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MCP9804-E/MS датащи(PDF) 33 Page - Microchip Technology |
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MCP9804-E/MS датащи(HTML) 33 Page - Microchip Technology |
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33 / 54 page ![]() © 2009 Microchip Technology Inc. DS22203A-page 33 MCP9804 5.3 Summary of Power-on Default The MCP9804 has an internal Power-on Reset (POR) circuit. If the power supply voltage VDD glitches below the VPOR threshold, the device resets the registers to the power-on default settings. Table 5-4 shows the power-on default summary for the temperature sensor registers. TABLE 5-4: POWER-ON RESET DEFAULTS Registers Default Register Data (Hexadecimal) Power-up Default Register Description Address (Hexadecimal) Register Name 0x01 CONFIG 0x0000 Comparator mode Active-Low output Alert and critical output Output disabled Alert not asserted Interrupt cleared Alert limits unlocked Critical limit unlocked Continuous conversion 0°C Hysteresis 0x02 TUPPER 0x0000 0°C 0x03 TLOWER 0x0000 0°C 0x04 TCRIT 0x0000 0°C 0x05 TA 0x0000 0°C 0x06 Manufacturer ID 0x0054 0x0054 (hex) 0x07 Device ID/ Device Revision 0x0200 0x0200 (hex) 0x08 Resolution 0x03 0x03 (hex) |
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