m58lw064a STMicroelectronics, m58lw064a Datasheet - Page 20

• Manufacturer Part Number: m58lw064a
• Description: 64 Mbit X16 And X16/x32, Block Erase Low Voltage Flash Memories
• Manufacturer: STMicroelectronics

M58LW064A, M58LW064B
Table 13. Status Register Definition
Note: 1. DQ0-DQ6 are High Impedance when DQ7 is indicating that the part is busy. Status Register P/ECS bit7 indicates the P/E. C. status,
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Mnemonic
P/ECS
EPPB
ESS
PSS
ES
PS
2. DQ6 indicates the Erase Suspend Status. On an Erase Suspend instruction P/ECS and ESS bits are set to ’1’. ESS bit remains ’1’
3. Erase Status, ES bit5 is set to ’1’ if the P/E. C. has applied the maximum number of erase pulses to the block without achieving an
4. Program Status, PS bit4 is set to ’1’ if the P/E.C . has failed to program a Word or Double-Word.
5. DQ2 indicates the Program Suspend Status. On a Program Suspend instruction P/ECS and PSS bits are set to ’1’. PSS bit remains
6. DQ1 defines the status of an Erase or Write to Buffer and Program instruction defined in a protected block. RP pin must be held at
7. DQ5 and DQ4 simultaneously at ’1’ after an Erase or Block Unprotect instruction indicates that an improper command was entered.
check during Program or Erase, and on completion before checking bit4 or bit5 for Program or Erase Success.
until an Erase Resume instruction is given.
erase verify.
’1’ until an Program Resume instruction is given.
V
HH
to temporarily override the block protect feature once it has been enabled.
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
DQ
P/E.C. Status
Erase Suspend Status
Erase/Block Unprotect Status
Write to Buffer and Program/Block
Protect Status
Not used
Program Suspend Status
Erase/Write to Buffer and Program in a
Protected Block
Not used
(7)
Function
(7)
1 = Ready
0 = Busy
1 = Block Erase Suspended
0 = Block Erase in Progress/Completed
1 = Error in Block Erase operation or Block
Unprotect
0 = Successful Block Erase operation or Block
Unprotect
1 = Error in Write to Buffer and Program, Block
Protect
0 = Write to Buffer and Program, Block Protect
Completed successfully
1 = Program Suspended
0 = Program operation in Progress/Completed
1 = Error in the defined operation
0 = Operation in Progress/Completed
(4)
(1)
(3)
Status
(6)
(2)
(5)