datasheetbank_Logo
Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site

ST10F271Z1 View Datasheet(PDF) - STMicroelectronics

Part Name
Description
View to exact match
ST10F271Z1 Datasheet PDF : 185 Pages
First Prev 31 32 33 34 35 36 37 38 39 40 Next Last
Internal Flash memory
ST10F271Z1
Then the operation can be resumed in the following way:
FCR0H |= 0x0800;
FCR0H |= 0x8000;
/*Set SER in FCR0H*/
/*Operation resume*/
Before resuming a suspended erase, FCR1H/FCR1L must be read to check if the erase is
already completed (FCR1H = FCR1L = 0x0000 if erase is complete). Original setup of select
operation bits in FCR0H/L must be restored before the operation resume, otherwise the
operation is aborted and bit RESER of FER is set.
Erase suspend, program and resume
A sector erase operation can be suspended in order to program (word or double word)
another sector.
Example: sector erase of sector B0F1 of IFlash module.
FCR0H |= 0x0800;
FCR1L |= 0x0002;
FCR0H |= 0x8000;
/*Set SER in FCR0H*/
/*Set B0F1*/
/*Operation start*/
Example: sector erase suspend.
FCR0H |= 0x4000;
/*Set SUSP in FCR0H*/
do
/*Loop to wait for LOCK=0 and WMS=0*/
{tmp1 = FCR0L;
tmp2 = FCR0H;
} while ((tmp1 && 0x0010) || (tmp2 && 0x8000));
Example: word program of data 0x5555AAAA at address 0x045554 in IFlash module.
FCR0H &= 0xBFFF;
/*Rst SUSP in FCR0H*/
FCR0H|= 0x2000;/*Set WPG in FCR0H*/
FARL = 0x5554;
/*Load Add in FARL*/
FARH = 0x0004;
/*Load Add in FARH*/
FDR0L = 0xAAAA;
/*Load Data in FDR0L*/
FDR0H = 0x5555;
/*Load Data in FDR0H*/
FCR0H |= 0x8000;
/*Operation start*/
Once the program operation is finished, the erase operation can be resumed in the following
way:
FCR0H|= 0x0800;/*Set SER in FCR0H*/
FCR0H|= 0x8000;/*Operation resume*/
Notice that during the program operation in erase suspend, bits SER and SUSP are low. A
word or double word program during erase suspend cannot be suspended.
In summary:
A sector erase can be suspended by setting SUSP bit.
To perform a word program operation during erase suspend, firstly bits SUSP and SER
must be reset, then bit WPG and WMS can be set.
To resume the sector erase operation bit SER must be set again.
In any case it is forbidden to start any write operation with SUSP bit already set.
Set protection
Example 1: Enable write protection of sectors B0F3-0 of bank 0 in IFlash module.
40/185
 

Share Link: 

datasheetbank.com [ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]