M36W432BG ST Microelectronics, M36W432BG Datasheet - Page 62
M36W432BG
Manufacturer Part Number
M36W432BG
Description
32 Mbit 2Mb x16 / Boot Block Flash Memory and 4 Mbit 256Kb x16 SRAM / Multiple Memory Product
Manufacturer
ST Microelectronics
Datasheet
1.M36W432BG.pdf
(66 pages)
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M36W432TG, M36W432BG
Figure 32. Protection Register Program Flowchart and Pseudo Code
Note: 1. Status check of b1 (Protected Block), b3 (V
62/66
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
Error (1, 2)
Error (1, 2)
PPF
Program
Invalid
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
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) ;
/* E
F
or G
F
must be toggled*/
PPF
invalid error */
AI07938
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