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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ST10F276Z5 датащи(PDF) 70 Page - STMicroelectronics |
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ST10F276Z5 датащи(HTML) 70 Page - STMicroelectronics |
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70 / 239 page  Bootstrap loader ST10F276Z5 70/239 5.7 Selective boot mode The selective boot is a subcase of the Alternate Boot mode. When none of the signatures are correct, instead of executing the standard bootstrap loader (triggered by P0L.4 low at reset), an additional check is made. Address 00’1FFCh is read again with the following behavior: ● If value is 0000h or FFFFh, a jump is performed to the standard bootstrap loader. ● Otherwise: – High byte is disregarded. – Low byte bits select which communication channel is enabled. Therefore a value: ● 0xXX03 configures the Selective Bootstrap Loader to poll for RxD0 and CAN1_RxD. ● 0xXX01 configures the Selective Bootstrap Loader to poll only RxD0 (no boot via CAN). ● 0xXX02 configures the Selective Bootstrap Loader to poll only CAN1_RxD (no boot via UART). ● Other values allow the ST10F276Z5 to execute an endless loop into the Test-Flash. Table 38. Selective boot Bit Function 0 UART selection ‘0’: UART is not watched for a Start condition. ‘1’: UART is watched for a Start condition. 1 CAN1 selection ‘0’: CAN1 is not watched for a Start condition. ‘1’: CAN1 is watched for a Start condition. 2..7 Reserved For upward compatibility, must be programmed to ‘0’ |
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