TCN75(2002) データシートの表示（PDF） - Microchip Technology

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TCN75
(Rev.:2002)

2-Wire Serial Temperature Sensor and Thermal Monitor

Microchip Technology 

TCN75

TABLE 5-3: TEMPERATURE (TEMP) REGISTER, 16 BITS, READ ONLY

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

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 X X X X X X X

TABLE 5-4: TEMPERATURE SET POINT (TSET) REGISTER, 16 BITS, READ/WRITE

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 X X X X X X X

TABLE 5-5: HYSTERESIS (THYST) REGISTER, 16 BITS, READ/WRITE

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 X X X X X X X

In the TEMP, TSET, and THYST registers, each unit

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

is in 2's - complement binary format such that a reading

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

Temperature

+125°C

+25°C

+0.5°C

0°C

0.5°C

-25°C

-40°C

-55°C

Binary Value

0 11111010

0 00110010

0 00000001

0 00000000

1 11111111

1 11001110

1 10110000

1 10010010

HEX Value

0FA

032

001

00

1FF

1CE

1B0

192

TABLE 5-7: TCN75’S REGISTER SET SUMMARY

Name

TEMP

TSET

THYST

POINT

CONFIG

Description

Ambient Temperature

Temperature Setpoint

Temperature Hysteresis

Register Pointer

Configuration Register

Width

16

16

16

8

8

Read

X

X

X

X

X

Write

X

X

X

X

Notes

2's Complement Format

2's Complement Format

2's Complement Format

DS21490B-page 10

© 2002 Microchip Technology Inc.

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