JS28F640P30T85 datasheet(85/99 Pages) NUMONYX

85 / 99 page

November 2007

Datasheet

Order Number: 306666-11

P30

Figure 44: Block Lock Operations Flowchart

Start

Write 60h

Block Address

Write 90h

Read Block Lock

Status

Locking

Change?

Lock Change

Complete

Write 01,D0,2Fh

Block Address

Write FFh

Any Address

Yes

Write

( Optional)

Read

( Optional)

Standby

( Optional)

Write

Lock

Setup

Lock,

Unlock, or

Lockdown

Confirm

Read ID

Plane

Block Lock

Status

Read

Array

Data = 60h

Addr = Block to lock/unlock/lock-down (BA)

Data = 01h (Lock block)

D0h (Unlock block)

2Fh (Lockdown block)

Addr = Block to lock/unlock/lock-down (BA)

Data = 90h

Addr = Block address offset+2 (BA+2)

Block Lock status data

Addr = Block address offset+2 (BA+2)

Confirm locking change on DQ1, DQ0.

(See Block Locking State Transitions Table

for valid combinations.)

Data = FFh

Addr = Block address (BA)

Bus

Operation

Command

Comments

LOCKING OPERATIONS PROCEDURE

LOCK_OP.WMF

Lock

Confirm

Lock

Setup

Read ID Plane

Read

Array

JS28F640P30T85 Datasheet(PDF) 85 Page - Numonyx B.V

JS28F640P30T85 Datasheet(HTML) 85 Page - Numonyx B.V

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