SST26VF040A-80ISLASHMFVAO datasheet(37/73 Pages) MICROCHIP

Nome de Peças	SST26VF040A-80I/MFVAO

Descrição Electrónicos	2.5V/3.0V 4-Mbit Serial Quad I/O??(SQI?? Flash Memory

PDF	73 Pages

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Fabricante Electrônico	MICROCHIP [Microchip Technology]

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DS20006292B-page 37

SST26VF040A

5.33

Lock-Down Protection Settings

(LDPS)

The

Lock-Down

Protection

Settings

instruction

prevents changes to the Block Protection bits (BP0,

BP1, BP2, BP3) of the STATUS register during device

operation. Lock-Down resets after power cycling or

hardware Reset; this allows the Block Protection

settings to be changed. Execute WREN before

initiating

the

Lock-Down

Protection

Settings

instruction. To execute a Lock-Down Protection

Settings command, the host drives CE# low, then

sends the Lock-Down Protection Settings command

cycle (8DH), then drive CE# high. Executing the LDPS

instruction will set the VLP bit in the Configuration

FIGURE 5-38:

LOCK-DOWN PROTECTION SETTINGS (SQI)

FIGURE 5-39:

LOCK-DOWN PROTECTION SETTINGS (SPI)

Note:

C[1:0] = 8DH

MODE 3

SCK

SIO[3:0]

CE#

C1 C0

MODE 0

MODE 3

SCK

SIO0

CE#

MODE 0

234567

SIO[3:1]

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