Not Locked

DQ6 (Customer Lock Bit): 1 = Locked, 0 = Not Locked

DQ5 (Handshake Bit): 1 = Reserved, 0 = Standard Handshake

DQ4, DQ3 (WP# Protection Boot Code): 00 = WP# Protects both Top Boot and

Bottom Boot Sectors. 01, 10, 11 = Reserved

DQ2 = Reserved

DQ1 (DYB Power up State [Lock Register DQ4]): 1 = Unlocked (user option),

0 = Locked (default)

DQ0 (PPB Eraseability [Lock Register DQ3]): 1 = Erase allowed,

0 = Erase disabled

Sector Block Lock/

Unlock

(SA) + 02h

0001h = Locked, 0000h = Unlocked

Note: For WS128N and WS064, DQ1 and DQ0 are reserved.

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