MT28F320A18 Micron Technology, MT28F320A18 Datasheet - Page 20

• Manufacturer Part Number: MT28F320A18
• Description: FLASH MEMORY
• Manufacturer: Micron Technology

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DataSheet
Notes: 1. Full status register check can be done after each word or after a sequence of words.
2 Meg x 16, 1.8V Enhanced+ Boot Block Flash Memory
MT28F320A18_F.fm – Rev F 08/03 EN
FULL STATUS REGISTER CHECK FLOW
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Issue PROGRAM SETUP
Word Program Passed
Read Status Register
Read Status Register
Issue Word Address
Full Status Register
2. SR3 must be cleared before attempting additional PROGRAM/ERASE operations.
3. SR5 is cleared only by the CLEAR STATUS REGISTER command in cases where multiple blocks are erased before
Check (optional)
and Word Data
Command and
Word Program
Figure 4: Automated Word
Word Address
Completed
Programming Flowchart
full status is checked.
SR7 = 1?
SR1 = 0?
SR3 = 0?
SR4 = 0?
Start
Bits
Bits
YES
YES
YES
YES
1
NO
NO
NO
NO
PROGRAM Attempted
Word Program Failed
on a Locked Block
V
PP
PROGRAM
SUSPEND?
NO
Range Error
1.8V ENHANCED+ BOOT BLOCK FLASH MEMORY
SUSPEND Loop
PROGRAM
YES
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BUS
OPERATION COMMAND
WRITE
WRITE
READ
Standby
Repeat for subsequent words.
Write FFh after the last word programming operation to
return the device to read array mode.
BUS
OPERATION COMMAND
Standby
Standby
Standby
WRITE
PROGRAM
SETUP
WRITE DATA
COMMENTS
Check SR1
1 = Detect locked block
Check SR3
1 = Detect V
Check SR4
1 = Word program error
COMMENTS
Data = 40h or 10h
Addr = Address of word to
Data = Word to be
Addr = Address of word to
Status register data
Toggle OE# or CE# to
update status register.
Check SR7
1 = Ready, 0 = Busy
2 MEG x 16
be programmed
programmed
be programmed
3
©2003 Micron Technology Inc.
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