M29W320FT70N3E NUMONYX, M29W320FT70N3E Datasheet - Page 20

• Manufacturer Part Number: M29W320FT70N3E
• Description: IC FLASH 32MB 70NS 48TSOP AUTO
• Manufacturer: NUMONYX

Specifications of M29W320FT70N3E

• Format - Memory: FLASH
• Memory Type: FLASH - Nor
• Memory Size: 32M (4Mx8, 2Mx16)
• Speed: 70ns
• Interface: Parallel
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 48-TSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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Chip Erase command
The Chip Erase command can be used to erase the entire chip. Six Bus Write operations
are required to issue the Chip Erase command and start the Program/Erase controller.
If any blocks are protected then these are ignored and all the other blocks are erased. If all
of the blocks are protected the Chip Erase operation appears to start but will terminate
within about 100 μs, leaving the data unchanged. No error condition is given when protected
blocks are ignored.
During the erase operation the memory will ignore all commands. It is not possible to issue
any command to abort the operation. Typical chip erase times are given in
Read operations during the Chip Erase operation will output the Status Register on the Data
inputs/outputs. See the section on the Status Register for more details.
After the Chip Erase operation has completed the memory will return to the Read mode,
unless an error has occurred. When an error occurs the memory will continue to output the
Status Register. A Read/Reset command must be issued to reset the error condition and
return to Read mode.
The Chip Erase command sets all of the bits in unprotected blocks of the memory to ’1’. All
previous data is lost.
Block Erase command
The Block Erase command can be used to erase a list of one or more blocks. Six Bus Write
operations are required to select the first block in the list. Each additional block in the list can
be selected by repeating the sixth Bus Write operation using the address of the additional
block. The Block Erase operation starts the Program/Erase controller about 50 μs after the
last Bus Write operation. Once the Program/Erase controller starts it is not possible to select
any more blocks. Each additional block must therefore be selected within 50 μs of the last
block. The 50 μs timer restarts when an additional block is selected. The Status Register
can be read after the sixth Bus Write operation. See the Status Register section for details
on how to identify if the Program/Erase controller has started the Block Erase operation.
If any selected blocks are protected then these are ignored and all the other selected blocks
are erased. If all of the selected blocks are protected the Block Erase operation appears to
start but will terminate within about 100 μs, leaving the data unchanged. No error condition
is given when protected blocks are ignored.
During the Block Erase operation the memory will ignore all commands except the Erase
Suspend command. Typical block erase times are given in
during the Block Erase operation will output the Status Register on the Data inputs/outputs.
See the section on the Status Register for more details.
After the Block Erase operation has completed the memory will return to the Read mode,
unless an error has occurred. When an error occurs the memory will continue to output the
Status Register. A Read/Reset command must be issued to reset the error condition and
return to Read mode.
The Block Erase command sets all of the bits in the unprotected selected blocks to ’1’. All
previous data in the selected blocks is lost.
Table
6. All Bus Read operations
Table
6. All Bus