MIC3003 Datasheet, PDF (40/75 Pages) Micrel Semiconductor – FOM Management IC with Internal Calibration

Micrel, Inc.
MIC3003
Detailed Register Descriptions
Note: Serial bus addresses shown assume that the base device address is AO_h.
Alarm Threshold Registers
Temperature High Alarm Threshold
D[7]
read/write
D[6]
read/write
D[5]
read/write
D[4]
read/write
D[3]
read/write
D[2]
read/write
D[1]
read/write
D[0]
read/write
Default value for both bytes
0000 0000b = 00h (0 °C)
Serial address
A2h
Byte addresses
MS byte (TMAXh): 00 = 00h
LS byte (TMAXl): 01 = 01h
Each LS bit of TMAXh represents one degree Celsius. TMAXl is not used, since all limit comparisons for temperature use
eight-bit values.
The eight bits of the high alarm threshold value (TMAXh) are compared to the temperature result (TEMPh). ALARM0 bit 7 is
set if Result > Threshold.
Temperature Low Alarm Threshold
D[7]
read/write
D[6]
read/write
D[5]
read/write
D[4]
read/write
D[3]
read/write
D[2]
read/write
D[1]
read/write
D[0]
read/write
Default value for both bytes
0000 0000b = 00h (0 °C)
Serial address
A2h
Byte addresses
MS byte (TMINh): 02 = 02h
LS byte (TMINl): 03 = 03h
Each LS bit of TMINh represents one degree Celsius. TMINl is not used, since all limit comparisons for temperature use eight-
bit values..
The eight MS bits of the low alarm threshold value (TMINh) are compared to the temperature result (TEMPh). ALARM0 bit 6 is
set if Result < Threshold.
Voltage High Alarm Threshold
D[7]
read/write
D[6]
read/write
D[5]
read/write
D[4]
read/write
D[3]
read/write
D[2]
read/write
D[1]
read/write
D[0]
read/write
Default value for both bytes
0000 0000b = 00h (0 V)
Serial address
A2h
Byte addresses
MS byte (VMAXh): 08 = 08h
LS byte (VMAXl): 09 = 09h
Each LS bit of VMAXh represents 25.6 mV and each LS bit of VMAXl represents 0.1 mV. The sixteen-bit threshold value
(VMAXh:VMAXl) is compared to the sixteen bits value of the voltage result (VINh:VINl). ALARM0 bit 5 is set if
Result > Threshold.
November 2009
40
M9999-111209-C
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