PF38F5070M0P0B NUMONYX [Numonyx B.V], PF38F5070M0P0B Datasheet - Page 76

• Manufacturer Part Number: PF38F5070M0P0B
• Description: Numonyx Wireless Flash Memory (W18)
• Manufacturer: NUMONYX [Numonyx B.V]

Figure 33: Protection Register Programming Flowchart
Datasheet
76
Addr=Prot addr
Address / Data
Write Protect.
Read Status
SR[7] = 1?
Read SRD
Successful
Full Status
(if desired)
Write C0h
Complete
SR[4:3] =
SR[4,1] =
SR[4,1] =
Program
Program
Register
Register
Check
Start
Yes
No
1,1
1,0
1,1
Programming Error
Program Aborted
PROTECTION REGISTER PROGRAMMING PROCEDURE
V
Locked-Register
PP
Range Error
FULL STATUS CHECK PROCEDURE
Operation
Operation
Protection Program operations addresses must be within the
protection register address space. Addresses outside this
space will return an error.
Repeat for subsequent programming operations.
Full status register check can be done after each program or
after a sequence of program operations.
SR[3] MUST be cleared before the WSM will allow further
program attempts.
Only the Clear Staus Register command clears SR[4:3,1].
If an error is detected, clear the status register before
attempting a program retry or other error recovery.
Standby
Standby
Standby
Standby
Write
Write
Read
Bus
Bus
Command
Command
Protection
Protection
Program
Program
Numonyx™ Wireless Flash Memory (W18)
Numonyx™ Wireless Flash Memory (W18)
Setup
Data = C0h
Addr = Protection address
Data = Data to program
Addr = Protection address
Read SRD
Toggle CE# or OE# to update SRD
Check SR[7]
1 = WSM Ready
0 = WSM Busy
SR[1] SR[3] SR[4]
0
0
1
1
0
0
Order Number: 290701-18
Comments
Comments
1
1
1
V
Protection register
program error
Register locked;
Operation aborted
PP
Error
November 2007