1°C Temperature Sensor with Beta Compensation
Datasheet
Bit 5 - ALERT/COMP - Controls the operation of the ALERT pin.
‘0’ (default) - The ALERT pin acts as described in Section 5.3.
‘1’ - The ALERT pin acts in comparator mode as described in Section 5.3.2. In this mode the
MASK_ALL bit is ignored.
Bit 4 - RECD1 - Disables the Resistance Error Correction (REC) for External Diode 1.
‘0’ (default)- REC is enabled for External Diode 1.
‘1’ - REC is disabled for External Diode 1.
Bit 3 - RECD2 - Disables the Resistance Error Correction (REC) for External Diode 2 and External
Diode 3.
‘0’ (default) - REC is enabled for External Diode 2 and External Diode 3.
‘1’ - REC is disabled for External Diode 2 and External Diode 3.
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 5.3).
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 5.1 and Table 5.2.
‘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 5.1 and Table 5.2.
Bit 0 - APDD (EMC1404 only) - Disables the anti-parallel diode operation. Beta Compensation is
disabled on External Diode 2 and 3 regardless of APDD setting. In addition, External Diode 2 Beta
Configuration register will be ignored.
‘0’ (default) - Anti-parallel diode mode is enabled. Two external diodes will be measured on the
DP2 and DN2 pins.
‘1’ - Anti-parallel diode mode is disabled. Only one external diode will be measured on the DP2
and DN2 pins.
6.5
Conversion Rate Register
Table 6.5 Conversion Rate Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
04h
0Ah
Conversion
Rate
06h
(4/sec)
R/W
-
-
-
-
CONV[3:0]
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 6.6.
Revision 2.0 (08-10-12)
SMSC EMC1403/EMC1404
DATA3S2HEET
SMSC [ SMSC CORPORATION ]
