tcn75a Microchip Technology Inc., tcn75a Datasheet - Page 19

• Manufacturer Part Number: tcn75a
• Description: 2-wire Serial Temperature Sensor
• Manufacturer: Microchip Technology Inc.

5.3.4
The TCN75A has a 16-bit read/write Temperature
Limit-Set register (T
two’s compliment format. This data represents a maxi-
mum temperature limit. If the ambient temperature
exceeds this specified limit, the TCN75A asserts an
alert output. (Refer to Section 5.3.4.3 “ALERT Output
Configuration”).
This register uses the nine Most Significant bits (MSbs)
and all other bits are “don’t cares”.
The power-up default value of the T
80°C, or <0101 0000 0>b in binary.
REGISTER 5-5:
© 2006 Microchip Technology Inc.
bit 15
bit 7
Legend:
R = Readable bit
-n = Value at POR
Upper Half:
Lower Half:
R/W-0
R/W-0
2
Sign
-1
°C
TEMPERATURE LIMIT-SET
REGISTER (T
SET
R/W-1
2
R-0
6
0
TEMPERATURE LIMIT-SET REGISTER (T
°C
) which contains a 9-bit data in
SET
W = Writable bit
‘1’ = Bit is set
)
R/W-0
2
R-0
5
0
°C
SET
register is
R/W-1
2
R-0
4
0
°C
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-0
2
R-0
3
0
°C
SET
) - ADDRESS <
R/W-0
2
R-0
2
0
°C
x = Bit is unknown
0000 0011
R/W-0
2
R-0
1
0
°C
TCN75A
DS21935C-page 19
>b
R/W-0
2
R-0
0
0
°C
bit 8
bit 0