27LV002CB-70 MCNIX [Macronix International], 27LV002CB-70 Datasheet - Page 37

• Manufacturer Part Number: 27LV002CB-70
• Description: 2M-BIT [256K x 8] CMOS SINGLE VOLTAGE 3V ONLY FLASH MEMORY
• Manufacturer: MCNIX [Macronix International]

Figure 17. IN-SYSTEM SECTOR UNPROTECTION ALGORITHM WITH RESET#=VID
P/N:PM1204
Increment PLSCNT
PLSCNT=1000?
Device failed
No
Yes
MX29LV002C/002NC T/B
No
write 40H to sector address
Remove VID from RESET#
Read from sector address
Chip unprotect complete
Set up first sector address
with A6=1, A1=1, A0=0
with A6=1, A1=1, A0=0
Write reset command
Verify chip unprotect
A6=1, A1=1, A0=0
Chip unprotect :
write 60H with
RESET#=VID
Cycle=60H ?
Wait 50ms
Data=00H
Last sector
First Write
protected?
PLSCNT=1
All sector
START
verified?
37
Wait 1us
Yes
Yes
Yes
No
?
Yes
No
No
Set up next sector address
Protect all sectors
Temporary Sector
Unprotect Mode
REV. 1.0, JUN. 30, 2005