M28W320ECT70N1F データシートの表示（PDF） - STMicroelectronics
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M28W320ECT70N1F Datasheet PDF : 53 Pages
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M28W320ECT, M28W320ECB
The lock status can be monitored for each block
using the Read Electronic Signature command.
Locked-Down blocks revert to the locked (and not
locked-down) state when the device is reset on
power-down. Table. 10 shows the protection sta-
tus after issuing a Block Lock-Down command.
Refer to the section, Block Locking, for a detailed
explanation.
Table 4. Commands
Bus Write Operations
Commands
1st Cycle
2nd Cycle
3rd Cycle
4th Cycle
5th Cycle
Op. Add Data Op. Add Data Op. Add Data Op. Add Data Op. Add Data
Read Memory
Array
1+ Write X FFh Read RA RD
Read Status
Register
1+ Write X 70h Read X SRD
Read Electronic
Signature
1+ Write X
90h Read SA(2) IDh
Read CFI Query 1+ Write X 98h Read QA QD
Erase
2 Write X 20h Write BA D0h
Program
40h
2 Write X or Write PA PD
10h
Double Word
Program(3)
3 Write X 30h Write PA1 PD1 Write PA2 PD2
Quadruple Word
Program(4)
5 Write X 56h(6) Write PA1 PD1 Write PA2 PD2 Write PA3 PD3 Write PA4 PD4
Clear Status
Register
1 Write X 50h
Program/Erase
Suspend
1 Write X B0h
Program/Erase
Resume
1 Write X D0h
Block Lock
2 Write X 60h Write BA 01h
Block Unlock
2 Write X 60h Write BA D0h
Block Lock-Down 2 Write X 60h Write BA 2Fh
Protection
Register Program
2 Write
X
C0h Write PRA PRD
Note: 1. X = Don’t Care, RA=Read Address, RD=Read Data, SRD=Status Register Data, ID=Identifier (Manufacture and Device Code),
QA=Query Address, QD=Query Data, BA=Block Address, PA=Program Address, PD=Program Data, PRA=Protection Register Ad-
dress, PRD=Protection Register Data.
2. The signature addresses are listed in Tables 5, 6 and 7.
3. Program Addresses 1 and 2 must be consecutive Addresses differing only for A0.
4. Program Addresses 1,2,3 and 4 must be consecutive Addresses differing only for A0 and A1.
5. 55h is reserved.
6. To be characterized.
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