TCN75-5.0MPA データシートの表示（PDF） - TelCom Semiconductor, Inc
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TCN75-5.0MPA Datasheet PDF : 10 Pages
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PRELIMINARY INFORMATION
2-WIRE SERIAL TEMPERATURE
SENSOR AND THERMAL MONITOR
TCN75
Temperature (TEMP) Register, 16-bits, Read-only
The binary value in this register represents ambient
temperature following a conversion cycle.
Temperature Register (TEMP)
D[15] D[14] D[13] D[12] D[11] D[10] D[9] D[8] D[7]
MSB D7 D6
D5 D4
D3 D2 D1 LSB
D[6] D[5]
X
X
D[4] D[3]
X
X
D[2] D[1] D[0]
X
X
X
Temperature Setpoint (TSET) and Hysteresis (THYST) Register, 16-bits, Read-Write:
Temperature Setpoint Register (TSET)
D[15] D[14] D[13] D[12] D[11] D[10] D[9] D[8] D[7]
MSB D7 D6
D5 D4
D3 D2 D1 LSB
D[6] D[5]
X
X
D[4] D[3]
X
X
D[2] D[1] D[0]
X
X
X
Hysteresis Register (THYST)
D[15] D[14] D[13] D[12] D[11] D[10] D[9] D[8] D[7]
MSB D7 D6
D5 D4
D3 D2 D1 LSB
D[6] D[5]
X
X
D[4] D[3]
X
X
D[2] D[1] D[0]
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 the following table.
Temperature to Digital Value Conversion
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
The TCN75's register set is summarized below
Name
Description
TEMP
TSET
THYST
POINT
CONFIG
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
8
TCN75-04 6/16/97
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