MT28F320J3 Micron, MT28F320J3 Datasheet - Page 29

• Manufacturer Part Number: MT28F320J3
• Description: Q-FLASHTM MEMORY
• Manufacturer: Micron

128Mb, 64Mb, 32Mb Q-Flash Memory
MT28F640J3_7.p65 – Rev. 6, Pub. 8/02
FULL STATUS CHECK PROCEDURE
Byte/Word Program Flowchart
Read Status Register
Program Successful
Program Complete
Data (see above)
Check if Desired
Write Data and
Read Status
Byte/Word
Full Status
Byte/Word
Write 40h,
Register
Address
Address
SR3 =
SR7 =
SR1 =
SR4 =
Start
1
0
0
0
Figure 5
0
1
1
1
Voltage Range Error
Device Protect Error
Programming Error
29
BUS
OPERATION COMMAND
WRITE
WRITE
READ
STANDBY
BUS
OPERATION COMMAND
STANDBY
STANDBY
STANDBY
Toggling OE# (LOW to HIGH to LOW) updates the status
register. This can be done in place of issuing the READ
STATUS REGISTER command. Repeat for subsequent
programming operations.
After each program operation or after a sequence of
programming operations, an SR full status check can be
done.
Write FFh after the last program operation to place the
device in read array mode.
Toggling OE# (LOW to HIGH to LOW) updates the status
register. This can be done in place of issuing the READ
STATUS REGISTER command. Repeat for subsequent
programming operations.
SR4, SR3, and SR1 are only cleared by the CLEAR STATUS
REGISTER command in cases where multiple locations are
programmed before full status is checked.
If an error is detected, clear the status register before
attempting retry or other error recovery.
Micron Technology, Inc., reserves the right to change products or specifications without notice.
SETUP BYTE/ Data = 40h
WORD
PROGRAM
BYTE/
WORD
PROGRAM
128Mb, 64Mb, 32Mb
Q-FLASH MEMORY
COMMENTS
Addr = Location to be
Data = Data to be
Addr = Location to be
Status Register Data
Check SR7
1 = ISM Ready
0 = ISM Busy
COMMENTS
Check SR3
1 = Programming to
Check SR1
1 = Device Protect Detect
RP# = V
Only required for systems
implemeting lock bit
configuration
Check SR4
1 = Programming Error
Voltage Error Detect
Set
IH
Programmed
Programmed
Programmed
, Block Lock Bit is
©2002, Micron Technology, Inc.