PCT2202 datasheet(20/30 Pages) NXP

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PCT2202

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Product data sheet

Rev. 1.1 — 14 August 2015

20 of 30

NXP Semiconductors

PCT2202

Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor

(1) The value of A0 and A1 bits are determined by the A0 pin.

(2) Master should leave SDA HIGH to terminate a single-byte read operation.

(3) Master should leave SDA HIGH to terminate a two-byte read operation.

Fig 16. I2C-bus timing diagram for ‘read word’ format

SCL

SDA

A1(1)

A0(1)

R/W

ACK by

PCT2202

ACK by

PCT2202

START

by master

Frame 1 I2C-bus slave address byte

Frame 2 Pointer register byte

SCL

(cont.)

SDA

(cont.)

ACK by

PCT2202

ACK by

master(2)

Frame 3 I2C-bus slave address byte

Frame 4 Data byte 1 read register

002aah467

SCL

(cont.)

SDA

(cont.)

ACK by

master(3)

STOP

by master

Frame 5 Data byte 2 read register

A1(1)

A0(1)

R/W

START

by master

from

PCT2202

STOP

by master

from

PCT2202

(1) The value of A0 and A1 bits are determined by the A0 pin.

Fig 17. Timing diagram for SMBus ALERT

SCL

SDA

002aah468

R/W

ACK by

PCT2202

status

NACK by

master

START

by master

Frame 1 SMBus ALERT Response Address byte

Frame 2 slave address from PCT2202

ALERT

STOP by

master

from

PCT2202

(1)

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