M58WR064HT datasheet(100/111 Pages) NUMONYX

Part #	M58WR064HT

Description	64 Mbit (4Mb x16, Multiple Bank, Burst) 1.8V supply Flash memories

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Manufacturer	NUMONYX [Numonyx B.V]

Direct Link	http://www.numonyx.com

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100 / 111 page

Flowcharts and pseudo codes

M58WR064HT, M58WR064HB

100/111

Figure 25.

Locking Operations Flowchart and Pseudo Code

1.

Any address within the bank can equally be used.

Write

01h, D0h or 2Fh

AI06176b

Read Block

Lock States

YES

NO

Locking

change

confirmed?

Start

Write 60h (1)

locking_operation_command (address, lock_operation) {

writeToFlash (address, 0x60) ; /*configuration setup*/

/* see note (1) */

if (readFlash (address) ! = locking_state_expected)

error_handler () ;

/*Check the locking state (see Read Block Signature table )*/

writeToFlash (address, 0xFF) ; /*Reset to Read Array mode*/

/*see note (1) */

}

Write FFh (1)

Write 90h (1)

End

if (lock_operation==LOCK) /*to protect the block*/

writeToFlash (address, 0x01) ;

else if (lock_operation==UNLOCK) /*to unprotect the block*/

writeToFlash (address, 0xD0) ;

else if (lock_operation==LOCK-DOWN) /*to lock the block*/

writeToFlash (address, 0x2F) ;

writeToFlash (address, 0x90) ;

/*see note (1) */

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M58WR064HT Datasheet(PDF) 100 Page - Numonyx B.V

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