EMC1402-2-ACZL-TR View Datasheet(PDF) - SMSC -> Microchip
Part Name
Description
MFG CO.
'EMC1402-2-ACZL-TR' PDF : 37 Pages View PDF
1°C Temperature Sensor with Beta Compensation
Datasheet
6.8
One Shot Register
ADDR.
0Fh
R/W
W
Table 6.9 One Shot Register
REGISTER B7 B6 B5 B4 B3
B2
B1
B0
One Shot
Writing to this register initiates a single conversion cycle. Data
is not stored and always reads 00h
DEFAULT
00h
6.9
The One Shot Register is used to initiate a one shot command. Writing to the one shot register, when
the device is in standby mode and BUSY bit (in Status Register) is ‘0’, will immediately cause the ADC
to update all temperature measurements. Writing to the One Shot Register while the device is in active
mode will have no affect.
Therm Limit Registers
ADDR.
19h
20h
21h
Table 6.10 Therm Limit Registers
R/W
REGISTER B7 B6 B5 B4
B3
External
R/W Diode THERM 128 64 32 16
8
Limit
R/W
Internal Diode
THERM Limit
128
64
32
16
8
R/W
THERM
Hysteresis
128 64
32
16
8
B2 B1 B0 DEFAULT
4
2
1
4
2
1
4
2
1
55h
(85°C)
55h
(85°C)
0Ah
(10°C)
6.10
The THERM Limit Registers are used to determine whether a critical thermal event has occurred. If
the measured temperature exceeds the THERM Limit, then the THERM pin is asserted. The limit
setting must match the chosen data format of the temperature reading registers.
Unlike the ALERT pin, the THERM pin cannot be masked. Additionally, the THERM pin will be released
once the temperature drops below the corresponding threshold minus the THERM Hysteresis.
Channel Mask Register
ADDR. R/W
1Fh R/W
REGISTER
Channel
Mask
Table 6.11 Channel Mask Register
B7
B6
B5
B4
B3
B2
-
-
-
-
-
-
B1
B0
DEFAULT
E
INT
MASK MASK
00h
The Channel Mask Register controls individual channel masking. When a channel is masked, the
ALERT pin will not be asserted when the masked channel reads a diode fault or out of limit error. The
channel mask does not mask the THERM pin.
Bit 1 - EMASK - Masks the ALERT pin from asserting when the External Diode channel is out of limit
or reports a diode fault.
„ ‘0’ (default) - The External Diode channel will cause the ALERT pin to be asserted if it is out of
limit or reports a diode fault.
SMSC EMC1402
29
DATASHEET
Revision 2.0 (08-10-12)
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