MCP9800A0-M/MS MICROCHIP [Microchip Technology], MCP9800A0-M/MS Datasheet - Page 20

• Manufacturer Part Number: MCP9800A0-M/MS
• Description: 2-Wire High-Accuracy Temperature Sensor
• Manufacturer: MICROCHIP [Microchip Technology]

MCP9800/1/2/3
5.3.3
The
Temperature Hysteresis register that contains a 9-bit
data in two’s compliment format. This register is used
to set a hysteresis for the T
represents a minimum temperature limit. If the ambient
temperature drifts below the specified limit, the
MCP9800/1/2/3 asserts an alert output (refer to
Section 5.3.4.3 “ALERT Output
This register uses the nine Most Significant bits (MSbs)
and all other bits are “don’t cares”.
The power-up default value of T
or <0100 1011 0>b in binary.
REGISTER 5-4:
DS21909C-page 20
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
MCP9800/1/2/3
°C
TEMPERATURE HYSTERESIS
REGISTER (T
R/W-1
2
R-0
6
0
TEMPERATURE HYSTERESIS REGISTER (T
°C
has
SET
HYST
limit. Therefore, the data
W = Writable bit
‘1’ = Bit is set
a
HYST
)
Configuration”).
R/W-0
2
16-bit
R-0
5
0
°C
register is 75°C,
read/write
R/W-0
2
R-0
4
0
°C
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-1
2
R-0
3
0
°C
HYST
R/W-0
2
R-0
2
) – ADDRESS <
0
°C
 2010 Microchip Technology Inc.
x = Bit is unknown
R/W-1
2
R-0
1
0
°C
0000 0010
R/W-1
2
R-0
0
0
>b
°C
bit 8
bit 0