AM29BDS128HD8VFI AMD [Advanced Micro Devices], AM29BDS128HD8VFI Datasheet - Page 11
AM29BDS128HD8VFI
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]
Datasheet
1.AM29BDS128HD8VFI.pdf
(89 pages)
- Current page: 11 of 89
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INPUT/OUTPUT DESCRIPTIONS
Amax–A0
DQ15–DQ0 =
CE#
OE#
WE#
V
V
V
NC
RDY
CLK
May 10, 2006 27024B3
CC
IO
SS
=
=
=
=
=
=
=
=
=
=
Address inputs
Amax = A22 (128 Mb) or A21 (64 Mb)
Data input/output
Chip Enable input. Asynchronous
relative to CLK for the Burst mode.
Output Enable input. Asynchronous
relative to CLK for the Burst mode.
Write Enable input.
Device Power Supply
(1.65 – 1.95 V).
Input & Output Buffer Power Supply
(1.65 – 1.95 V).
Ground
No Connect; not connected internally
Ready output;
In Synchronous Mode, indicates the
status of the Burst read.
Low = data invalid. High = data valid.
In Asynchronous Mode, indicates the
status of the internal program and
erase function.
Low = program/erase in progress.
High Impedance = program/erase
completed.
CLK is not required in asynchronous
mode. In burst mode, after the initial
word is output, subsequent active
edges of CLK increment the internal
address counter.
Am29BDS128H/Am29BDS640H
D A T A
S H E E T
AVD#
RESET#
WP#
ACC
LOGIC SYMBOL
23 or 22
=
=
=
=
WP#
ACC
CE#
OE#
Amax–A0
WE#
RESET#
AVD#
Address Valid input. Indicates to
device that the valid address is
present on the address inputs
(Amax–A0).
Low = for asynchronous mode,
indicates valid address; for burst
mode, causes starting address to be
latched.
High = device ignores address inputs
Hardware reset input. Low = device
resets and returns to reading array
data
Hardware write protect input. At V
disables program and erase functions
in the four highest and four lowest
sectors. At V
sectors.
At V
automatically places device in unlock
bypass mode. At V
Should be at V
conditions.
CLK
HH
, accelerates programming;
DQ15–DQ0
IH
, does not protect any
IH
RDY
for all other
IL
, locks all sectors.
16
IL
,
9
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