© 2006 Microchip Technology Inc.

DS21490C-page 11

TCN75

TABLE 5-3:

TEMPERATURE (TEMP) REGISTER, 16 BITS, READ ONLY

The binary value in this register represents ambient temperature following a conversion cycle.

TABLE 5-4:

TABLE 5-5:

value represents one-half degree (Celsius). The value

is in 2’s – complement binary format such that a read-

ing of 000000000b corresponds to 0°C. Examples of

this temperature to binary value relationship are shown

in Table 5-6.

TABLE 5-6:

TEMPERATURE TO DIGITAL

VALUE CONVERSION

TABLE 5-7:

TCN75’S REGISTER SET SUMMARY

D[15]

D[14]

D[13]

D[12]

D[11]

D[10]

D[9]

D[8]

D[7]

D[6]

D[5]

D[4]

D[3]

D[2]

D[1]

D[0]

MSB

D7

D6

D5

D4

D3

D2

D1

LSB

XX

X

X

X

X

X

D[15]

D[14]

D[13]

D[12]

D[11]

D[10]

D[9]

D[8]

D[7]

D[6]

D[5]

D[4]

D[3]

D[2]

D[1]

D[0]

MSB

D7

D6

D5

D4

D3

D2

D1

LSB

XX

X

X

X

X

X

D[15]

D[14]

D[13]

D[12]

D[11]

D[10]

D[9]

D[8]

D[7]

D[6]

D[5]

D[4]

D[3]

D[2]

D[1]

D[0]

MSB

D7

D6

D5

D4

D3

D2

D1

LSB

XX

X

X

X

X

X

Temperature

Binary Value

HEX Value

+125°C

0 11111010

0FA

+25°C

0 00110010

032

+0.5°C

0 00000001

001

0°C

0 00000000

00

0.5°C

1 11111111

1FF

-25°C

1 11001110

1CE

-40°C

1 10110000

1B0

-55°C

1 10010010

192

Name

Description

Width

Read

Write

Notes

TEMP

Ambient Temperature

16

X

2’s Complement Format

TSET

Temperature Setpoint

16

XX

2’s Complement Format

Temperature Hysteresis

16

XX

2’s Complement Format

POINT

Register Pointer

8

XX

CONFIG

Configuration Register

8

XX