Microchip Technology TMPSNSRD-TCPL1 Hoja De Datos
© 2009-2012 Microchip Technology Inc.
DS22203C-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, V
circuit. If the power supply voltage, V
DD
, glitches below
the V
POR
threshold, the device resets the registers to
the power-on default settings.
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
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
T
UPPER
0x0000
0°C
0x03
T
LOWER
0x0000
0°C
0x04
T
CRIT
0x0000
0°C
0x05
T
A
0x0000
0°C
0x06
Manufacturer ID
0x0054
0x0054 (hex)
0x07
Device ID/Device Revision
0x0201
0x0201 (hex)
0x08
Resolution
0x03
0x03 (hex)