EMC1187 datasheet(30/47 Pages) MICROCHIP

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

Datasheet

Revision 1.0 (07-11-13)

SMSC EMC1187

DATASHEET

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 6.6.



‘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.

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

Table 6.6 Conversion Rate

CONV[3:0]

CONVERSIONS / SECOND

HEX

4 (default)

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