TCN75AVOA datasheet(18/40 Pages) MICROCHIP

18 / 40 page

TCN75A

DS21935D-page 18

 2010 Microchip Technology Inc.

5.3.2

SENSOR CONFIGURATION

The TCN75A has an 8-bit read/write Configuration

features. These features include shutdown, ALERT

output select as comparator or interrupt output, ALERT

output polarity, fault queue cycle, temperature

measurement resolution and One-shot mode (single

conversion while in shutdown). These functions are

described in detail in the following sections.

CONFIGURATION REGISTER (CONFIG) — ADDRESS

<0000 0001>b

R/W-0

One-Shot

Resolution

Fault Queue

ALERT

Polarity

COMP/INT

Shutdown

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7

ONE-SHOT

bit

= Enabled

= Disabled (Power-up default)

bit 6-5

 ADC RESOLUTION bits

= 9 bit or 0.5°C (Power-up default)

= 10 bit or 0.25°C

= 11 bit or 0.125°C

= 12 bit or 0.0625°C

bit 4-3

FAULT QUEUE

bits

= 1 (Power-up default)

bit 2

ALERT POLARITY

bit

= Active-high

= Active-low (Power-up default)

bit 1

COMP/INT

bit

= Interrupt mode

= Comparator mode (Power-up default)

bit 0

SHUTDOWN

bit

= Enable

= Disable (Power-up default)

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