NE1617ADS,112【PDF 7/30 页】IC TEMP MONITOR 16SSOP

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NE1617A

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 5 20 March 2012

7 of 30

NXP Semiconductors

NE1617A

Temperature monitor for microprocessor systems

[1] Any pull-up/pull-down resistor used to connect to GND or V

should be ?2 kW.

8.3 Registers

The device contains more than 9 registers. They are used to store the data of device

set-up and operation results. Depending on the bus communication (either read or write

operations), each register may be called by different names because each register may

have different sub-addresses or commands for read and write operations. For example,

the configuration register is called as WC for write mode and as RC for read mode.

Table 4

shows the names, commands and functions of all registers as well as the register

POR states.

Remark: Attempting to write to a read-command or read from a write-command will

produce an invalid result. The reserved registers are used for factory test purposes and

should not be written.

n.c.

0101 010

n.c.

0101 011

GND

1001 100

n.c.

1001 101

1001 110

Table 3.

Device slave address &continued

n.c. = not connected

ADD0

[1]

ADD1

[1]

Address byte

Table 4.

Command byte

POR state

Function

RIT

00h

0000 0000

read internal or local temp byte

RET

01h

0000 0000

read external or remote temp byte

02h

n/a

read status byte

03h

0000 0000

read configuration byte

RCR

04h

0000 0010

read conversion rate byte

RIHL

05h

0111 1111

read internal temp high limit byte

RILL

06h

1100 1001

read internal temp low limit byte

REHL

07h

0111 1111

read external temp high limit byte

RELL

08h

1100 1001

read external temp low limit byte

09h

n/a

write configuration byte

WCR

0Ah

n/a

write conversion rate byte

WIHL

0Bh

n/a

write internal temp high limit byte

WILL

0Ch

n/a

write internal temp low limit byte

WEHL

0Dh

n/a

write external temp high limit byte

WELL

0Eh

n/a

write external temp low limit byte

OSHT

0Fh

n/a

one-shot command

10h

n/a

reserved

11h

n/a

reserved

12h

n/a

reserved

13h

n/a

reserved

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