EMC1186 datasheet(28/43 Pages) MICROCHIP

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Dual Channel 1°C Temperature Sensor with Hardware Thermal Shutdown and 1.8V SMBus Communications

Datasheet

Revision 1.0 (07-11-13)

SMSC EMC1186

DATASHEET

Bit 0 - HWSD - This bit is set when the External Diode 1 Temperature exceeds the Hardware Thermal

Shutdown Limit set by the pull-up resistors on the ALERT and SYS_SHDN pins. When set, this bit will

assert the SYS_SHDN pin.

6.3

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 pin from asserting.



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

ALERT pin will be asserted.



‘1’ - The ALERT 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 6 - RUN / STOP - Controls Active/Standby modes.



‘0’ (default) - The device is in Active mode and converting on all channels.



‘1’ - The device is in Standby mode and not converting.

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



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

Section 5.5.1.



‘1’ - The ALERT 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 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 5.3).

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



‘0’ (default) - The dynamic averaging feature is enabled. All temperature channels will be converted

with an averaging factor that is based on the conversion rate as shown in Table 6.5.



‘1’ - The dynamic averaging feature is disabled. All temperature channels will be converted with a

maximum averaging factor of 1x (equivalent to 11-bit conversion). For higher conversion rates, this

averaging factor will be reduced as shown in Table 6.5.

Table 6.3 Configuration Register

ADDR

R/W

DEFAULT

03h

R/W

Configuration

MASK_

ALL

RUN/

STOP

ALERT/

COMP

RECD1

RANGE

DAVG_

DIS

00h

09h

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