m58bw016db STMicroelectronics, m58bw016db Datasheet - Page 35

• Manufacturer Part Number: m58bw016db
• Description: 16 Mbit 512kb X32, Boot Block, Burst 3v Supply Flash Memories
• Manufacturer: STMicroelectronics

M58BW016DT, M58BW016DB, M58BW016FT, M58BW016FB
5.3
5.4
5.5
Erase Status (bit 5)
The Erase Status bit can be used to identify if the memory has failed to verify that the block
has erased correctly. The Erase Status bit should be read once the Program/Erase
Controller Status bit is High (Program/Erase controller inactive).
When the Erase Status bit is set to ‘0’, the memory has successfully verified that the block
has erased correctly. When the Erase Status bit is set to ‘1’, the Program/Erase controller
has applied the maximum number of pulses to the block and still failed to verify that the
block has erased correctly.
Once set to ‘1’, the Erase Status bit can only be reset to ‘0’ by a Clear Status Register
command or a hardware reset. If set to ‘1’ it should be reset before a new Program or Erase
command is issued, otherwise the new command will appear to fail.
Program Status (bit 4)
The Program Status bit is used to identify a program failure. Bit4 should be read once the
Program/Erase Controller Status bit is High (Program/Erase controller inactive).
When bit4 is set to ‘0’ the memory has successfully verified that the device has programmed
correctly. When bit4 is set to ‘1’ the device has failed to verify that the data has been
programmed correctly.
Once set to 1’, the Program Status bit can only be reset to ‘0’ by a Clear Status Register
command or a hardware reset. If set to ‘1’ it should be reset before a new Program or Erase
command is issued, otherwise the new command will appear to fail.
V
The V
program and erase operations. The V
or erase operation. Indeterminate results can occur if V
program or erase operation.
When the V
voltage; when the V
Lockout voltage, V
Once set to ‘1’, the V
command or a hardware reset. If set to ‘1’ it should be reset before a new Program or Erase
command is issued, otherwise the new command will appear to fail.
PP
PP
Status (bit 3)
Status bit can be used to identify an invalid voltage on the V
PP
Status bit is set to ‘0’, the voltage on the V
PPLK
PP
PP
Status bit is set to ‘1’, the V
.
Status bit can only be reset to ‘0’ by a Clear Status Register
PP
pin is only sampled at the beginning of a program
PP
pin has a voltage that is below the V
PP
PP
becomes invalid during a fast
pin was sampled at a valid
PP
pin during fast
Status Register
35/70
PP