TCN75
TABLE 5-3:
D[15]
MSB
D[14]
D7
TEMPERATURE (TEMP) REGISTER, 16 BITS, READ ONLY
D[13]
D6
D[12]
D5
D[11]
D4
D[10]
D3
D[9]
D2
D[8]
D1
D[7]
LSB
D[6]
X
D[5]
X
D[4]
X
D[3]
X
D[2] D[1]
X
X
D[0]
X
The binary value in this register represents ambient temperature following a conversion cycle.
TABLE 5-4:
D[15]
MSB
D[14]
D7
TEMPERATURE SET POINT (T
SET
) REGISTER, 16 BITS, READ/WRITE
D[13]
D6
D[12]
D5
D[11]
D4
D[10]
D3
D[9]
D2
D[8]
D1
D[7]
LSB
D[6]
X
D[5]
X
D[4]
X
D[3]
X
D[2] D[1]
X
X
D[0]
X
TABLE 5-5:
D[15]
MSB
D[14]
D7
HYSTERESIS (T
HYST
) REGISTER, 16 BITS, READ/WRITE
D[13]
D6
D[12]
D5
D[11]
D4
D[10]
D3
D[9]
D2
D[8]
D1
D[7]
LSB
D[6]
X
D[5]
X
D[4]
X
D[3]
X
D[2] D[1]
X
X
D[0]
X
In the TEMP, T
SET
, and T
HYST
registers, each unit
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
+125°C
+25°C
+0.5°C
0°C
0.5°C
-25°C
-40°C
-55°C
TEMPERATURE TO DIGITAL
VALUE CONVERSION
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:
Name
TEMP
TSET
T
HYST
POINT
CONFIG
TCN75’S REGISTER SET SUMMARY
Description
Ambient Temperature
Temperature Setpoint
Temperature Hysteresis
Register Pointer
Configuration Register
Width
16
16
16
8
8
Read
X
X
X
X
X
X
X
X
X
Write
Notes
2’s Complement Format
2’s Complement Format
2’s Complement Format
©
2006 Microchip Technology Inc.
DS21490C-page 11
MICROCHIP [ MICROCHIP TECHNOLOGY ]
