S25FL127SABMFI003 View Datasheet(PDF) - Cypress Semiconductor

Part Name

Description

Manufacturer

S25FL127SABMFI003

128-Mbit (16 Mbyte) 3.0 V SPI Flash Memory

Cypress Semiconductor 

S25FL127S

2.14 Do Not Use (DNU)

A device internal signal may be connected to the package connector. The connection may be used by Cypress 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.

2.15 Block Diagrams

Figure 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. 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

Document Number: 001-98282 Rev. *I

Page 13 of 142

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