MT28F004B5-1 Micron, MT28F004B5-1 Datasheet - Page 17
MT28F004B5-1
Manufacturer Part Number
MT28F004B5-1
Description
FLASH MEMORY
Manufacturer
Micron
Datasheet
1.MT28F004B5-1.pdf
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Notes: 1. Sequence may be repeated to erase additional blocks.
4Mb Smart 5 Boot Block Flash Memory
MT28F004B5_3.fm - Rev. 3, Pub. 8/2002
Self-Timed BLOCK ERASE Sequence
STATUS REGISTER
ERASE Complete
Check (optional)
Complete Status
2. Complete status check is not required. However, if SR3 = 1, further ERASEs are inhibited until the status register
3. To return to the array read mode, the FFh command must be issued.
4. Refer to the ERASE SUSPEND flowchart for more information.
5. If SR3 is set during a WRITE or BLOCK ERASE attempt, CLEAR STATUS REGISTER must be issued before further
6. Status register bits 3-5 must be cleared using CLEAR STATUS REGISTER.
Block Address
WRITE D0h,
WRITE 20h
SR7 = 1?
V
is cleared.
WRITE or ERASE operations are allowed by the CEL.
READ
Start
PP
= 5V
YES
2
3
NO
Suspend ERASE?
YES
Sequence
Suspend
NO
ERASE Resumed
4
SMART 5 BOOT BLOCK FLASH MEMORY
1
17
Start (ERASE completed)
ERASE Successful
STATUS-CHECK Sequence
SR4, 5 = 1?
Complete BLOCK ERASE
SR3 = 0?
SR5 = 0?
YES
YES
NO
YES
NO
NO
V
Command Sequence Error
BLOCK ERASE Error
PP
Error
©2002, Micron Technology Inc.
5, 6
4Mb
6
6
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