m58lt256jsb STMicroelectronics, m58lt256jsb Datasheet - Page 96

• Manufacturer Part Number: m58lt256jsb
• Description: 256 Mbit 16 Mb 16, Multiple Bank, Multilevel, Burst 1.8 V Supply, Secure Flash Memories
• Manufacturer: STMicroelectronics

Flowcharts and pseudocodes
Figure 26. Protection Register program flowchart and pseudocode
1. Status check of SR1 (Protected Block), SR3 (V
2. If an error is found, the Status Register must be cleared before further Program/Erase Controller operations.
3. Any address within the bank can equally be used.
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operation or after a sequence.
Write C0h (3)
Write Address
Read Status
Register (3)
SR7 = 1
SR3 = 0
SR4 = 0
SR1 = 0
& Data
Start
End
YES
YES
YES
YES
NO
NO
NO
NO
Program to Protected
Block Error (1, 2)
V PP Invalid
Error (1, 2)
Error (1, 2)
Program
protection_register_program_command (addressToProgram, dataToProgram) {:
PP
Invalid) and SR4 (Program Error) can be made after each program
if (status_register.SR3==1) /*VPP invalid error */
if (status_register.SR4==1) /*program error */
if (status_register.SR1==1) /*program to protect block error */
}
do {
error_handler ( ) ;
error_handler ( ) ;
error_handler ( ) ;
writeToFlash (addressToProgram, 0xC0) ;
writeToFlash (addressToProgram, dataToProgram) ;
/*Memory enters read status state after
the Program Command*/
} while (status_register.SR7== 0) ;
status_register=readFlash (addressToProgram) ;
/* E or G must be toggled*/
/*see note (3) */
M58LT256JST, M58LT256JSB
/* see note (3) */
AI06177b