AM29BDS128HD8VFI AMD [Advanced Micro Devices], AM29BDS128HD8VFI Datasheet - Page 85

• Manufacturer Part Number: AM29BDS128HD8VFI
• Description: 128 or 64 Megabit (8 M or 4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
• Manufacturer: AMD [Advanced Micro Devices]

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.
May 10, 2006 27024B3
Addresses
AVD#
WE#
Data
OE#
CE#
t
WPH
Command Sequence
PA/SA
t
AS
Last Cycle in
Sector Erase
Program or
t
WC
Figure 49. Back-to-Back Read/Write Cycle Timings
t
WP
PD/30h
t
t
AH
DS
Am29BDS128H/Am29BDS640H
t
t
t
OEH
DH
OE
t
RA
SR/W
D A T A
t
ACC
Read status (at least two cycles) in same bank
t
RC
and/or array data from other bank
RD
S H E E T
t
OEZ
t
OEH
RA
t
RC
RD
t
command sequence
GHWL
write or program
Begin another
555h
t
WC
AAh
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