M58PR512LE datasheet(107/119 Pages) STMICROELECTRONICS

Teilenummer	M58PR512LE

Bauteilbeschribung	256-Mbit, 512-Mbit or 1-Gbit (횞 16, multiple bank, multilevel, burst) 1.8 V supply Flash memories

PDF	119 Pages

Scroll/Zoom	100%

Hersteller	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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107 / 119 page

M58PR256LE, M58PR512LE, M58PR001LE

Flowcharts and pseudocodes

107/119

Figure 25.

Main array and EFA locking operations flowchart and pseudocode

Any address within the bank can equally be used.

Write

01h, D0h or 2Fh

AI10518

Read Block

Lock States

YES

Locking

change

confirmed?

Start

Write 60h (Main Array)

or 64h (EFA) (1)

locking_operation_command (address, lock_operation) {

/* EFA_locking_operation_command (address, lock_operation) { */

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

/* writeToFlash (address, 0x64) */

/* 60h is the command for Locking Operations on the array while 64h

is the command for Locking Operations on the EFA */

/* 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) */

M58PR512LE Datenblatt(PDF) 107 Page - STMicroelectronics

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