EMC1412 Datasheet, PDF (29/47 Pages) SMSC Corporation – Multiple Channel 1 Temperature Sensor with Beta Compensation

Multiple Channel 1°C Temperature Sensor with Beta Compensation
Datasheet
Bit 2 - RANGE - Configures the measurement range and data format of the temperature channels.
„ ‘0’ (default) - The temperature measurement range is 0°C to +127.875°C and the data format is
binary.
„ ‘1’ -The temperature measurement range is -64°C to +191.875°C and the data format is offset
binary (see Table 6.2).
Bit 1 - DAVG_DIS - Disables the dynamic averaging feature on all temperature channels.
„ ‘0’ (default) - The dynamic averaging feature is enabled. All temperature channels will be converted
with an averaging factor that is based on the conversion rate as shown in Table 6.1.
„ ‘1’ - The dynamic averaging feature is disabled. All temperature channels will be converted with a
maximum averaging factor of 1x (equivalent to 11-bit conversion). For higher conversion rates, this
averaging factor will be reduced as shown in Table 6.1.
7.5
Conversion Rate Register
ADDR
04h
0Ah
R/W
R/W
Table 7.5 Conversion Rate Register
REGISTER
B7
B6
B5 B4 B3 B2 B1 B0
DEFAULT
Conversion
Rate
-
-
-
-
CONV[3:0]
06h
(4/sec)
The Conversion Rate Register controls how often the temperature measurement channels are updated
and compared against the limits. This register is fully accessible at either address.
Bits 3-0 - CONV[3:0] - Determines the conversion rate as shown in Table 7.6.
HEX
0h
1h
2h
3h
4h
5h
6h
7h
8h
9h
Ah
Bh - Fh
Table 7.6 Conversion Rate
CONV[3:0]
3
2
1
0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
0
0
0
1
0
0
1
1
0
1
0
All others
CONVERSIONS / SECOND
1 / 16
1/8
1/4
1/2
1
2
4 (default)
8
16
32
64
1
SMSC EMC1412
29
DATASHEET
Revision 1.41 (02-23-12)