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A82DL3244UG-70U Datasheet

  • A82DL3244UG-70U

  • Stacked Multi-Chip Package (MCP) Flash Memory and SRAM, A82D...

  • 932.05KB

  • 60页

  • AMICC

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A82DL32x4T(U) Series
START
Protect all sectors:
The indicated portion of
the sector protect
algorithm must be
performed for all
unprotected sectors prior
to issuing the first sector
unprotect address
START
PLSCNT=1
PLSCNT=1
RESET=V
ID
RESET=V
ID
Wait 1 us
Wait 1 us
Temporary Sector
Unprotect Mode
No
First Write
Cycle=60h?
Yes
Set up sector
address
No
First Write
Cycle=60h?
Yes
All sectors
protected?
Yes
Set up first sector
address
No
Temporary Sector
Unprotect Mode
Sector Protect:
Write 60h to sector
address with A6=0,
A1=1, A0=0
Wait 150 us
Verify Sector
Protect: Write 40h
to sector address
with A6=0, A1=1,
A0=0
Sector Unprotect:
Write 60h to sector
address with A6=1,
A1=1, A0=0
Reset
PLSCNT=1
Increment
PLSCNT
Wait 15 ms
Verify Sector
Unprotect : Write
40h to sector
address with A6=1,
A1=1, A0=0
Read from
sector address
with A6=0,
A1=1, A0=0
No
PLSCNT
=25?
Yes
Device failed
No
Data=01h?**
Increment
PLSCNT
Read from sector
address with A6=1,
A1=1, A0=0
No
Set up
next sector
address
Yes
Protect another
sector?
No
Remove V
ID
from RESET
Write reset
command
Yes
PLSCNT=
1000?
No
Data=00h?**
Yes
Device failed
Yes
Last sector
verified?
Yes
Remove V
ID
from RESET
No
Sector Protect
Algorithm
Sector Protect
complete
Sector Unprotect
Algorithm
Write reset
Command
Sector Unprotect
complete
Note: The term 鈥渟ector鈥?in the figure applies to both sectors and sector blocks
* No other command is allowed during this process
** Read access time is 200ns-300ns
Figure 2-1. High Voltage Sector/Sector Block Protection and Unprotection Algorithms
PRELIMINARY
(August, 2005, Version 0.0)
20
AMIC Technology, Corp.

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