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
Stores the 8-bit high limit for the
Internal Diode (mirrored at address
05h)
Internal Diode High
Limit
55h
(85°C)
0Bh
0Ch
0Dh
0Eh
R/W
Stores the 8-bit low limit for the
Internal Diode (mirrored at address
06h)
Internal Diode Low
Limit
00h
(0°C)
R/W
R/W
R/W
Page 29
Stores the integer portion of the
high limit for the External Diode
(mirrored at register 07h)
External Diode High
Limit High Byte
55h
(85°C)
Stores the integer portion of the
low limit for the External Diode
(mirrored at register 08h)
External Diode Low
Limit High Byte
00h
(0°C)
A write to this register initiates a
one shot update.
0Fh
10h
11h
12h
13h
14h
19h
1Fh
20h
21h
W
One shot
00h
00h
00h
00h
00h
00h
Page 30
Page 26
Page 30
Page 30
External Diode Data
Low Byte
Stores the fractional data for the
External Diode
R
Scratchpad register for software
compatibility
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Scratchpad
Scratchpad
Scratchpad register for software
compatibility
External Diode High
Limit Low Byte
Stores the fractional portion of the
high limit for the External Diode
Page 29
External Diode Low
Limit Low Byte
Stores the fractional portion of the
low limit for the External Diode
External Diode
THERM Limit
Stores the 8-bit critical temperature
limit for the External Diode
55h
(85°C)
Page 30
Page 31
Channel Mask
Register
Controls the masking of individual
channels
00h
Internal Diode
THERM Limit
Stores the 8-bit critical temperature
limit for the Internal Diode
55h
(85°C)
Page 30
Stores the 8-bit hysteresis value
that applies to all THERM limits
0Ah
(10°C)
THERM Hysteresis
Consecutive ALERT
Controls the number of out-of-limit
conditions that must occur before
an interrupt is asserted
22h
25h
R/W
R/W
70h
08h
Page 31
Page 33
Stores the Beta Compensation
circuitry settings for External Diode
1
External Diode 1
Beta Configuration
External Diode 1
Ideality Factor
Stores the ideality factor for
External Diode 1
12h
(1.008)
27h
29h
40h
R/W
R
Page 34
Page 26
Page 35
Internal Diode Data
Low Byte
Stores the fractional data for the
Internal Diode
00h
00h
Controls the digital filter setting for
the External Diode channel
R/W
Filter Control
SMSC EMC1402
Revision 1.16 (03-15-07)
DATA2S5HEET
SMSC [ SMSC CORPORATION ]
