AM29BDS320G SPANSION [SPANSION], AM29BDS320G Datasheet - Page 40
AM29BDS320G
Manufacturer Part Number
AM29BDS320G
Description
32 Megabit (2 M x 16-Bit), 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
Manufacturer
SPANSION [SPANSION]
Datasheet
1.AM29BDS320G.pdf
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38
RDY: Ready
Notes:
1. VA = Valid address for programming. During a sector erase operation, a valid
2. DQ7 should be rechecked even if DQ5 = “1” because DQ7 may change simulta-
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.
address is any sector address within the sector being erased. During chip erase, a
valid address is any non-protected sector address.
neously with DQ5.
No
Figure 4. Data# Polling Algorithm
Read DQ7–DQ0
Read DQ7–DQ0
DQ7 = Data?
DQ7 = Data?
Addr = VA
Addr = VA
DQ5 = 1?
START
FAIL
No
Yes
No
Am29BDS320G
P r e l i m i n a r y
Yes
Yes
PASS
27243B1 October 1, 2003
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