28F640L30 datasheet(21/100 Pages) INTEL

21 / 100 page

28F640L30, 28F128L30, 28F256L30

Datasheet

Block

Locking/

Unlocking

0x60

Lock Block

Setup

First cycle of a 2-cycle command; prepares the CUI for block lock configuration changes. If the

next command is not Block Lock (0x01), Block Unlock (0xD0), or Block Lock-Down (0x2F), the

CUI sets Status Register bits SR[4] and SR[5], indicating a command sequence error.

0x01 Lock Block

If the previous command was Block Lock Setup (0x60), the addressed block is locked.

0xD0 Unlock Block

If the previous command was Block Lock Setup (0x60), the addressed block is unlocked. If the

addressed block is in a lock-down state, the operation has no effect.

0x2F

Lock-Down

Block

If the previous command was Block Lock Setup (0x60), the addressed block is locked down.

Protection 0xC0

Program

Protection

Setup

First cycle of a 2-cycle command; prepares the device for a Protection Register or Lock

the programming algorithm

Configu-

ration

0x60

Read

Configuration

Setup

First cycle of a 2-cycle command; prepares the CUI for device read configuration. If the Set

Read Configuration Register command (0x03) is not the next command, the CUI sets Status

0x03

Read

Configuration

If the previous command was Read Configuration Register Setup (0x60), the CUI latches the

address and writes A[15:0] to the Read Configuration Register. Following a Configure Read

Configuration Register command, subsequent read operations access array data.

Table 6.

Command Codes and Definitions (Sheet 2 of 2)

Mode

Code Device Mode

Description

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