M58WR064HT datasheet(17/111 Pages) NUMONYX

17 / 111 page

M58WR064HT, M58WR064HB

Command interface

17/111

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, and Appendix D, Tables 41, 42, 43 and 44, 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 explain 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

56h

Quadruple Word Program Setup

60h

Block Lock Setup, Block Unlock Setup, 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

D0h

Program/Erase Resume, Block Erase Confirm, Bank Erase Confirm, Block

Unlock Confirm or Enhanced Factory Program Confirm

FFh

Read Array

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