1°C Triple Temperature Sensor with Resistance Error Correction & Hotter of Two Zones

Datasheet

SMSC EMC1053

21

Revision 1.44 (04-14-08)

DATASHEET

into the External Diode 2 Data Registers. The Internal Diode and External Diode 1 Data Registers

remain unaffected.

Bit 0 - REC - controls the Resistance Error Correction circuitry

'0' - The Resistance Error Correction circuitry is disabled.

'1' (default) - The Resistance Error Correction circuitry is active and will automatically correct for

up to 100 ohms of series resistance in the diode lines for both External Diode 1 and External Diode

2 channels.

4.6

One Shot Register - (0Fh)

The One Shot Register is an address place holder for the one-shot command. Writing to the address

initiates the command. The data written is not important and is not stored. Reading from the one-shot

registers will always return 00h.

4.7

Ideality Configuration Registers (27h - 28h)

The Ideality Configuration Registers store the ideality correction factor that is applied to each external

diode.

The table below shows the ideality factor settings for the Ideality Configuration registers. Shading

indicates power-up default. All codes that are not listed are reserved and should not be used.

Beta Compensation and Resistance Error Correction automatically correct for most diode ideality

errors, therefore it is not recommended that these settings be updated without consulting SMSC.

Table 4.6 One Shot Registers

ADDR

REGISTER

B7

B6

B5

B4

B3

B2

B1

B0

DEFAULT

0Fh

One Shot

Conversion

Writing to this register address initiates the one-shot. The data is not

important and is not stored

00h

Table 4.7 Ideality Configuration Registers

ADDR

REGISTER

B7

B6

B5

B4

B3

B2

B1

B0

DEFAULT

27h

Diode 1 Ideality

Correction Factor

-

-

B5

B4

B3

B2

B1

B0

12h

(1.008)

28h

Diode 2 Ideality

Correction Factor

-

-

B5

B4

B3

B2

B1

B0

12h

(1.008)