1°C Triple Temperature Sensor with Beta Compensation and Hotter of Two Zones
Datasheet
The Status Register is a read only register and returns the operational status of the part. External diode
faults are indicated by bits 1 and 0. If either bit is set to ‘1’, then a diode fault has occurred. When a
diode fault occurs, the D1 or D2 status bit is set, but otherwise the data remains unchanged.
Bit 7 - Busy - indicates that the ADC is currently converting a temperature.
Bit 4 - HOTTER - during Hotter of Two mode, this bit indicates which of the external diode channels
is hotter. If this bit is ‘0’, then External Diode 1 is hotter or equal to External Diode 2. If this bit is ‘1’,
then External Diode 2 is hotter than External Diode 1. During normal operation, this bit will always read
a ‘0’.
Bit 1 - D2 - indicates that a diode fault has occurred on External Diode 2.
Bit 0 - D1 - indicates that a diode fault has occurred on External Diode 1.
4.4
Configuration Register (03h Read, 09h Write)
Table 4.3 Configuration Register
ADDR
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
03h Read, Config
09h Write
-
STANDBY
-
-
-
CR<2:0>
45h
The Configuration Register controls the basic functionality of the EMC1043. The bits are described
below:
Bit 6 - STANDBY- controls the ADC conversions and power modes of the part.
'0' - The device is in the run operating mode. The ADC is converting at the user-programmed
conversion rate.
'1' - (default) The device is in the standby operating mode (see Section 3.1).
Bit 2-0 - CR<2:0> - determines the conversion rate for the temperature monitoring per Table 4.4.
Table 4.4 Conversion Rate
CR<2:0>
CONVERSIONS / SECOND
2
1
0
(CONVERSION TIME)
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Reserved
Reserved
Reserved
1 Conversion / sec
2 Conversions / sec
4 Conversions / sec (default)
8 Conversions / sec
16 Conversions / sec
Revision 1.37 (09-05-06)
SMSC EMC1043
DATA2S0HEET
SMSC [ SMSC CORPORATION ]
