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M750000004 Datasheet(PDF) 59 Page - SPANSION

No. de pieza M750000004
Descripción Electrónicos  128 Megabit (8 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Read/Write Flash Memory
PDF  129 Pages
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M750000004 Datasheet(HTML) 59 Page - SPANSION

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January 14, 2004
Am75PDL191CHHa/Am75PDL193CHHa
57
ADV ANCE
I N FO RMAT I O N
Legend:
DYB = Dynamic Protection Bit
OW = Address (A7:A0) is (00011010)
PD[3:0] = Password Data (1 of 4 portions)
PPB = Persistent Protection Bit
PWA = Password Address. A1:A0 selects portion of password.
PWD = Password Data being verified.
PL = Password Protection Mode Lock Address (A7:A0) is (00001010)
RD(0) = Read Data DQ0 for protection indicator bit.
RD(1) = Read Data DQ1 for PPB Lock status.
SA = Sector Address where security command applies. Address bits
A21:A12 uniquely select any sector.
SL = Persistent Protection Mode Lock Address (A7:A0) is (00010010)
WP = PPB Address (A7:A0) is (00000010) (NoteTable.16
30897a1.fm)
X = Don’t care
PPMLB = Password Protection Mode Locking Bit
SPMLB = Persistent Protection Mode Locking Bit
1.
See Table 1 for description of bus operations.
2.
All values are in hexadecimal.
3.
Shaded cells in table denote read cycles. All other cycles are
write operations.
4.
During unlock and command cycles, when lower address bits are
555 or 2AAh as shown in table, address bits higher than A11
(except where BA is required) and data bits higher than DQ7 are
don’t cares.
5.
The reset command returns device to reading array.
6.
Cycle 4 programs the addressed locking bit. Cycles 5 and 6
validate bit has been fully programmed when DQ0 = 1. If DQ0 = 0
in cycle 6, program command must be issued and verified again.
7.
Data is latched on the rising edge of WE#.
8.
Entire command sequence must be entered for each portion of
password.
9.
Command sequence returns FFh if PPMLB is set.
10. The password is written over four consecutive cycles, at
addresses 0-3.
11. A 2 µs timeout is required between any two portions of password.
12. A 100 µs timeout is required between cycles 4 and 5.
13. A 1.2 ms timeout is required between cycles 4 and 5.
14. Cycle 4 erases all PPBs. Cycles 5 and 6 validate bits have been
fully erased when DQ0 = 0. If DQ0 = 1 in cycle 6, erase command
must be issued and verified again. Before issuing erase
command, all PPBs should be programmed to prevent PPB
overerasure.
15. DQ1 = 1 if PPB locked, 0 if unlocked.
16. For PDL128G and PDL640G, the WP address is 0111010. The
EP address (PPB Erase Address) is 1111010.
17. Following the final cycle of the command sequence, the user must
write the first three cycles of the Autoselect command and then
write a Reset command.
18. If checking the DYB status of sectors in multiple banks, the user
must follow Note 17 before crossing a bank boundary.
Table 17.
Sector Protection Command Definitions
Command
(Notes)
Bus Cycles (Notes 1-4)
Addr Data Addr Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Reset
1
XXX
F0
SecSi Sector Entry 3
555
AA
2AA
55
555
88
SecSi Sector Exit
4
555
AA
2AA
55
555
90
XX
00
SecSi Protection
Bit Program (5, 6)
6
555
AA
2AA
55
555
60
OW
68
OW
48
OW
RD(0)
SecSi Protection
Bit Status
5
555
AA
2AA
55
555
60
OW
48
OW
RD(0)
Password Program
(5, 7, 8)
4
555
AA
2AA
55
555
38
XX[0-3]
PD[0-3]
Password Verify (6,
8, 9)
4
555
AA
2AA
55
555
C8
PWA[0-3]
PWD[0-3]
Password Unlock
(7, 10, 11)
7
555
AA
2AA
55
555
28
PWA[0]
PWD[0]
PWA[1]
PWD[1]
PWA[2]
PWD[2]
PWA[3]
PWD[3]
PPB Program (5, 6,
12, 17)
6
555
AA
2AA
55
555
60
(SA)WP
68
(SA)WP
48
(SA)WP
RD(0)
PPB Status
5
555
AA
2AA
55
555
60
(SA)WP
48
(SA)WP
RD (0)
All PPB Erase (5,
6, 13, 14)
6
555
AA
2AA
55
555
60
WP
60
(SA)
40
(SA)WP
RD(0)
PPB Lock Bit Set
(17)
3
555
AA
2AA
55
555
78
PPB Lock Bit
Status (15)
4
555
AA
2AA
55
555
58
SA
RD(1)
DYB Write (7)
4
555
AA
2AA
55
555
48
SA
X1
DYB Erase (7)
4
555
AA
2AA
55
555
48
SA
X0
DYB Status (6, 18) 4
555
AA
2AA
55
555
58
SA
RD(0)
PPMLB Program
(5, 6, 12)
6
555
AA
2AA
55
555
60
PL
68
PL
48
PL
RD(0)
PPMLB Status (5)
5
555
AA
2AA
55
555
60
PL
48
PL
RD(0)
SPMLB Program
(5, 6, 12)
6
555
AA
2AA
55
555
60
SL
68
SL
48
SL
RD(0)
SPMLB Status (5)
5
555
AA
2AA
55
555
60
SL
48
SL
RD(0)



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