1°C Temperature Sensor with Beta Compensation
Datasheet
Table 6.7 Temperature Limit Registers (continued)
ADDR.
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
External
Diode 1 Low
Limit Low
Byte
14h
R/W
0.5
0.25 0.125
-
-
-
-
-
00h
External
Diode 2 High
Limit High
Byte
55h
(85°C)
15h
16h
17h
18h
2Ch
2Dh
2Eh
2Fh
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
128
128
0.5
64
64
32
32
16
16
-
8
8
-
4
4
-
2
2
-
1
1
-
External
Diode 2 Low
Limit High
Byte
00h
(0°C)
External
Diode 2 High
Limit Low
Byte
0.25 0.125
0.25 0.125
00h
00h
External
Diode 2 Low
Limit Low
Byte
0.5
-
-
-
-
-
External
Diode 3 High
Limit High
Byte
55h
(85°C)
128
128
0.5
64
64
32
32
16
16
-
8
8
-
4
4
-
2
2
-
1
1
-
External
Diode 3 Low
Limit High
Byte
00h
(0°C)
External
Diode 3 High
Limit Low
Byte
0.25 0.125
0.25 0.125
00h
00h
External
Diode 3 Low
Limit Low
Byte
0.5
-
-
-
-
-
The device contains both high and low limits for all temperature channels. If the measured temperature
exceeds the high limit, then the corresponding status bit is set and the ALERT pin is asserted.
Likewise, if the measured temperature is less than or equal to the low limit, the corresponding status
bit is set and the ALERT pin is asserted.
The data format for the limits must match the selected data format for the temperature so that if the
extended temperature range is used, the limits must be programmed in the extended data format.
The limit registers with multiple addresses are fully accessible at either address.
When the device is in standby mode, updating the limit registers will have no affect until the next
conversion cycle occurs. This can be initiated via a write to the One Shot Register or by clearing the
RUN / STOP bit in the Configuration Register (see Section 6.4).
Revision 1.16 (03-15-07)
SMSC EMC1403/EMC1404
DATA3S2HEET
SMSC [ SMSC CORPORATION ]
