Dual Remote/Local Temperature Sensors with

SMBus Serial Interface

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11

REGISTER

ADDRESS

POR STATE

FUNCTION

RLTS

00 h

0000 0000

(0

°C)

Read internal temperature

RRTE

01 h

0000 0000

(0

°C)

Read external channel 1 temperature if bit 3 of configuration register is 0;

Read external channel 2 temperature if bit 3 of configuration register is 1

RSL1

02 h

1000 0000

Read status register 1

RCL

03 h

0000 0000

Read configuration byte (fault queue should be disabled at startup)

RCRA

04 h

0000 0110

Read conversion rate byte

RLHN

05 h

0100 0110

(+70

°C)

Read internal ALERT high limit

RLLI

06 h

1100 1001

(-55

°C)

Read internal ALERT low limit

RRHI

07 h

0100 0110

(+70

°C)

Read external channel 1 ALERT high limit if bit 3 of configuration register is 0;

Read external channel 2 ALERT high limit if bit 3 of configuration register is 1

RRLS

08 h

1100 1001

(-55

°C)

Read external channel 1 ALERT low limit if bit 3 of configuration register is 0;

Read external channel 2 ALERT low limit if bit 3 of configuration register is 1

WCA

09 h

0010 0000

Write configuration byte

WCRW

0A h

0000 0110

Write conversion rate byte

WLHO

0B h

0100 0110

(+70

°C)

Write internal ALERT high limit

WLLM

0C h

1100 1001

(-55

°C)

Write internal ALERT low limit

WRHA

0D h

0100 0110

(+70

°C)

Write external channel 1 ALERT high limit if bit 3 of configuration register is 0;

Write external channel 2 ALERT high limit if bit 3 of configuration register is 1

WRLN

0E h

1100 1001

(-55

°C)

Write external channel 1 ALERT low limit if bit 3 of configuration register is 0;

Write external channel 2 ALERT low limit if bit 3 of configuration register is 1

OSHT

0F h

0000 0000

One shot

REET

10 h

0000 0000

Read extended temp of external channel 1 if bit 3 of configuration register is 0;

Read extended temp of external channel 2 if bit 3 of configuration register is 1

RIET

11 h

0000 0000

Read internal extended temperature

RSL2

12 h

0000 0000

Read status register 2

RWO2E

16 h

0111 1000

(+120

°C)

Read/write external OT2 limit for channel 1 if bit 3 of configuration register is 0;

Read/write external OT2 limit for channel 2 if bit 3 of configuration register is 1

RWO2I

17 h

0101 1010

(+90

°C)

Read/write internal OT2 limit

RWO1E

19 h

0101 1010

(+90

°C)

Read/write external OT1 limit for channel 1 if bit 3 of configuration register is 0;

Read/write external OT1 limit for channel 2 if bit 3 of configuration register is 1

RWO1I

20 h

0100 0110

(+70

°C)

Read/write internal OT1 limit

Table 5. Command-Byte Register Bit Assignments