S25FL127S View Datasheet(PDF) - Spansion Inc.
Part Name
Description
Manufacturer
S25FL127S Datasheet PDF : 131 Pages
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Data Sheet (Preliminary)
Hardware Interface
Serial Peripheral Interface with Multiple Input / Output (SPI-MIO)
Many memory devices connect to their host system with separate parallel control, address, and data signals
that require a large number of signal connections and larger package size. The large number of connections
increase power consumption due to so many signals switching and the larger package increases cost.
The S25FL-S family of devices reduces the number of signals for connection to the host system by serially
transferring all control, address, and data information over 4 to 6 signals. This reduces the cost of the memory
package, reduces signal switching power, and either reduces the host connection count or frees host
connectors for use in providing other features.
The S25FL-S family of devices uses the industry standard single bit Serial Peripheral Interface (SPI) and also
supports optional extension commands for two bit (Dual) and four bit (Quad) wide serial transfers. This
multiple width interface is called SPI Multi-I/O or SPI-MIO.
3. Signal Descriptions
3.1
Input/Output Summary
Table 3.1 Signal List
Signal Name
RESET#
SCK
CS#
SI / IO0
SO / IO1
WP# / IO2
HOLD# / IO3
or IO3 /
RESET#
VCC
VSS
NC
RFU
DNU
Type
Input
Input
Input
I/O
I/O
I/O
I/O
Supply
Supply
Unused
Reserved
Reserved
Description
Hardware Reset. The signal has an internal pull-up resistor and may be left unconnected
in the host system if not used.
Serial Clock.
Chip Select.
Serial Input for single bit data commands or IO0 for Dual or Quad commands.
Serial Output for single bit data commands. IO1 for Dual or Quad commands.
Write Protect when not in Quad mode. IO2 in Quad mode. The signal has an internal
pull-up resistor and may be left unconnected in the host system if not used for Quad
commands.
Hold (pause) serial transfer in single bit or Dual data commands. IO3 in Quad-I/O mode.
RESET# when enabled by SR2[5]=1 and not in Quad-I/O mode, CR1[1]=0. or when CS#
is high. The signal has an internal pull-up resistor and may be left unconnected in the host
system if not used for Quad commands.
Power Supply.
Ground.
Not Connected. No device internal signal is connected to the package connector nor is
there any future plan to use the connector for a signal. The connection may safely be
used for routing space for a signal on a Printed Circuit Board (PCB). However, any signal
connected to an NC must not have voltage levels higher than VCC.
Reserved for Future Use. No device internal signal is currently connected to the
package connector but there is potential future use of the connector for a signal. 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.
Do Not Use. 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 this connection.
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S25FL127S
S25FL127S_00_02 April 25, 2013
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