EMC1183 datasheet(33/48 Pages) MICROCHIP

33 / 48 page

Triple Channel 1°C Temperature Sensor with Beta Compensation and 1.8V SMBus Communications

Datasheet

SMSC EMC1183

Revision 1.0 (07-11-13)

DATASHEET

6.8

One Shot Register 0Fh

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 effect.

6.9

Therm Limit Registers

The Therm Limit Registers are used to determine whether a critical thermal event has occurred. If the

measured temperature exceeds the Therm Limit, the THERM pin is asserted. The limit setting must

match the chosen data format of the temperature reading registers.

Unlike the ALERT / THERM2 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.

6.10

External Diode Fault Register 1Bh

Table 6.9 One Shot Register

ADDR.

R/W

DEFAULT

0Fh

One Shot

Writing to this register initiates a single conversion cycle. Data

is not stored and always reads 00h

00h

Table 6.10 Therm Limit Registers

ADDR.

R/W

DEFAULT

19h

R/W

External

Diode 1

Therm Limit

128

55h

(85°C)

1Ah

R/W

External

Diode 2

Therm Limit

128

55h

(85°C)

20h

R/W

Internal Diode

Therm Limit

128

55h

(85°C)

21h

R/W

Therm

Hysteresis

128

0Ah

(10°C)

Table 6.11 External Diode Fault Register

ADDR.

R/W

DEFAULT

1Bh

R-C

External

Diode Fault

E2FLT

E1FLT

00h

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