MIC281 Datasheet, PDF (8/12 Pages) Micrel Semiconductor – Low-Cost IttyBitty Thermal Sensor IttyBitty

MIC281
Detailed Register Descriptions
Micrel
D[7]
read-only
D[6]
read-only
Remote Temperature Result (TEMP)
8-bits, read-only
Remote Temperature Result Register
D[5]
read-only
D[4]
read-only
D[3]
read-only
D[2]
read-only
Temperature Data from ADC
D[1]
read-only
D[0]
read-only
Bit
Function
Operation
D[7:0]
Measured temperature data for the remote zone
Read-only
Power-up default value: 0000 0000_b = 00_h (0°C)**
Command byte:
0000 0001_b = 01_h
Each LSB represents one degree centigrade. The values are in a two’s complement binary format such that 0°C is reported
as 0000 0000b. See Temperature Data Format (above) for more details.
**TEMP will contain measured temperature data after the completion of one conversion.
D[7]
reserved
Reserved
D[6]
reserved
Shutdown
(SHDN)
Configuration Register (CONFIG)
8-bits, read/write
Configuration Register
D[5]
reserved
D[4]
reserved
D[3]
reserved
D[2]
reserved
reserved
D[1]
reserved
D[0]
write-only
Bits(s) Function
Operation*
D7
Reserved
Always write as zero;
reads undefined
SHDN
Shutdown bit
0 = normal operation, 1 =
shutdown
D[5:0]
Reserved
Always write as zero;
reads undefined
Power-up default value: x0xx xxxx_b (Not in shutdown mode)
Command byte:
0000 0011_b = 03_h
* Any write to CONFIG will result in any A/D conversion in progress being aborted and the result discarded. The A/D will begin a new conver-
sion sequence once the write operation is complete.
MIC281
8
November 2004