S25FL127S View Datasheet(PDF) - Spansion Inc.
Part Name
Description
Manufacturer
S25FL127S Datasheet PDF : 131 Pages
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Data Sheet (Preliminary)
3.13
Reserved for Future Use (RFU)
No device internal signal is currently connected to the package connector but is there potential future use of
the connector. It is recommended to not use RFU connectors for PCB routing channels so that the PCB may
take advantage of future enhanced features in compatible footprint devices.
3.14
Do Not Use (DNU)
A device internal signal may be connected to the package connector. The connection may be used by
Spansion for test or other purposes and is not intended for connection to any host system signal. Any DNU
signal related function will be inactive when the signal is at VIL. The signal has an internal pull-down resistor
and may be left unconnected in the host system or may be tied to VSS. Do not use these connections for PCB
signal routing channels. Do not connect any host system signal to these connections.
3.15 Block Diagrams
Figure 3.2 Bus Master and Memory Devices on the SPI Bus - Single Bit Data Path
Reset#
WP#
SI
SO
SCK
Reset#
WP#
SI
SO
SCK
CS2#
CS1#
CS1#
CS2#
SPI
Bus Master
FL127S
Flash
FL127S
Flash
Figure 3.3 Bus Master and Memory Devices on the SPI Bus - Dual Bit Data Path
Reset#
WP#
IO1
IO0
SCK
Reset#
WP#
IO1
IO0
SCK
CS2# CS1#
CS1#
CS2#
SPI
Bus Master
FL127S
Flash
FL127S
Flash
20
S25FL127S
S25FL127S_00_02 April 25, 2013
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