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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STCN75DS2F датащи(PDF) 18 Page - STMicroelectronics |
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STCN75DS2F датащи(HTML) 18 Page - STMicroelectronics |
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18 / 35 page  Functional description STCN75 18/35 3.1.5 Hysteresis temperature register (THYS) THYS register is a two-byte (16-bit) READ/WRITE register that stores the user- programmable lower trip-point temperature for the thermal alarm in two’s complement format (see Table 8). This register defaults to 75°C at power-up (i.e., 0100 1011 0000 0000). The format of this register is the same as that of the Temperature register. The MSB position contains the sign bit for the digital temperature and Bit14 contains the temperature MSB. 3.2 Power-up default conditions The STCN75 always powers up in the following default states: ● Thermostat mode = comparator mode ● Polarity = active-low ● Fault tolerance = 1 fault (i.e., relevant bits set to '0' in the configuration register) ● TOS = 80°C ● THYS = 75°C ● Register pointer = 00 (temperature register) Note: After power-up these conditions can be reprogrammed via the serial interface. Table 8. TOS and THYS register format (1) 1. These are comparable formats to the DS75 and LM75. Bytes HS byte LS byte Bits MSB TMSB TLSB LSB 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 STCN75 S TMSB TD TD TD TD TD TD 9-bit TLSB 00 00 00 0 Keys: S = two’s complement sign bit TMSB = temperature MSB TLSB = temperature LSB TD = temperature Data |
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