EMC1183 datasheet(29/48 Pages) MICROCHIP

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

Datasheet

SMSC EMC1183

Revision 1.0 (07-11-13)

DATASHEET

Bit 3 - LOW - This bit is set when any of the temperature channels drops below its programmed low

limit. See the Low Limit Status Register for specific channel information (Section 6.16). When set, this

bit will assert the ALERT / THERM2 pin.

Bit 2 - FAULT - This bit is asserted when a diode fault is detected on any of the external diode

channels. See the External Diode Fault Register for specific channel information (Section 6.10). When

set, this bit will assert the ALERT / THERM2 pin.

Bit 1 - THERM - This bit is set when the any of the temperature channels exceeds its programmed

Therm Limit. See the Therm Limit Status Register for specific channel information (Section 6.17).

When set, this bit will assert the THERM pin.

6.4

Configuration Register 03h / 09h

The Configuration Register controls the basic operation of the device. This register is fully accessible

at either address.

Bit 7 - MASK_ALL - Masks the ALERT / THERM2 pin from asserting.



‘0’ - (default) - The ALERT / THERM2 pin is not masked. If any of the appropriate status bits are

set the ALERT / THERM2 pin will be asserted.



‘1’ - The ALERT/ THERM2 pin is masked. It will not be asserted for any interrupt condition unless

it is configured in comparator mode. The Status Registers will be updated normally.

Bit 5 - ALERT/THERM2 - Controls the operation of the ALERT / THERM2 pin.



‘0’ (default) - The ALERT / THERM2 acts as an Alert pin and has interrupt behavior as described

in Section 5.5.1.



‘1’ - The ALERT / THERM2 acts as a THERM pin and has comparator behavior as described in

Section 5.5.2. 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 5.2).

Bit 1 - DAVG_DIS - Disables the dynamic averaging feature on all temperature channels.

Table 6.4 Configuration Register

ADDR

R/W

DEFAULT

03h

R/W

Configuration

MASK_

ALL

-ALERT/

THERM2

RECD1

RECD2

RANGE

DAVG_

DIS

APDD

00h

09h

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