AM29BDS320G datasheet(40/74 Pages) SPANSION

Part #	AM29BDS320G

Description	32 Megabit (2 M x 16-Bit), 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory

PDF	74 Pages

Scroll/Zoom	100%

Manufacturer	SPANSION [SPANSION]

Direct Link	http://www.spansion.com

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40 / 74 page

Am29BDS320G

27243B1 October 1, 2003

Prelimin ary

Notes:

1. VA = Valid address for programming. During a sector erase operation, a valid

address is any sector address within the sector being erased. During chip erase, a

valid address is any non-protected sector address.

2. DQ7 should be rechecked even if DQ5 = “1” because DQ7 may change simulta-

neously with DQ5.

Figure 4. Data# Polling Algorithm

RDY: Ready

The RDY is a dedicated output that, by default, indicates (when at logic low) the

system should wait 1 clock cycle before expecting the next word of data. Using

the RDY Configuration Command Sequence, RDY can be set so that a logic low

indicates the system should wait 2 clock cycles before expecting valid data.

RDY functions only while reading data in burst mode. The following conditions

cause the RDY output to be low: during the initial access (in burst mode), and

after the boundary that occurs every 64 words beginning with the 64th address,

3Fh.

DQ7 = Data?

Yes

DQ5 = 1?

Yes

FAIL

PASS

Read DQ7–DQ0

Addr = VA

Read DQ7–DQ0

Addr = VA

DQ7 = Data?

START

AM29BDS320G Datasheet(PDF) 40 Page - SPANSION