FW912 Micron Semiconductor Products, FW912 Datasheet - Page 12

• Manufacturer Part Number: FW912
• Description: Flash Memory Technology
• Manufacturer: Micron Semiconductor Products

4 Meg x 16 Async/Page/Burst Flash Memory
MT28F642D18_3.p65 – Rev. 3, Pub. 8/02
CODE DEVICE MODE
D0h
D0h
D1h
C0h
FFh
01h
03h
2Fh
00h
Program Device
Protection Register
Lock Device
Protection Register
Erase Confirm
Program/Erase/
Check Block Erase
Resume
Read Array
Lock Block
Read Configuration
Register Data
Lock Down
Unlock Block
Check Block
Erase Confirm
Invalid/Reserved
BUS CYCLE
Second
Second
Second
Second
Second
Second
First
First
First
First
Command Descriptions (continued)
Writes a specific code into the device protection register.
previously suspended, this command will resume the operation.
During read array mode, array data will be output on the data bus.
address latches and check to see that the block is completely erased.
Locks the device protection register; data can no longer be changed.
If the previous command was an ERASE SETUP command, then the
CSM will close the address and data latches, and it will begin erasing
the block indicated on the address balls. During programming/erase,
the device will respond only to the READ STATUS REGISTER,
PROGRAM SUSPEND, or ERASE SUSPEND command. It will output
status register data on the rising edge of ADV#, or on the rising clock
edge when ADV# is LOW during synchronous burst mode, or on the
falling edge of OE# or CE#, whichever occurs last.
If a PROGRAM, ERASE or CHECK BLOCK ERASE operation was
If the previous command was PROTECTION CONFIGURATION SETUP,
the CSM will latch the address and lock the block indicated on the
address bus.
If the previous command was SET READ CONFIGURATION REGISTER,
the configuration bits presented on the address bus will be stored
into the read configuration register.
If the previous command was PROTECTION CONFIGURATION SETUP,
the CSM will latch the address and lock down the block indicated on
the address bus.
If the previous command was PROTECTION CONFIGURATION SETUP,
the CSM will latch the address and unlock the block indicated on the
address bus. If the block had been previously set to lock down, this
operation will have no effect.
If the previous command was ERASE SETUP, the CSM will close the
Unassigned command that should not be used.
Table 5
ASYNC/PAGE/BURST FLASH MEMORY
12
Micron Technology, Inc., reserves the right to change products or specifications without notice.
DESCRIPTION
4 MEG x 16
©2002, Micron Technology, Inc.
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