AM29BDS640G SPANSION [SPANSION], AM29BDS640G Datasheet - Page 72

• Manufacturer Part Number: AM29BDS640G
• Description: 64 Megabit (4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
• Manufacturer: SPANSION [SPANSION]

AC Characteristics
Note: Breakpoints in waveforms indicate that system may alternately read array data from the “non-busy bank” while
checking the status of the program or erase operation in the “busy” bank. The system should read status twice to ensure
valid information.
70
Addresses
AVD#
WE#
Data
OE#
CE#
t
WPH
Command Sequence
PA/SA
t
AS
Last Cycle in
Sector Erase
Program or
t
WC
Figure 33. Back-to-Back Read/Write Cycle Timings
t
PD/30h
WP
t
t
AH
DS
t
t
t
OEH
DH
OE
t
RA
SR/W
t
Read status (at least two cycles) in same bank
ACC
t
RC
and/or array data from other bank
Am29BDS640G
P r e l i m i n a r y
RD
t
OEZ
t
OEH
RA
t
RC
RD
t
command sequence
GHWL
write or program
Begin another
555h
25903C1 October 1, 2003
t
WC
AAh