EMC1404 SMSC Corporation, EMC1404 Datasheet - Page 32

• Manufacturer Part Number: EMC1404
• Description: (EMC1403 / EMC1404) Temperature Sensor
• Manufacturer: SMSC Corporation

Revision 1.16 (03-15-07)
ADDR.
2Ch
2Dh
2Eh
2Fh
14h
15h
16h
17h
18h
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
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Diode 2 High
Diode 2 High
Diode 3 High
Diode 3 High
Diode 1 Low
Diode 2 Low
Diode 2 Low
Diode 3 Low
Diode 3 Low
REGISTER
Limit High
Limit High
Limit High
Limit High
Limit Low
Limit Low
Limit Low
Limit Low
Limit Low
External
External
External
External
External
External
External
External
External
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Table 6.7 Temperature Limit Registers (continued)
128
128
128
128
0.5
0.5
0.5
0.5
0.5
B7
DATASHEET
0.25
0.25
0.25
0.25
0.25
B6
64
64
64
64
32
0.125
0.125
0.125
0.125
0.125
B5
32
32
32
32
Section
B4
16
16
16
16
-
-
-
-
-
1°C Temperature Sensor with Beta Compensation
6.4).
B3
8
8
8
8
-
-
-
-
-
B2
4
4
4
4
-
-
-
-
-
B1
SMSC EMC1403/EMC1404
2
2
2
2
-
-
-
-
-
B0
1
1
1
1
-
-
-
-
-
DEFAULT
Datasheet
(85°C)
(85°C)
(0°C)
(0°C)
00h
55h
00h
00h
00h
55h
00h
00h
00h