JS28F640P30T85 datasheet(47/99 Pages) NUMONYX

47 / 99 page

November 2007

Datasheet

Order Number: 306666-11

P30

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

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

Configuration

0x60

Read Configuration

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 Register bits SR[4] and SR[5],

indicating a command sequence error.

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

subsequent read operations access array data.

Table 24: Command Codes and Definitions (Sheet 2 of 2)

Mode

Code

Device Mode

Description

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