RC28F640P33B85 Numonyx, RC28F640P33B85 Datasheet - Page 75

• Manufacturer Part Number: RC28F640P33B85
• Description: Numonyx? Strataflash Embedded Memory
• Manufacturer: Numonyx

Numonyx™ StrataFlash
Figure 39: Block Lock Operations Flowchart
November 2007
Order Number: 314749-05
Read Block Lock
Write 01 ,D0,2Fh
Block Address
Block Address
Lock Change
Any Address
Read
Lock
Lock
Read ID Plane
Write FFh
Write 60h
Write 90h
Complete
Change ?
Locking
Status
Start
Setup
Confirm
Yes
Array
®
Embedded Memory (P33)
No
LOCKING OPERATIONS PROCEDURE
Operation
(Optional)
(Optional)
(Optional)
Standby
Write
Write
Write
Read
Write
Bus
Command
Block Lock
Unlock, or
Lockdown
Read ID
Confirm
Status
Setup
Plane
Lock,
Read
Array
Lock
Data = 60h
Addr = Block to lock/unlock/lock-down (BA)
Data = 01h (Lock 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 DQ
(See Block Locking State Transitions Table
for valid combinations.)
Data = FFh
Addr = Block address (BA)
D0h (Unlock block)
2Fh (Lockdown block)
Comments
1
, DQ
LOCK_OP.WMF
0
.
Datasheet
75