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ST10F273Z4 Datasheet(PDF) 40 Page - STMicroelectronics |
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ST10F273Z4 Datasheet(HTML) 40 Page - STMicroelectronics |
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40 / 188 page  Internal Flash memory ST10F273Z4 40/188 5.6 Write operation examples In the following, examples for each kind of Flash write operation are presented. Note: Moreover, direct addressing is not allowed for write accesses to IFlash control registers. This means that both address and data for a writing operation must be loaded in one of ST10 GPR register (R0...R15). Write operation on IBus registers is 16 bit wide. Example of indirect addressing mode: MOV RWm, #ADDRESS; /*Load Add in RWm*/ MOV RWn, #DATA; /*Load Data in RWn*/ MOV [RWm], RWn; /*Indirect addressing*/ Word program Example: 32-bit Word Program of data 0xAAAAAAAA at address 0x025554 FCR0H|= 0x2080; /*Set WPG in FCR0H, SMOD must be set*/ FARL = 0x5554; /*Load Add in FARL*/ FARH = 0x0002; /*Load Add in FARH*/ FDR0L = 0xAAAA; /*Load Data in FDR0L*/ FDR0H = 0xAAAA; /*Load Data in FDR0H*/ FCR0H|= 0x8000; /*Operation start*/ Double word program Example: Double Word Program (64-bit) of data 0x55AA55AA at address 0x035558 and data 0xAA55AA55 at address 0x03555C. FCR0H |= 0x1080; /*Set DWPG, SMOD must be set/ FARL = 0x5558; /*Load Add in FARL*/ FARH = 0x0003; /*Load Add in FARH*/ FDR0L = 0x55AA; /*Load Data in FDR0L*/ FDR0H = 0x55AA; /*Load Data in FDR0H*/ FDR1L = 0xAA55; /*Load Data in FDR1L*/ FDR1H = 0xAA55; /*Load Data in FDR1H*/ FCR0H |= 0x8000; /*Operation start*/ Double Word Program is always performed on the Double Word aligned on a even Word: bit ADD2 of FARL is ignored. Sector erase Example: Sector Erase of sectors B0F1 and B0F0 of Bank 0. FCR0H |= 0x0880; /*Set SER in FCR0H, SMOD must be set*/ FCR1L |= 0x0003; /*Set B0F1, B0F0*/ FCR0H |= 0x8000; /*Operation start*/ Suspend and resume Word Program, Double Word Program, and Sector Erase operations can be suspended in the following way: FCR0H |= 0x4000; /*Set SUSP in FCR0H*/ |
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