MIC280

Micrel

MIC280

18

November 2004

Remote Temperature Result Low-Byte Register (TEMP1l)

8-bits, read only

Remote Temperature Result Low-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

reserved

reserved

reserved

reserved

Temperature data from ADC, least significant bits

Reserved - always reads zero

Bit

Function

Operation

D[7:4]

Measured temperature data for the remote zone, least significant bits.

Read only

D[3:0]

Reserved

Always reads as zeroes

Power-up default value:

Read command byte:

Each LSB represents one-sixteenth degree centigrade. The values are in a binary format such that 1/16th°C (0.0625°C) is

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.

Remote Temperature High Limit Low-Byte Register (THIGH1l)

8-bits, read/write

Remote Temperature High Limit Low-Byte Register

D[7]

D[6]

D[5]

D[4]

D[3]

D[2]

D[1]

D[0]

read/write

read/write

read/write

read/write

reserved

reserved

reserved

reserved

High temperature limit for remote zone, least significant bits.

Reserved - always reads zero

Bit

Function

Operation

D[7:4]

High temperature limit for the remote zone, least significant bits.

Read/write

D[3:0]

Reserved.

Always reads as zeros

Power-up default value:

Read/Write command byte:

Each LSB represents one-sixteenth degree centigrade. The values are in a binary format such that 1/16th°C (0.0625°C) is

Any writes to a temperature limit register will result in the corresponding fault queue being purged and reset.