AM29LV320DT90EI AMD (ADVANCED MICRO DEVICES), AM29LV320DT90EI Datasheet - Page 19
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AM29LV320DT90EI
Manufacturer Part Number
AM29LV320DT90EI
Description
Flash Memory IC
Manufacturer
AMD (ADVANCED MICRO DEVICES)
Datasheets
1.AM29LV320DT90EI.pdf
(55 pages)
2.AM29LV320DT90EI.pdf
(55 pages)
3.AM29LV320DT90EI.pdf
(57 pages)
Specifications of AM29LV320DT90EI
Memory Configuration
4M X 8 / 2M X 16 Bit
Package/case
48-TSOP
Supply Voltage Max
3.6V
Leaded Process Compatible
No
Peak Reflow Compatible (260 C)
No
Access Time, Tacc
90nS
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
November 15, 2004
Sector Protect
Temporary Sector
Unprotect Mode
Algorithm
Device failed
Increment
PLSCNT
PLSCNT
= 25?
No
Yes
No
No
Figure 2. In-System Sector Protect/Unprotect Algorithms
Write 60h to sector
Protect: Write 40h
to sector address
A6 = 0, A1 = 1,
Sector Protect:
Protect another
RESET# = V
sector address
A1 = 1, A0 = 0
A1 = 1, A0 = 0
Sector Protect
from RESET#
Verify Sector
Set up sector
PLSCNT = 1
Cycle = 60h?
address with
Remove V
with A6 = 0,
with A6 = 0,
Wait 150 µs
Data = 01h?
Write reset
Read from
First Write
command
Wait 1 µs
complete
address
START
sector?
A0 = 0
Yes
Yes
No
ID
ID
Yes
PLSCNT = 1
Reset
Am29LV320D
The indicated portion
unprotected sectors
Protect all sectors:
of the sector protect
prior to issuing the
unprotect address
algorithm must be
performed for all
Sector Unprotect
first sector
Algorithm
Device failed
Increment
PLSCNT
PLSCNT
= 1000?
Yes
No
No
No
Write 60h to sector
Set up first sector
Sector Unprotect:
Unprotect: Write
Sector Unprotect
A6 = 1, A1 = 1,
A6 = 1, A1 = 1,
sector address
RESET# = V
A1 = 1, A0 = 0
from RESET#
Verify Sector
40h to sector
address with
PLSCNT = 1
Cycle = 60h?
Remove V
address with
with A6 = 1,
Data = 00h?
Wait 15 ms
Write reset
Read from
First Write
Last sector
protected?
command
Wait 1 µs
All sectors
complete
address
verified?
START
A0 = 0
A0 = 0
Yes
Yes
Yes
Yes
ID
ID
No
No
Temporary Sector
Unprotect Mode
next sector
address
Set up
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