PCT2075DP datasheet(9/37 Pages) NXP

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PCT2075

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Product data sheet

Rev. 3 — 21 May 2013

9 of 37

NXP Semiconductors

PCT2075

I2C-bus Fm+ digital temperature sensor and thermal watchdog

7.4 Register list

The PCT2075 contains four data registers beside the pointer register as listed in Table 7.

The pointer value, read/write capability and default content at power-up of the registers

are also shown in Table 7.

floating

0101 111

floating

0110 101

floating

0110 110

floating

0110 111

Table 6.

PCT2075 address table (TSOP6 package)

No.

Address pin coding

Slave address

1001 000

float

1001 001

1001 010

Table 5.

PCT2075 address table (SO8, TSSOP8, HWSON8 packages) …continued

No.

Address pin coding

Slave address

Table 7.

name

Pointer

value

R/W

POR

state

Description

Conf

01h

R/W

00h

Configuration register: contains a single 8-bit data

byte; to set the device operating condition; default = 0.

Temp

00h

read only

0000h

Temperature register: contains two 8-bit data bytes;

to store the measured Temp data.

Tos

03h

R/W

5000h

Overtemperature shutdown threshold register:

contains two 8-bit data bytes; to store the

overtemperature shutdown Tots limit; default = 80 C.

Thyst

02h

R/W

4B00h

Hysteresis register: contains two 8-bit data bytes;

to store the hysteresis Thys limit; default = 75 C.

Tidle

04h

R/W

00h

Temperature conversion cycle default to 100 ms.

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