ST10F276Z5 STMicroelectronics, ST10F276Z5 Datasheet - Page 44

• Manufacturer Part Number: ST10F276Z5
• Description: 16-BIT MICROCONTROLLER WITH MAC UNIT, UP TO 832 KBYTES FLASH MEMORY AND UP TO 68 KBYTES RAM
• Manufacturer: STMicroelectronics

Specifications of ST10F276Z5

• Single Voltage Supply: 5V ±10% (embedded regulator for 1.8 V core supply)

Internal Flash memory
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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 B3F1 of Bank 3 in XFLASH Module.
Example: Sector Erase Suspend.
Example: Word Program of data 0x5555AAAA at address 0x0C5554 in XFLASH module.
Once the Program operation is finished, the Erase operation can be resumed in the
following way:
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.
To summarize:
Set protection
Example 1: Enable Write Protection of sectors B0F3-0 of Bank 0 in IFLASH module.
Notice that bit SMOD of FCR0H must not be set, since Write Protection bits of IFLASH
Module are stored in Test-Flash (XFLASH Module).
FCR0H|= 0x0800;/*Set SER in FCR0H*/
FCR1H|= 0x0002;/*Set B3F1*/
FCR0H|= 0x8000;/*Operation start*/
FCR0H|= 0x4000;/*Set SUSP in FCR0H*/
do
{tmp1 = FCR0L;
} while ((tmp1 && 0x0010) || (tmp2 && 0x8000));
FCR0H&= 0xBFFF;/*Rst SUSP in FCR0H*/
FCR0H|= 0x2000;/*Set WPG in FCR0H*/
FARL = 0x5554; /*Load Add in FARL*/
FARH = 0x000C; /*Load Add in FARH*/
FDR0L = 0xAAAA; /*Load Data in FDR0L*/
FDR0H = 0x5555; /*Load Data in FDR0H*/
FCR0H|= 0x8000; /*Operation start*/
FCR0H|= 0x0800;/*Set SER in FCR0H*/
FCR0H|= 0x8000;/*Operation resume*/
FCR0H|= 0x0100;/*Set SPR in FCR0H*/
FARL = 0xDFB4;/*Load Add of register FNVWPIRL in FARL*/
FARH = 0x000E;/*Load Add of register FNVWPIRL in FARH*/
FDR0L = 0xFFF0;/*Load Data in FDR0L*/
FDR0H = 0xFFFF;/*Load Data in FDR0H*/
FCR0H|= 0x8000;/*Operation start*/
tmp2 = FCR0H;
–
–
–
–
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
/*Loop to wait for LOCK=0 and WMS=0*/
ST10F276Z5