EMC1403 Datasheet, PDF (34/55 Pages) SMSC Corporation – 1°C Temperature Sensor with Beta Compensation

ADDR.
14h
15h
16h
17h
18h
2Ch
2Dh
2Eh
2Fh
1°C Temperature Sensor with Beta Compensation
Data Sheet
Table 6.7 Temperature Limit Registers (continued)
R/W
REGISTER
B7
B6
B5
B4
B3
B2 B1 B0 DEFAULT
External
R/W
Diode 1 Low
Limit Low
0.5 0.25 0.125
-
-
-
-
-
00h
Byte
External
R/W
Diode 2 High
Limit High
128
64
32
16
8
4
2
1
55h
(85°C)
Byte
External
R/W
Diode 2 Low
Limit High
128
64
32
16
8
Byte
4
2
1
00h
(0°C)
External
R/W
Diode 2 High
Limit Low
0.5 0.25 0.125
-
-
-
-
-
00h
Byte
External
R/W
Diode 2 Low
Limit Low
0.5 0.25 0.125
-
-
-
-
-
00h
Byte
External
R/W
Diode 3 High
Limit High
128
64
32
16
8
4
2
1
55h
(85°C)
Byte
External
R/W
Diode 3 Low
Limit High
128
64
32
16
8
Byte
4
2
1
00h
(0°C)
External
R/W
Diode 3 High
Limit Low
0.5 0.25 0.125
-
-
-
-
-
00h
Byte
External
R/W
Diode 3 Low
Limit Low
0.5 0.25 0.125
-
-
-
-
-
00h
Byte
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).
DS20005272A-page 34
 2014 Microchip Technology Inc.