TCN75-3.3MPA TELCOM [TelCom Semiconductor, Inc], TCN75-3.3MPA Datasheet - Page 8

• Manufacturer Part Number: TCN75-3.3MPA
• Description: 2-WIRE SERIAL TEMPERATURE SENSOR AND THERMAL MONITOR
• Manufacturer: TELCOM [TelCom Semiconductor, Inc]

PRELIMINARY INFORMATION
Temperature (TEMP) Register, 16-bits, Read-only
temperature following a conversion cycle.
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
The TCN75's register set is summarized below
TCN75-04 6/16/97
TCN75
Temperature Register (TEMP)
Temperature Setpoint (T
Temperature Setpoint Register (T
Hysteresis Register (T
D[15]
D[15]
D[15]
MSB
MSB
MSB
Temperature
The binary value in this register represents ambient
In the TEMP, T
CONFIG
Name
POINT
TEMP
T
T
+125 C
– 0.5 C
+0.5 C
– 25 C
– 40 C
– 55 C
+25 C
HYST
SET
0 C
D[14]
D[14]
D[14]
D7
D7
D7
D[13]
D[13]
D[13]
D6
D6
D6
SET
Description
Ambient Temperature
Temperature Setpoint
Temperature Hysteresis
Register Pointer
Configuration Register
, and T
Binary Value
0 11111010
0 00110010
0 00000001
0 00000000
1 11111111
1 11001110
1 10110000
1 10010010
HYST
D[12]
D[12]
D[12]
D5
D5
D5
HYST
)
SET
D[11]
D[11]
D[11]
D4
D4
D4
registers, each unit value
) and Hysteresis (T
SET
)
D[10]
D[10]
D[10]
D3
D3
D3
HEX Value
1CE
0FA
1FF
1B0
032
001
192
00
D[9]
D[9]
D[9]
D2
D2
D2
Width
16
16
16
8
8
D[8]
D[8]
D[8]
D1
D1
D1
8
HYST
D[7]
LSB
D[7]
LSB
D[7]
LSB
Read
) Register, 16-bits, Read-Write:
X
X
X
X
X
SENSOR AND THERMAL MONITOR
D[6]
D[6]
D[6]
2-WIRE SERIAL TEMPERATURE
X
X
X
Write
X
X
X
X
D[5]
D[5]
D[5]
X
X
X
D[4]
D[4]
D[4]
Notes
2's Complement Format
2's Complement Format
2's Complement Format
X
X
X
D[3]
D[3]
D[3]
X
X
X
D[2]
D[2]
D[2]
X
X
X
D[1]
D[1]
D[1]
X
X
X
D[0]
D[0]
D[0]
X
X
X