MIC280_06 Datasheet, PDF (13/23 Pages) Micrel Semiconductor – Precision IttyBitty Thermal Supervisor

MIC280
Detailed Register Descriptions
Micrel
D[7]
read-only
D[6]
read-only
Local Temperature Result Register (TEMP0)
8-bits, read-only
Local Temperature Result Register
D[5]
read-only
D[4]
read-only
D[3]
read-only
D[2]
read-only
Temperature Data from ADC
D[1]
read-only
D[0]
read-only
Bit
Function
Operation
D[7:0]
Measured temperature data for the local zone.
Read only
Power-up default value:
0000 0000_b = 00_h (0°C)**
Read command byte:
0000 0000_b = 00_h
Each LSB represents one degree centigrade. The values are in a two’s complement binary format such that 0°C is reported
as 0000 0000_b. See Temperature Data Format (above) for more details.
**TEMP0 will contain measured temperature data after the completion of one conversion.
D[7]
read-only
Remote Temperature Result High-Byte Register (TEMP1h)
8-bits, read only
Remote Temperature Result High-Byte Register
D[6]
read-only
D[5]
read-only
D[4]
read-only
D[3]
read-only
D[2]
read-only
D[1]
read-only
Temperature Data from ADC
D[0]
read-only
Bit
Function
Operation
D[7:0]
Measured temperature data for the remote zone, most significant byte.
Read only
Power-up default value:
0000 0000_b = 00_h (0°C)**
Read command byte:
0000 0001_b = 01_h
Each LSB represents one degree centigrade. The values are in a two’s complement binary format such that 0°C is reported
as 0000 0000b. See Temperature Data Format (above) for more details.
TEMP1h can be read using either a Read_Byte operation or a Read_Word operation. Using Read_Byte will yield the 8-bit
value in TEMP1h. The complete remote temperature result in both TEMP1h and TEMP1l may be obtained by performing a
Read_Word operation on TEMP1h. The MIC280 will respond to a Read_Word with a command byte of 01h (TEMP1h) by
returning the value in TEMP1h followed by the value in TEMP1l. This guarantees that the data in both registers is from the
same temperature-to-digital conversion cycle. The Read_Word operation is diagramed in Figure 3. This is the only MIC280
register that supports Read_Word.
**TEMP1h will contain measured temperature data after the completion of one conversion.
May 2006
13
MIC280