s71ws256nc0bawa30 Meet Spansion Inc., s71ws256nc0bawa30 Datasheet - Page 157
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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)
- Current page: 157 of 188
- Download datasheet (4Mb)
41.4
41.5
September 15, 2005 S71WS-N_01_A4
Burst Stop
Wait Control (WAIT#)
Data out
Data in
CLK
ADV#
CS#
Read
Write
Burst stop is used when the system wants to stop burst operation on purpose. If driving CS# to
V
ation, the new burst operation cannot be issued. The new burst operation can be issued only after
the previous burst operation is finished.
The burst stop feature is very useful because it enables the user to utilize the un-supported burst
length such as 1 burst or 2 burst, used mostly in the mobile handset application environment.
The WAIT# signal is the device’s output signal that indicates to the host system when it’s data-
out or data-in is valid.
To be compatible with the Flash interfaces of various microprocessor types, the WAIT# polarity
(WP) can be configured. The polarity can be programmed to be either low enable or high enable.
For the timing of WAIT# signal, the WAIT# signal should be set active one clock prior to the data
regardless of Read or Write cycle.
Note:
WAIT#
WAIT#
IH
during the burst read operation, the burst operation is stopped. During the burst read oper-
LATENCY: 5, Burst Length: 4, WP: Low Enable
High -Z
High -Z
A d v a n c e
0
1
Figure 41.2 WAIT# and Read/Write Latency Control
Latency 5
Latency 5
2
I n f o r m a t i o n
S71WS-Nx0 Based MCPs
3
D0
4
D1
5
DQ0
D2
6
DQ1
D3
7
DQ2
8
DQ3
9
10
11
12
13
155
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