MIC280_14 Datasheet, PDF (16/28 Pages) Micrel Semiconductor – Precision IttyBitty™ Thermal Supervisor

Micrel, Inc.
MIC280
Detailed Register Descriptions
Local Temperature Result Register (TEMP0) 8-bits, Read-Only
Temperature Data from ADC
D[7]
read-only
D[6]
read-only
Local Temperature Result Register
D[5]
read-only
D[4]
read-only
D[3]
read-only
D[2]
read-only
D[1]
read-only
D[0]
read-only
Bit
D[7:0]
Function
Measured temperature data for the local zone.
Operation
Read-only
Power-up default value: 0000 0000_b = 00_h = (0°C)⁽¹⁶⁾
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°C is
reported as 0000 0000b. See the Temperature Data Format section for more details.
Note:
16. TEMP0 will contain measured temperature data after the completion of one conversion.
Remote Temperature Result High-Byte Register (TEMP1h) 8-bits, Read-Only
Temperature Data from ADC
D[7]
read-only
D[6]
read-only
Remote Temperature Result High-Byte Register
D[5]
read-only
D[4]
read-only
D[3]
read-only
D[2]
read-only
D[1]
read-only
D[0]
read-only
Bit
D[7:0]
Function
Measured temperature data for the remote zone, most significant byte.
Operation
Read-only
Power-up default value: 0000 0000_b = 00_h = (0°C)⁽¹⁷⁾
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°C is
reported as 0000 0000b. See the Temperature Data Format section 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 diagrammed in Figure 3. This is the only
MIC280 register that supports Read_Word.
Note:
17. TEMP0 will contain measured temperature data after the completion of one conversion.
May 5, 2014
16
Revision 2.0