AM29BL802C Datasheet, PDF (8/46 Pages) SPANSION – 8 Megabit (512 K x 16-Bit) CMOS 3.0 Volt-only Burst Mode Flash Memory

DATA SHEET
PIN CONFIGURATION
A0–A18 = 19 addresses
DQ0–DQ15 = 16 data inputs/outputs
CE#
= Chip Enable Input. This signal shall be
asynchronous relative to CLK for the
burst mode.
OE#
= Output Enable Input. This signal shall
be asynchronous relative to CLK for
the burst mode.
WE#
= Write enable. This signal shall be
asynchronous relative to CLK for the
burst mode.
V_SS
= Device ground
NC
= No connect. Pin not connected
internally
RY/BY# = Ready Busy output
CLK
= Clock Input that can be tied to the
system or microprocessor clock and
provides the fundamental timing and
internal operating frequency. CLK
latches input addresses in conjunction
with LBA# input and increments the
burst address with the BAA# input.
LBA#
= Load Burst Address input. Indicates
that the valid address is present on the
address inputs.
LBA# Low at the rising edge of the
clock latches the address on the
address inputs into the burst mode
Flash device. Data becomes available
t_PACC ns of initial access time after the
rising edge of the same clock that
latches the address.
LBA# High indicates that the address
is not valid
BAA#
= Burst Address Advance input.
Increments the address during the
burst mode operation
BAA# Low enables the burst mode
Flash device to read from the next
word when gated with the rising edge
of the clock. Data becomes available
t_BACC ns of burst access time after the
rising edge of the clock
BAA # High prevents the rising edge of
the clock from advancing the data to
the next word output. The output data
remains unchanged.
IND#
= Highest burst counter address
reached. IND# is low at the end of a
32-word burst sequence (when word
Da + 31 is output). The output will
wrap around to Da on the next CLK
cycle (with BAA# low).
RESET# = Hardware reset input
Note: The address, data, and control signals (RY/BY#, LBA,
BAA, IND, RESET, OE#, CE#, and WE#) are 5 V tolerant.
LOGIC SYMBOL
19
A0–A18
16
DQ0–DQ15
CLK
CE#
OE#
WE#
RESET#
LBA#
IND#
RY/BY#
BAA#
6
Am29BL802C
22371C7 November 3, 2006