M28W640HCT70N6E NUMONYX, M28W640HCT70N6E Datasheet - Page 30

• Manufacturer Part Number: M28W640HCT70N6E
• Description: TSOP-1 48 12X20 CUSTD FLASH
• Manufacturer: NUMONYX

Status Register
6.7
6.8
Note:
30/72
Block Protection status (bit 1)
The Block Protection status bit can be used to identify if a program or erase operation has
tried to modify the contents of a locked block.
When the Block Protection status bit is High (set to ‘1’), a program or erase operation has
been attempted on a locked block.
Once set High, the Block Protection status bit can only be reset Low by a Clear Status
Register command or a hardware reset. If set High it should be reset before a new
command is issued, otherwise the new command will appear to fail.
Reserved (bit 0)
Bit 0 of the Status Register is reserved. Its value must be masked.
Refer to
Table 11.
1. Logic level '1' is High, '0' is Low.
Bit
7
6
5
4
3
2
1
0
Appendix C: Flowcharts and
Status Register bits
P/E.controller status
Erase Suspend status
Erase status
Program status
V
Program Suspend status
Block Protection status
Reserved
PP
status
Name
(1)
pseudocodes, for using the Status Register.
Logic level
'1'
'0'
'1'
'0'
'1'
'0'
'1'
'0'
'1'
'0'
'1'
'0'
'1'
'0'
Ready
Busy
Suspended
In progress or completed
Erase error
Erase success
Program error
Program success
V
V
Suspended
In progress or completed
Program/Erase on protected Block,
abort
No operation to protected blocks
PP
PP
M28W640HCT, M28W640HCB
invalid, abort
OK
Definition