MIC280 MICREL [Micrel Semiconductor], MIC280 Datasheet - Page 18

• Manufacturer Part Number: MIC280
• Description: Precision IttyBitty Thermal Supervisor
• Manufacturer: MICREL [Micrel Semiconductor]

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 0000
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 guaran-
tees 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.
**TEMP1l will contain measured temperature data after the completion of one conversion.
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 0000
Any writes to a temperature limit register will result in the corresponding fault queue being purged and reset.
MIC280
High temperature limit for remote zone, least significant bits.
read/write
read-only
D[7]
D[7:4]
D[3:0]
D[7]
D[7:4]
D[3:0]
Bit
Bit
Temperature data from ADC, least significant bits
Power-up default value:
Read command byte:
Power-up default value:
Read/Write command byte:
Function
Measured temperature data for the remote zone, least significant bits.
Reserved
Function
High temperature limit for the remote zone, least significant bits.
Reserved.
read/write
read-only
D[6]
D[6]
b
b
. See Temperature Data Format (above) for more details.
. See Temperature Data Format (above) for more details.
Remote Temperature High Limit Low-Byte Register (THIGH1l)
Remote Temperature Result Low-Byte Register (TEMP1l)
read/write
read-only
D[5]
D[5]
Remote Temperature High Limit Low-Byte Register
Remote Temperature Result Low-Byte Register
read/write
read-only
0000 0000
0001 0000
0000 0000
0001 0011
D[4]
D[4]
8-bits, read/write
8-bits, read only
b
b
b
b
18
= 13
= 00
= 10
= 00
reserved
reserved
D[3]
D[3]
h
h
h
h
(0°C)**
(0°C)
Reserved - always reads zero
Reserved - always reads zero
reserved
reserved
D[2]
D[2]
Operation
Read only
Always reads as zeroes
Operation
Read/write
Always reads as zeros
reserved
reserved
D[1]
D[1]
November 2004
reserved
reserved
D[0]
D[0]