EMC1184 datasheet(32/48 Pages) MICROCHIP

32 / 48 page

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

Datasheet

Revision 1.0 (07-11-13)

SMSC EMC1184

DATASHEET

The device contains both high and low limits for all temperature channels. If the measured temperature

exceeds the high limit, then the corresponding status bit is set and the ALERT / THERM2 pin is

asserted. Likewise, if the measured temperature is less than or equal to the low limit, the

corresponding status bit is set and the ALERT / THERM2 pin is asserted.

The data format for the limits must match the selected data format for the temperature so that if the

extended temperature range is used, the limits must be programmed in the extended data format.

The limit registers with multiple addresses are fully accessible at either address.

08h

R/W

External

Diode 1 Low

Limit High

Byte

128

6432

00h

(0°C)

0Eh

14h

R/W

External

Diode 1 Low

Limit Low

Byte

0.5

0.25

0.125

00h

15h

R/W

External

Diode 2 High

Limit High

Byte

128

6432

55h

(85°C)

16h

R/W

External

Diode 2 Low

Limit High

Byte

128

6432

00h

(0°C)

17h

R/W

External

Diode 2 High

Limit Low

Byte

0.5

0.25

0.125

00h

18h

R/W

External

Diode 2 Low

Limit Low

Byte

0.5

0.25

0.125

00h

2Ch

R/W

External

Diode 3 High

Limit High

Byte

128

6432

55h

(85°C)

2Dh

R/W

External

Diode 3 Low

Limit High

Byte

128

6432

00h

(0°C)

2Eh

R/W

External

Diode 3 High

Limit Low

Byte

0.5

0.25

0.125

00h

2Fh

R/W

External

Diode 3 Low

Limit Low

Byte

0.5

0.25

0.125

00h

Table 6.7 Temperature Limit Registers (continued)

ADDR.

R/W

DEFAULT

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