EN25S64-104WIP datasheet(4/62 Pages) EON

Part #	EN25S64-104WIP

Description	64 Megabit 1.8V Serial Flash Memory with 4Kbyte Uniform Sector

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Manufacturer	EON [Eon Silicon Solution Inc.]

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This Data Sheet may be revised by subsequent versions

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or modifications due to changes in technical specifications.

4

EN25S64

Rev. G, Issue Date: 2011/09/23

SIGNAL DESCRIPTION

Serial Data Input, Output and IOs (DI, DO and DQ0, DQ1, DQ2, DQ3)

The EN25S64 support standard SPI, Dual SPI and Quad SPI operation. Standard SPI instructions use

the unidirectional DI (input) pin to serially write instructions, addresses or data to the device on the

rising edge of the Serial Clock (CLK) input pin. Standard SPI also uses the unidirectional DO (output) to

read data or status from the device on the falling edge CLK.

Dual and Quad SPI instruction use the bidirectional IO pins to serially write instruction, addresses or

data to the device on the rising edge of CLK and read data or status from the device on the falling edge

of CLK.

Serial Clock (CLK)

The SPI Serial Clock Input (CLK) pin provides the timing for serial input and output operations. ("See

SPI Mode")

Chip Select (CS#)

The SPI Chip Select (CS#) pin enables and disables device operation. When CS# is high the device is

deselected and the Serial Data Output (DO, or DQ0, DQ1, DQ2 and DQ3) pins are at high impedance.

When deselected, the devices power consumption will be at standby levels unless an internal erase,

program or status register cycle is in progress. When CS# is brought low the device will be selected,

power consumption will increase to active levels and instructions can be written to and data read from

the device. After power-up, CS# must transition from high to low before a new instruction will be

accepted.

Write Protect (WP#)

The Write Protect (WP#) pin can be used to prevent the Status Register from being written. Used in

conjunction with the Status Register’s Block Protect (BP0, BP1, BP2, BP3) bits and Status Register

Protect (SRP) bits, a portion or the entire memory array can be hardware protected. The WP# function

is only available for standard SPI and Dual SPI operation, when during Quad SPI, this pin is the Serial

Data IO (DQ2) for Quad I/O operation.

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