PF38F5070M0P0B NUMONYX [Numonyx B.V], PF38F5070M0P0B Datasheet - Page 67

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

Numonyx™ Wireless Flash Memory (W18)
Figure 29: Erase Suspend / Resume Flowchart
12.2
November 2007
Order Number: 290701-18
Block Erase
The 2-cycle block erase command sequence, consisting of Erase Setup (20h) and Erase
Confirm (D0h), initiates one block erase at the addressed block. Only one partition can
be in an erase mode at a time; other partitions must be in a read mode. The Erase
Confirm command internally latches the address of the block to be erased. Erase forces
all bits within the block to 1. SR[7] is cleared while the erase executes.
After writing the Erase Confirm command, the selected partition is placed in read
Status Register mode and reads performed to that partition return the current status
data. The address given during the Erase Confirm command does not need to be the
same address used in the Erase Setup command. So, if the Erase Confirm command is
given to partition B, then the selected block in partition B will be erased even if the
Erase Setup command was to partition A.
Read Array
Data
Read
Erase Resumed
Same Partition
Same Partition
Any Address
Any Address
Erase
Read Status
Erase
Read
Read
Write B0h
Write D0h
Program?
Write 70h
Write 70h
Register
Read or
SR.7 =
SR.6 =
Done?
Start
1
1
No
Yes
Suspend
Resume
Status
Status
Program
0
0
Program
Loop
ERASE SUSPEND / RESUME PROCEDURE
Erased Partition
Read
Read Array
Completed
Write FFh
Erase
Data
Array
Operation
Standby
Standby
Read or
Write
Write
Read
Write
Write
Write
Write
Bus
If the suspended partition was placed in
Read Array
Command
or Program
Read Array mode or a Program Loop:
Suspend
Program
Resume
Status
Status
Erase
Read
Read
Data = B0h
Addr = Any address
Data = 70h
Addr = Same partition
Status register data. Toggle CE# or
OE# to update Status register
Addr = Same partition
Check SR.7
1 = WSM ready
0 = WSM busy
Check SR.6
1 = Erase suspended
0 = Erase completed
Data = FFh or 40h
Addr = Block to program or read
Read array or program data from/to
block other than the one being erased
Data = D0h
Addr = Any address
Return partition to Status mode:
Data = 70h
Addr = Same partition
Comments
ERAS_SUS.WMF
Datasheet
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