M58WR064EB80ZB6 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M58WR064EB80ZB6

64 Mbit (4Mb x 16, Multiple Bank, Burst) 1.8V Supply Flash Memory

STMicroelectronics 

Figure 27. Locking Operations Flowchart and Pseudo Code

M58WR064ET, M58WR064EB

Start

Write 60h (1)

Write

01h, D0h or 2Fh

Write 90h (1)

locking_operation_command (address, lock_operation) {

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

/* see note (1) */

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) */

Read Block

Lock States

Locking

NO

change

confirmed?

if (readFlash (address) ! = locking_state_expected)

error_handler () ;

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

YES

Write FFh (1)

End

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

/*see note (1) */

}

Note: 1. Any address within the bank can equally be used.

AI06176b

71/82

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