1°C Temperature Sensor with Beta Compensation
Datasheet
Table 6.1 Register Set in Hexadecimal Order (continued)
REGISTER
ADDRESS
DEFAULT
VALUE
R/W
REGISTER NAME
FUNCTION
PAGE
Internal Diode
THERM Limit
Stores the 8-bit critical temperature
limit for the Internal Diode
55h
(85°C)
20h
21h
R/W
Page 33
Stores the 8-bit hysteresis value
that applies to all THERM limits
0Ah
(10°C)
R/W
R/W
THERM Hysteresis
Consecutive ALERT
Controls the number of out-of-limit
conditions that must occur before
an interrupt is asserted
22h
70h
Page 35
Page 28
External Diode 2
Data High Byte
Stores the integer data for External
Diode 2
23h
24h
R
R
00h
00h
External Diode 2
Data Low Byte
Stores the fractional data for
External Diode 2
Stores the Beta Compensation
circuitry settings for External Diode
1
External Diode 1
Beta Configuration
25h
26h
R/W
R/W
08h
Page 36
Page 36
Stores the Beta Compensation
circuitry settings for External Diode
2
External Diode 2
Beta Configuration
08h or 07h
External Diode 1
Ideality Factor
Stores the ideality factor for
External Diode 1
12h
(1.008)
27h
28h
29h
2Ah
2Bh
2Ch
2Dh
2Eh
2Fh
30h
31h
R/W
R/W
R
Page 37
Page 37
Page 28
External Diode 2
Ideality Factor
Stores the ideality factor for
External Diode 2
12h
(1.008)
Internal Diode Data
Low Byte
Stores the fractional data for the
Internal Diode
00h
00h
00h
External Diode 3
High Byte
Stores the integer data for External
Diode 3
R
Page 28
External Diode 3 Low
Byte
Stores the fractional data for
External Diode 3
R
External Diode 3
High Limit High Byte
Stores the integer portion of the
high limit for External Diode 3
55h
(85°C)
R/W
R/W
R/W
R/W
R/W
R/W
External Diode 3 Low
Limit High Byte
Stores the integer portion of the
low limit for External Diode 3
00h
(0°C)
Page 31
External Diode 3
High Limit Low Byte
Stores the fractional portion of the
high limit for External Diode 3
00h
00h
External Diode 3 Low
Limit Low Byte
Stores the fractional portion of the
low limit for External Diode 3
External Diode 3
THERM Limit
Stores the 8-bit critical temperature
limit for External Diode 3
55h
(85°C)
Page 33
Page 37
External Diode 3
Ideality Factor
Stores the ideality factor for
External Diode 3
12h
(1.008)
35h
36h
37h
R-C
R-C
R
High Limit Status
Low Limit Status
Status bits for the High Limits
Status bits for the Low Limits
Status bits for the THERM Limits
00h
00h
00h
Page 38
Page 39
Page 39
THERM Limit Status
SMSC EMC1403/EMC1404
Revision 1.16 (03-15-07)
DATA2S7HEET
SMSC [ SMSC CORPORATION ]
