PF38F5070M0Q0B0 NUMONYX [Numonyx B.V], PF38F5070M0Q0B0 Datasheet - Page 77

• Manufacturer Part Number: PF38F5070M0Q0B0
• Manufacturer: NUMONYX [Numonyx B.V]

Numonyx™ StrataFlash
Table 29: Status Register Bit Definitions (Sheet 2 of 2)
9.1.1
Table 30: Clear Status Register Command Bus Cycles
Note:
9.2
April 2008
309823-10
Status Register (SR) Bits
Clear Status Register
Reserved
15-10
Bit
2
1
0
Command
Program
Program Suspend Status
Block-Locked Error
Partition Status
Region
Status
9-8
Clearing the Status Register
The Status Register (SR) contain status and error bits which are set by the device. SR
status bits are cleared by the device; however, SR error bits are cleared by issuing the
Clear Status Register command. Resetting the device also clears the Status Register.
Depending on the current state of the partition, issuing the Clear Status Command will
place the addressed partition in Read Status mode. Please see 'Next State' Table for
further details. Other partitions are not affected.
Care should be taken to avoid Status Register ambiguity. If a command sequence error
occurs while in an Erase Suspend condition, the Status Register will indicate a
Command Sequence error by setting SR4 and SR5. When the erase operation is
resumed (and finishes), any errors that may have occurred during the erase operation
will be masked by the Command Sequence error. To avoid this situation, clear the
Status Register prior to resuming a suspended erase operation.
The Clear Status Register command functions independent of the voltage level on VPP.
Read Configuration Register
The Read Configuration Register (RCR) is a 16-bit read/write register used to select
bus-read modes, and to configure synchronous-burst read characteristics of the flash
device. All Read Configuration Register bits are set and cleared using the Program Read
Configuration Register command.
®
Status
Ready
Name
Cellular Memory (M18)
7
Suspend
Status
Erase
Device Address
6
Address Bus
0
1
0
1
SR7
0
0
1
1
Erase
Setup Write Cycle
Error
= Program suspend not in effect.
= Program suspend in effect.
= Block NOT locked during program or erase - operation successful.
= Block locked during program or erase - operation aborted.
5
SR0
0
1
0
1
= Active program or erase operation in addressed partition.
= Active program or erase operation in other partition.
= No active program or erase operation in any partition.
= Reserved.
Program
BEFP: Program or Verify complete, or Ready for data.
BEFP: Program or Verify in progress.
BEFP: Operation complete
Error
0050h
4
Data Bus
Program
Voltage
/Erase
Error
3
Description
---
Program
Suspend
Address Bus
Status
2
Confirm Write Cycle
Locked
Block-
Error
Default Value = 0080h
1
---
Data Bus
Partition
Status
Datasheet
0
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