s71ws256nc0bawa30 Meet Spansion Inc., s71ws256nc0bawa30 Datasheet - Page 127
s71ws256nc0bawa30
Manufacturer Part Number
s71ws256nc0bawa30
Description
Stacked Multi-chip Product Mcp 256/512/128 Megabit 32m/16m/8m X 16 Bit Cmos 1.8 Volt-only Simultaneous Read/write, Burst-mode Flash Memory With 128/64megabit 8m/4m X 16-bit Psram.
Manufacturer
Meet Spansion Inc.
Datasheet
1.S71WS256NC0BAWA30.pdf
(188 pages)
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September 15, 2005 S71WS-N_01_A4
31.3.4
Asynchronous Write Timing Waveform in Synchronous Mode
31.3.4.1 Write Cycle (Low ADV# Type)
MRS# = V
Notes:
1.
2.
3.
4.
5.
Notes:
1.
2.
CS#
UB#, LB#
Data out
CLK
ADV#
Address
WE#
Data in
A write occurs during the overlap (t
with asserting UB# or LB# for single byte operation or simultaneously asserting UB# and LB# for double byte operation.
A write ends at the earliest transition when CS# goes high or WE# goes high. The t
of write to the end of write.
t
t
t
going high.
Clock input does not have any affect to the write operation if the parameter t
Low ADV# Type, WE# Controlled.
tWP(min) = 70ns for continuous write operation over 50 times.
CW
AS
WR
Symbol
t
t
t
t
t
is measured from the address valid to the beginning of write.
WC
CW
AW
BW
WP
is measured from the CS# going low to the end of write.
is measured from the end of write to the address change. t
Table 31.7 Asynchronous Write in Synchronous Mode AC Characteristics
IH
A d v a n c e
, OE# = V
t
Figure 31.8 Timing Waveform Of Write Cycle (Low ADV# Type)
0
AS
55 (note 2)
1
IH
Read Latency 5
Min
70
60
60
60
, WAIT# = High-Z, WE# Controlled
High-Z
2
Speed
t
I n f o r m a t i o n
WLRL
S71WS-Nx0 Based MCPs
WP
3
) of low CS# and low WE#. A write begins when CS# goes low and WE# goes low
t
t
4
CW
AW
t
WC
Max
t
t
BW
—
—
—
—
—
WP
5
Units
6
ns
WR
7
t
is applied in case a write ends with CS# or WE#
DW
Dat a Valid
Symbol
8
t
WLRL
t
t
t
t
WR
DW
DH
AS
WLRL
9
t
DH
t
WR
is met.
WP
10
High- Z
is measured from the beginning
Min
30
1
0
0
0
11
Speed
Max
12
—
—
—
—
—
13
clock
Units
ns
14
125
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