M58PR256LE datasheet(107/119 Pages) STMICROELECTRONICS

部件名	M58PR256LE

功能描述	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%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

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) */

M58PR256LE 数据表(PDF) 107 Page - STMicroelectronics

M58PR256LE 数据表(HTML) 107 Page - STMicroelectronics

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