EMC1184 datasheet(33/48 Pages) MICROCHIP

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

Datasheet

SMSC EMC1184

Revision 1.0 (07-11-13)

DATASHEET

When the device is in Standby mode, updating the limit registers will have no effect until the next

conversion cycle occurs. This can be initiated via a write to the One Shot Register (see Section 6.8,

"One Shot Register 0Fh") or by clearing the RUN / STOP bit (see Section 6.4, "Configuration Register

03h / 09h").

6.7

Scratchpad Registers 11h and 12h

The Scratchpad Registers are Read / Write registers that are used for place holders to be software

compatible with legacy programs. Reading from the registers will return what is written to them.

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

Table 6.8 Scratchpad Register

ADDR

R/W

DEFAULT

11h

R/W

Scratchpad

00h

12h

R/W

Scratchpad

00h

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)

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