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ST10F271B データシート(PDF) 104 Page - STMicroelectronics |
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ST10F271B データシート(HTML) 104 Page - STMicroelectronics |
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104 / 180 page  System reset ST10F271B/ST10F271E 104/180 The start-up configurations and some system features are selected on reset sequences as described in Table 50 and Figure 35. Table 50 describes what is the system configuration latched on PORT0 in the six different reset modes. Figure 35 summarizes the state of bits of PORT0 latched in RP0H, SYSCON, BUSCON0 registers. Software Reset (2) x 0 N Synch. Not activated 0 0010 x 0 N Synch. Not activated 0 0010 0 1 Y Synch. Not activated 0 0010 1 1 Y Synch. Activated by internal logic for 1024 TCL 0 0010 Watchdog Reset (2) x 0 N Synch. Not activated 0 0011 x 0 N Synch. Not activated 0 0011 0 1 Y Synch. Not activated 0 0011 1 1 Y Synch. Activated by internal logic for 1024 TCL 0 0011 1. It can degenerate into a Long Hardware Reset and consequently differently flagged (see Section 20.3 for details). 2. When Bidirectional is active (and with RPD=0), it can be followed by a Short Hardware Reset and consequently differently flagged (see Section 20.6 for details). Table 49. Reset event (continued) Event RSTIN WDTCON Flags min max Table 50. PORT0 latched configuration for the different reset events X: Pin is sampled -: Pin is not sampled PORT0 Sample event Software Reset - - - XX XXXX X - - ---- Watchdog Reset - - - XX XXXX X - - ---- Synchronous Short Hardware Reset - - - XX XXXX XXXXX XX Synchronous Long Hardware Reset XXXXX XXXX XXXXX XX Asynchronous Hardware Reset XXXXX XXXX XXXXX XX Asynchronous Power-On Reset XXXXX XXXX XXXXX XX |
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