MX29LV033A ETC-unknow, MX29LV033A Datasheet - Page 41

• Manufacturer Part Number: MX29LV033A
• Description: 32m-bit [4m X 8] Cmos Equal Sector Flash Memory
• Manufacturer: ETC-unknow

Figure 18. IN-SYSTEM SECTOR GROUP PROTECT/CHIP UNPROTECTED ALGORITHMS WITH RESET#=VID
P/N:PM1017
Note:
1. If TA range during 0 C to 70 C, the time out timing is 15ms.
If TA range during -40 C to 85 C, the time out timing is 18ms.
Sector Protect
Increment PLSCNT
Temporary Sector
Unprotect Mode
Algorithm
PLSCNT=25?
Device failed
Yes
No
No
No
Remove VID from RESET#
Sector Protect complete
Write reset command
Verify Sector Protect:
Set up sector address
Write 60h to sector
A6=0, A1=1, A0=0
Write 40h to sector
A6=0, A1=1, A0=0
A6=0, A1=1, A0=0
Protect another
Sector Protect:
sector address
Wait 150us
address with
address with
Cycle=60h?
Data=01h?
RESET#=VID
Wait 1us
PLSCNT=1
Read from
First Write
sector?
START
with
Yes
Yes
No
Yes
PLSCNT=1
Reset
the sector protect algorithm
for all unprotected sectors
sector unprotect address
The indicated portion of
prior to issuing the first
41
must be performed
Protect all sectors:
Sector Unprotect
Increment PLSCNT
PLSCNT=1000?
Algorithm
Device failed
No
Yes
MX29LV033A
No
No
Remove VID from RESET#
Sector Unprotect complete
Set up first sector address
Verify Sector Unprotect:
Time out timing (note 1)
Write reset command
Write 60h to sector
Write 40h to sector
A6=1, A1=1, A0=0
A6=1, A1=1, A0=0
A6=1, A1=1, A0=0
Sector Unprotect:
sector address
address with
address with
Cycle=60h?
Last sector
RESET#=VID
Wait 1us
PLSCNT=1
First Write
All sectors
protected?
Read from
Data=00h?
verified?
START
with
Yes
Yes
Yes
Yes
No
No
REV. 1.0, SEP. 20, 2004
PLSCNT=1
Temporary Sector
Unprotect Mode
Reset