EN25Q64 Просмотр технического описания (PDF) - Eon Silicon Solution Inc.

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EN25Q64

64 Megabit Serial Flash Memorywith 4Kbyte Uniform Sector

Eon Silicon Solution Inc. 

Table 5. Manufacturer and Device Identification

OP Code

ABh

90h

9Fh

(M7-M0)

1Ch

1Ch

(ID15-ID0)

3017h

(ID7-ID0)

16h

16h

EN25Q64

Enable Quad Peripheral Interface mode (EQPI) (38h)

The Enable Quad Peripheral Interface mode (EQPI) instruction will enable the flash device for Quad

SPI bus operation. Upon completion of the instruction, all instructions thereafter will be 4-bit multiplexed

input/output until a power cycle or “ Reset Quad I/O instruction “ instruction, as shown in Figure 5. The

device did not support the Read Data Bytes (READ) (03h), Dual Output Fast Read (3Bh) and Dual

Input/Output FAST_READ (BBh) modes while the Enable Quad Peripheral Interface mode (EQPI) (38h)

turns on.

Figure 5. Enable Quad Peripheral Interface mode Sequence Diagram

Reset Quad I/O (RSTQIO) (FFh)

The Reset Quad I/O instruction resets the device to 1-bit Standard SPI operation. To execute a Reset

Quad I/O operation, the host drives CS# low, sends the Reset Quad I/O command cycle (FFh) then,

drives CS# high. This command can’t be used in Standard SPI mode.

This Data Sheet may be revised by subsequent versions

17

or modifications due to changes in technical specifications.

©2004 Eon Silicon Solution, Inc.,

Rev. J, Issue Date: 2011/07/07

www.eonssi.com

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