S29CD032J datasheet(41/81 Pages) SPANSION

Part #	S29CD032J

Description	32/16 Megabit CMOS 2.6 Volt or 3.3 Volt-Only Simultaneous Read/Write, Dual Boot, Burst Mode Flash Memory with VersatileI/O?

PDF	81 Pages

Scroll/Zoom	100%

Manufacturer	SPANSION [SPANSION]

Direct Link	http://www.spansion.com

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41 / 81 page

October 11, 2012 S29CD-J_CL-J_00_B7

S29CD-J and S29CL-J Flash Family

Data

She e t

Figure 8.8 Toggle Bit Algorithm

Notes

1. Read toggle bit with two immediately consecutive reads to determine whether or not it is toggling.

2. Recheck toggle bit because it may stop toggling as DQ5 changes to 1.

8.8.5

DQ5: Exceeded Timing Limits

DQ5 indicates whether the program or erase time has exceeded a specified internal pulse count limit. Under

these conditions DQ5 produces a 1. This is a failure condition that indicates the program or erase cycle was

not successfully completed.

The DQ5 failure condition may appear if the system tries to program a 1 to a location that is previously

programmed to 0. Only an erase operation can change a 0 back to a 1. Under this condition, the device halts

the operation, and when the operation has exceeded the timing limits, DQ5 produces a 1.

Under both these conditions, the system issues the reset command to return the device to reading array data.

START

Yes

DQ5 = 1?

Yes

DQ6 = Toggle?

Read Byte

(DQ0-DQ7)

Address = VA

DQ6 = Toggle?

Read Byte Twice

(DQ0-DQ7)

Adrdess = VA

Read Byte

(DQ0-DQ7)

Address = VA

FAIL

PASS

(Note 1)

(Notes 1, 2)

S29CD032J Datasheet(PDF) 41 Page - SPANSION