m36w832te STMicroelectronics, m36w832te Datasheet - Page 60

• Manufacturer Part Number: m36w832te
• Description: 32 Mbit 2mb X16, Boot Block Flash Memory And 8 Mbit 512kb X16 Sram, Multiple Memory Product
• Manufacturer: STMicroelectronics

M36W832TE, M36W832BE
Figure 33. Protection Register Program Flowchart and Pseudo Code
Note: 1. Status check of b1 (Protected Block), b3 (V
60/64
2. If an error is found, the Status Register must be cleared before further Program/Erase Controller operations.
a sequence.
Write Address
Read Status
Write C0h
Register
& Data
b7 = 1
b3 = 0
b4 = 0
b1 = 0
Start
End
YES
YES
YES
YES
NO
NO
NO
NO
Program to Protected
Block Error (1, 2)
V PPF Invalid
Error (1, 2)
Error (1, 2)
Program
PPF
protection_register_program_command (addressToProgram, dataToProgram) {:
Invalid) and b4 (Program Error) can be made after each program operation or after
if (status_register.b3==1) /*V PPF invalid error */
if (status_register.b4==1) /*program error */
if (status_register.b1==1) /*program to protect block error */
}
do {
error_handler ( ) ;
error_handler ( ) ;
error_handler ( ) ;
writeToFlash (addressToProgram, dataToProgram) ;
/*Memory enters read status state after
the Program Command*/
} while (status_register.b7== 0) ;
writeToFlash (any_address, 0xC0) ;
status_register=readFlash (any_address) ;
/* EF or GF must be toggled*/
AI07951