MCP9808
5.3
Summary of Power-on Default
The MCP9808 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 5-3 shows the power-on default summary for the
Temperature Sensor registers.
TABLE 5-3:
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
0x03
0x04
0x05
0x06
0x07
0x08
TUPPER
0x0000
0x0000
0x0000
0x0000
0x0054
0x0400
0x03
0°C
TLOWER
0°C
TCRIT
0°C
TA
0°C
Manufacturer ID
Device ID/Device Revision
Resolution
0x0054 (hex)
0x0400 (hex)
0x03 (hex)
© 2011 Microchip Technology Inc.
DS25095A-page 33
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