Document Number: 001-98295 Rev. *M

Page 5 of 19

S70FL01GS

3.

Input/Output Summary

Table 2. Signal List

Signal Name

Type

Description

RESET#

Input

Hardware Reset: Low = device resets and returns to standby state, ready to receive a

command. The signal has an internal pull-up resistor and may be left unconnected in the host

system if not used.

SCK

Input

Serial Clock.

CS1#

Input

Chip Select. FL512S #1.

CS2#

Input

Chip Select. FL512S #2.

SI / IO0

I/O

Serial Input for single bit data commands or IO0 for Dual or Quad commands.

SO / IO1

I/O

Serial Output for single bit data commands. IO1 for Dual or Quad commands.

WP# / IO2

I/O

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# / IO3

I/O

Hold (pause) serial transfer in single bit or Dual data commands. IO3 in Quad-I/O mode. The

signal has an internal pull-up resistor and may be left unconnected in the host system if not used

for Quad commands.

Supply

Core Power Supply.

Supply

Section 7. for more details.

Supply

Ground.

NC

Unused

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

RFU

Reserved

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.

DNU

Reserved

Do Not Use. 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

connect any host system signal to this connection.