EMC1184 datasheet(30/48 Pages) MICROCHIP

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

Datasheet

Revision 1.0 (07-11-13)

SMSC EMC1184

DATASHEET

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.



‘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 6.6.



‘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 6.6.

Bit 0 - APDD - Disables the anti-parallel diode operation. Beta Compensation is disabled on External

Diode 2 and 3 regardless of APDD setting. In addition, External Diode 2 Beta Configuration register

will be ignored.



‘0’ (default) - Anti-parallel diode mode is enabled. Two external diodes will be measured on the

DP2 and DN2 pins.



‘1’ - Anti-parallel diode mode is disabled. Only one external diode will be measured on the DP2

and DN2 pins.

6.5

Conversion Rate Register 04h / 0Ah

The Conversion Rate Register controls how often the temperature measurement channels are updated

and compared against the limits. This register is fully accessible at either address.

Bits 3-0 - CONV[3:0] - Determines the conversion rate as shown in Table 6.6.

Table 6.5 Conversion Rate Register

ADDR

R/W

DEFAULT

04h

R/W

Conversion

Rate

CONV[3:0]

06h

(4/sec)

0Ah

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