M36W832TE Datasheet, PDF (53/64 Pages) STMicroelectronics – 32 Mbit 2Mb x16, Boot Block Flash Memory and 8 Mbit 512Kb x16 SRAM, Multiple Memory Product

M36W832TE, M36W832BE
APPENDIX C. FLASH MEMORY FLOWCHARTS AND PSEUDO CODES
Figure 26. Program Flowchart and Pseudo Code
Start
Write 40h or 10h
Write Address
& Data
Read Status
Register
program_command (addressToProgram, dataToProgram) {:
writeToFlash (any_address, 0x40) ;
/*or writeToFlash (any_address, 0x10) ; */
writeToFlash (addressToProgram, dataToProgram) ;
/*Memory enters read status state after
the Program Command*/
do {
status_register=readFlash (any_address) ;
/* EF or GF must be toggled*/
NO
b7 = 1
YES
NO
b3 = 0
YES
NO
b4 = 0
YES
NO
b1 = 0
YES
End
VPPF Invalid
Error (1, 2)
Program
Error (1, 2)
Program to Protected
Block Error (1, 2)
} while (status_register.b7== 0) ;
if (status_register.b3==1) /*VPPF invalid error */
error_handler ( ) ;
if (status_register.b4==1) /*program error */
error_handler ( ) ;
if (status_register.b1==1) /*program to protect block error */
error_handler ( ) ;
}
AI90174b
Note: 1. Status check of b1 (Protected Block), b3 (V_PPF Invalid) and b4 (Program Error) can be made after each program operation or after
a sequence.
2. If an error is found, the Status Register must be cleared before further Program/Erase Controller operations.
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