M58WR064 データシートの表示（PDF） - STMicroelectronics
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M58WR064 Datasheet PDF : 81 Pages
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M58WR064T, M58WR064B
COMMAND INTERFACE
All Bus Write operations to the memory are inter-
preted by the Command Interface. Commands
consist of one or more sequential Bus Write oper-
ations. An internal Program/Erase Controller han-
dles all timings and verifies the correct execution
of the Program and Erase commands. The Pro-
gram/Erase Controller provides a Status Register
whose output may be read at any time to monitor
the progress or the result of the operation.
The Command Interface is reset to read mode
when power is first applied, when exiting from Re-
set or whenever VDD is lower than VLKO. Com-
mand sequences must be followed exactly. Any
invalid combination of commands will reset the de-
vice to read mode.
Refer to Table 4, Command Codes and Appendix
D, Tables 40, 41, 42 and 43, Command Interface
States - Modify and Lock Tables, for a summary of
the Command Interface.
The Command Interface is split into two types of
commands: Standard commands and Factory
Program commands. The following sections ex-
plain in detail how to perform each command.
Table 4. Command Codes
Hex Code
Command
01h
Block Lock Confirm
03h
Set Configuration Register Confirm
10h
Alternative Program Setup
20h
Block Erase Setup
2Fh
Block Lock-Down Confirm
30h
Enhanced Factory Program Setup
35h
Double Word Program Setup
40h
Program Setup
50h
Clear Status Register
55h
Quadruple Word Program Setup
Block Lock Setup, Block Unlock Setup,
60h
Block Lock Down Setup and Set
Configuration Register Setup
70h
Read Status Register
75h
Quadruple Enhanced Factory Program
Setup
80h
Bank Erase Setup
90h
Read Electronic Signature
98h
Read CFI Query
B0h
Program/Erase Suspend
C0h
Protection Register Program
Program/Erase Resume, Block Erase
D0h
Confirm, Bank Erase Confirm, Block
Unlock Confirm or Enhanced Factory
Program Confirm
FFh
Read Array
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