m58bw016db STMicroelectronics, m58bw016db Datasheet - Page 29

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

M58BW016DT, M58BW016DB, M58BW016FT, M58BW016FB
4.4
4.5
Read Status Register command
The Read Status Register command is used to read the Status Register. One Bus Write
cycle is required to issue the Read Status Register command. Once the command is issued
subsequent Bus Read operations read the Status Register until another command is issued.
The Status Register information is present on the output data bus (DQ1-DQ7) when Chip
Enable E and Output Enable G are at V
An interactive update of the Status Register bits is possible by toggling Output Enable or
Output Disable. It is also possible during a program or erase operation, by deactivating the
device with Chip Enable at V
at V
The content of the Status Register may also be read at the completion of a program, erase
or suspend operation. During a Block Erase or Program command, DQ7 indicates the
Program/Erase controller status. It is valid until the operation is completed or suspended.
See the section on the Status Register and
Status Register bits.
Clear Status Register command
The Clear Status Register command can be used to reset bits 1, 3, 4 and 5 in the Status
Register to ‘0’. One Bus Write is required to issue the Clear Status Register command.
Once the command is issued the memory returns to its previous mode, subsequent Bus
Read operations continue to output the same data.
The bits in the Status Register are sticky and do not automatically return to ‘0’ when a new
Program or Erase command is issued. If any error occurs then it is essential to clear any
error bits in the Status Register by issuing the Clear Status Register command before
attempting a new Program, Erase or Resume command.
IL
and Output Disable at V
IH
IH
and then reactivating it with Chip Enable and Output Enable
.
IL
and Output Disable is at V
Table 11
for details on the definitions of the
IH
.
Command interface
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