May 2006
13
MIC280
MIC280
Micrel
Local Temperature Result Register (TEMP0)
 8-bits, read-only
 
Local Temperature Result Register
 
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
 
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
 
Temperature Data from ADC
 
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癈)**
 
Read command byte:    
0000 0000
b
 = 00
h
Each LSB represents one degree centigrade. The values are in a twos complement binary format such that 0癈 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.
Remote Temperature Result High-Byte Register (TEMP1h)
 8-bits, read only
 
Remote Temperature Result High-Byte Register
 
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
 
read-only
read-only
read-only
read-only
read-only
read-only
read-only
read-only
 
Temperature Data from ADC
 
Bit
Function
Operation
 
D[7:0]
Measured temperature data for the remote zone, most signicant byte.
Read only
 
Power-up default value:
0000 0000
b
 = 00
h
 (0癈)**
 
Read command byte:    
0000 0001
b
 = 01
h
Each LSB represents one degree centigrade. The values are in a twos complement binary format such that 0癈 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.
Detailed Register Descriptions
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