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ST10F273Z4 Datasheet(PDF) 35 Page - STMicroelectronics |
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ST10F273Z4 Datasheet(HTML) 35 Page - STMicroelectronics |
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35 / 188 page  ST10F273Z4 Internal Flash memory 35/188 5.4.10 Flash address register high FARH (0x0E 0012) FCR Reset value: 0000h 5.4.11 Flash error register Flash Error register, as well as all the other Flash registers, can be properly read only once LOCK bit of register FCR0L is low. Nevertheless, its content is updated when also BSYx bits are reset as well; for this reason, it is definitively meaningful reading FER register content only when LOCK bit and BSYx bits are cleared. FER (0xE 0014h) FCR Reset value: 0000h 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 reserved ADD20 ADD19 ADD18 ADD17 ADD16 RW RW RW RW RW Table 18. Flash address register high Bit Function ADD(20:16) Address 20:16 These bits must be written with the Address of the Flash location to program in the following operations: Word Program and Double Word Program. 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 reserved WPF RESER SEQER reserved 10ER PGER ERER ERR RC RC RC RC RC RC RC Table 19. Flash error register Bit Function ERR Write error This bit is automatically set when an error occurs during a Flash write operation or when a bad write operation setup is done. Once the error has been discovered and understood, ERR bit must be software reset. ERER Erase error This bit is automatically set when an Erase error occurs during a Flash write operation. This error is due to a real failure of a Flash cell, that can no more be erased. This kind of error is fatal and the sector where it occurred must be discarded. This bit has to be software reset. PGER Program error This bit is automatically set when a Program error occurs during a Flash write operation. This error is due to a real failure of a Flash cell, that can no more be programmed. The word where this error occurred must be discarded. This bit has to be software reset. 10ER 1 over 0 error This bit is automatically set when trying to program at 1 bits previously set at 0 (this does not happen when programming the Protection bits). This error is not due to a failure of the Flash cell, but only flags that the desired data has not been written. This bit has to be software reset. SEQER Sequence error This bit is automatically set when the control registers (FCR1H/L-FCR0H/L, FARH/L, FDR1H/L- FDR0H/L) are not correctly filled to execute a valid Write Operation. In this case no Write Operation is executed. This bit has to be software reset. |
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