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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) 69 Page - STMicroelectronics |
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ST10F276Z5 датащи(HTML) 69 Page - STMicroelectronics |
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69 / 239 page  ST10F276Z5 Bootstrap loader 69/239 5.6.10 EMUCON register 5.6.11 Internal decoding of test modes The test mode decoding logic is located inside the ST10F276Z5 Bus Controller. The decoding is as follows: ● Alternate Boot mode decoding: (P0L.5 & P0L.4) ● Standard Bootstrap decoding: (P0L.5 & P0L.4) ● Normal operation: (P0L.5 & P0L.4) The other configurations select ST internal test modes. 5.6.12 Example In the following example, Alternate Boot mode works as follows: on rising edge of RSTIN pin, the reset configuration is latched: ● If Bootstrap Loader mode is not enabled (P0L[5..4] = ‘11’), the device hardware proceeds with a standard hardware reset procedure. ● If standard Bootstrap Loader is enabled (P0L[5..4] = ‘10’), the standard ST10 Bootstrap Loader is enabled and a variable is cleared to indicate that ABM is not enabled. ● If Alternate Boot mode is selected (P0L[5..4] = ‘01’), then, depending on signatures integrity checks, a predefined reset sequence is activated. EMUCON (FE0Ah / 05h) SFR Reset value: - xxh: 15 14 13 12 11 10 987 65432 10 - ABM -R - Table 37. ABM bit description Bit Function ABM ABM Flag (or TMOD3) ‘0’: Alternate Boot mode is not selected by reset configuration on P0L[5..4] ‘1’: Alternate Boot mode is selected by reset configuration on P0L[5..4]: This bit is set if P0L[5..4] = ‘01’ during hardware reset. |
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