AM29LV320DT90EI AMD (ADVANCED MICRO DEVICES), AM29LV320DT90EI Datasheet - Page 21
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
December 14, 2005
Sector Protect
Temporary Sector
Unprotect Mode
Algorithm
Device failed
Increment
PLSCNT
PLSCNT
= 25?
No
Yes
No
No
Write 60h to sector
Protect: Write 40h
to sector address
A6 = 0, A1 = 1,
Protect another
Sector Protect:
sector address
RESET# = V
A1 = 1, A0 = 0
A1 = 1, A0 = 0
Sector Protect
from RESET#
Set up sector
Verify Sector
Cycle = 60h?
Remove V
PLSCNT = 1
address with
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?
Figure 2. In-System Sector Protect/Unprotect Algorithms
A0 = 0
Yes
No
Yes
ID
ID
Yes
PLSCNT = 1
Reset
D A T A S H E E T
Am29LV320D
The indicated portion
Protect all sectors:
unprotected 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
Verify Sector
40h to sector
from RESET#
address with
Cycle = 60h?
Remove V
PLSCNT = 1
address with
with A6 = 1,
Data = 00h?
Wait 15 ms
Write reset
Read from
First Write
Last sector
command
Wait 1 μs
All sectors
protected?
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
19