MIC280_14 Datasheet, PDF (22/28 Pages) Micrel Semiconductor – Precision IttyBitty™ Thermal Supervisor

Micrel, Inc.
Remote Temperature Result Low-Byte Register (TLOW1l) 8-bits, Read only
MIC280
D[7]
read-only
Remote Temperature Result Low-Byte Register
D[6]
read-only
D[5]
read-only
D[4]
read-only
D[3]
reserved
D[2]
reserved
D[1]
reserved
Temperature data from ADC, least significat bits. Reserved always reads zero.
D[0]
reserved
Bit
D[7:4]
D[3:0]
Function
Measured temperature data for the remote zone, least significant bits.
Reserved
Operation
Read only
Always reads as zero
Power-up default value: 0000 0000_b = 00_h (0°C)⁽²⁰⁾
Read command byte: 0001 0000_b = 10_h
Each LSB represents one-sixteenth degree centigrade. The values are in a binary format such that 1/16th°C (0.0625°C) is
reported as 0001 0000b. See Temperature Data Format for more details.
TEMP1l can be accessed using a Read_Byte operation. However, 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. TEMP1h is the only MIC280 register that supports Read_Word.
Note:
20. TEMP1l will contain measured temperature data after the completion of one conversion.
Remote Temperature High Limit Low-Byte Register (THIGH1l) 8-bits, Read/Write
D[7]
read/write
Remote Temperature High Limit Low-Byte Register
D[6]
read/write
D[5]
read/write
D[4]
read/write
D[3]
reserved
D[2]
reserved
D[1]
reserved
High temperature limit for remote zone, least significat bits. Reserved always reads zero.
D[0]
reserved
Bit
D[7:4]
D[3:0]
Function
High temperature limit for the remote zone, least significant bits.
Reserved
Operation
Read/write
Always reads as zero
Power-up default value: 0000 0000_b = 00_h (0°C)
Read/write command byte: 0001 0011_b = 13_h
Each LSB represents one-sixteenth degree centigrade. The values are in a binary format such that 1/16th°C (0.0625°C) is
reported as 0001 0000b. See Temperature Data Format for more details.
Any writes to a temperature limit register will result in the corresponding fault queue being purged and reset.
May 5, 2014
22
Revision 2.0