EMC1402-2-ACZL-TR View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

MFG CO.

EMC1402-2-ACZL-TR

1°C Temperature Sensor with Beta Compensation

SMSC -> Microchip 

Prev 21 22 23 24 25 26 27 28 29 30 Next

1°C Temperature Sensor with Beta Compensation

Datasheet

REGISTER

ADDRESS

40h

FDh

FEh

FFh

Table 6.1 Register Set in Hexadecimal Order (continued)

R/W

REGISTER NAME

FUNCTION

DEFAULT

VALUE

PAGE

R/W

Filter Control

Controls the digital filter setting for

the External Diode channel

00h

Page 34

R

Product ID

Stores a fixed value that identifies

each product

Table 6.21

Page 34

R

SMSC ID

Stores a fixed value that

represents SMSC

5Dh

Page 35

R

Revision

Stores a fixed value that

represents the revision number

01h or 04h Page 35

6.1

6.2

Data Read Interlock

When any temperature channel high byte register is read, the corresponding low byte is copied into

an internal ‘shadow’ register. The user is free to read the low byte at any time and be guaranteed that

it will correspond to the previously read high byte. Regardless if the low byte is read or not, reading

from the same high byte register again will automatically refresh this stored low byte data.

Temperature Data Registers

ADDR

00h

29h

01h

10h

Table 6.2 Temperature Data Registers

R/W

REGISTER

B7

B6

B5 B4 B3

R

Internal Diode

High Byte

128

64

32 16 8

R

Internal Diode

Low Byte

0.5

0.25 0.125

-

-

R

External Diode

High Byte

128

64

32 16 8

R

External Diode

Low Byte

0.5

0.25 0.125

-

-

B2 B1 B0 DEFAULT

4

2

1

00h

-

-

-

00h

4

2

1

00h

-

-

-

00h

As shown in Table 6.2, all temperatures are stored as an 11-bit value with the high byte representing

the integer value and the low byte representing the fractional value left justified to occupy the MSBits.

6.3

Status Register

Table 6.3 Status Register

ADDR R/W REGISTER

B7

B6

02h R-C

Status

BUSY IHIGH

B5

ILOW

B4

B3

B2

B1

B0

DEFAULT

EHIGH ELOW FAULT ETHERM ITHERM

00h

The Status Register reports the operating status of the Internal Diode and External Diode 1 channels.

When any of the bits are set (excluding the BUSY bit) either the ALERT or THERM pin is being

asserted.

SMSC EMC1402

25

DATASHEET

Revision 2.0 (08-10-12)

Share Link: