W39V040FC View Datasheet(PDF) - Winbond

Part Name

Description

Manufacturer

W39V040FC

512K X 8 CMOS FLASH MEMORY WITH FWH INTERFACE

Winbond 

W39V040FC

12. EMBEDDED TOGGLE BIT ALGORITHM

Start

Read Byte

(DQ0-DQ7)

Read Byte

(DQ0-DQ7)

No

Toggle Bit

=Toggle ?

Yes

No

DQ5 = 1 ?

Yes

Read Byte

(DQ0-DQ7) Twin

No

Toggle Bit

=Toggle ?

Fail

Pass

Note: Recheck toggle bit because it may stop toggling as DQ5 changes to “1”.

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