M58LR128HT datasheet(17/112 Pages) STMICROELECTRONICS

17 / 112 page

M58LR128HT, M58LR128HB

Command interface

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Command interface

All Bus Write operations to the memory are interpreted by the Command Interface.

Commands consist of one or more sequential Bus Write operations. An internal

Program/Erase Controller handles all timings and verifies the correct execution of the

program and erase commands. The Program/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

Reset or whenever VDD is lower than VLKO. Command sequences must be followed exactly.

Any invalid combination of commands will be ignored.

Refer to Table 4: Command codes, Table 5: Standard commands, Table 6: Factory

commands, and Appendix D: Command interface state tables, for a summary of the

Command Interface.

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

40h

Program Setup

50h

Clear Status Register

60h

Block Lock Setup, Block Unlock Setup, Block Lock Down Setup and Set

Configuration Register Setup

70h

Read Status Register

80h

Buffer Enhanced Factory Program Setup

90h

Read Electronic Signature

98h

Read CFI Query

B0h

Program/Erase Suspend

BCh

Blank Check Setup

C0h

Protection Register Program

CBh

Blank Check Confirm

D0h

Program/Erase Resume, Block Erase Confirm, Block Unlock Confirm, Buffer

Program or Buffer Enhanced Factory Program Confirm

E8h

Buffer Program

FFh

Read Array

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