MIC3002_10 Datasheet, PDF (40/65 Pages) Micrel Semiconductor – FOM Management IC with Internal Calibration

Micrel, Inc.
MIC3002
Detailed Register Descriptions
Note: Serial bus addresses shown assume that I2CADR = Ax_h.
Alarm Threshold Registers
D[7]
read/write
Default Value
Serial Address
Byte Address
D[6]
read/write
Temperature High Alarm Threshold
D[5]
read/write
D[4]
read/write
D[3]
read/write
0000 0000b = 00h (0°C)
A2h
MSB (TXMAHh): 00 = 00h
LSB (TXMAHl): 00 = 01h
D[2]
read/write
D[1]
read/write
D[0]
read/write
Each LSB of TMAXh represents one degree centigrade. This register is to be used in conjunction with TMAXl to yield a sixteen-
bit temperature value.
The value in this register is uncalibrated. The nine MSbits of threshold value (TMAXh;TMAXl) are compared bit to bit to the
nine MSbits value of the temperature reading (TEMPh;TEMPl).. Alarm bit Ax is set if Reading > 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
0000 0000b = 00h (0°C)
Serial Address
A2h
Byte Address
MSB (TMINh): 02 = 02h
LSB (TMINl): 02 = 02h
Each LSB of TMINh represents one degree centigrade. TMINh is to be used in conjunction with TMINl to yield a sixteen-bit
temperature value. The value in this register is uncalibrated. The nine MSbits of threshold value (TMINh;TMINl) are compared,
bit to bit, to The nine MSbits value of the temperature reading (TEMPh;TEMPl). Alarm bit Ax is set if Reading < 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
0000 0000b = 00h (0V)
Serial Address
A2h
Bytes Address
MSB (VMAXh): 08 = 08h
LSB (VMAXl): 09 = 09h
Each LSB of VMAXh represents 25.6mV and each LSB of VMAXl represents 0.1mV. The sixteen bits threshold value
(VMAXh;VMAXl) is compared bit to bit to the sixteen bits value of the voltage reading (VINh;VINl). Alarm bit Ax is set if Reading
> Threshold.
July 2007
40
M9999-073107-B
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