Multiple Channel 1°C Temperature Sensors with Beta Compensation
Datasheet
7.7
Scratchpad Registers
Table 7.8 Scratchpad Register
ADDR
11h
12h
R/W
R/W
R/W
REGISTER
Scratchpad
Scratchpad
B7
7
7
B6
6
6
B5
5
5
B4
4
4
B3
3
3
B2
2
2
B1
1
1
B0
0
0
DEFAULT
00h
00h
The Scratchpad Registers are Read / Write registers that are used for place holders to be software
compatible with legacy programs. Reading from the registers will return what is written to them.
7.8
One Shot Register
Table 7.9 One Shot Register
ADDR.
0Fh
R/W
W
REGISTER
One Shot
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
00h
Writing to this register initiates a single conversion cycle. Data
is not stored and always reads 00h
The One Shot Register is used to initiate a one shot command. Writing to the one shot register when
the device is in standby mode and BUSY bit (in Status Register) is ‘0’, will immediately cause the ADC
to update all temperature measurements. Writing to the One Shot Register while the device is in active
mode will have no effect.
7.9
Therm Limit Registers
Table 7.10 Therm Limit Registers
ADDR.
R/W
REGISTER
External
Diode 1
Therm Limit
External
Diode 2
Therm Limit
Internal Diode
Therm Limit
Therm
Hysteresis
External
Diode 3
Therm Limit
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
55h
(85°C)
55h
(85°C)
55h
(85°C)
0Ah
(10°C)
55h
(85°C)
19h
R/W
128
64
32
16
8
4
2
1
1Ah
R/W
128
64
32
16
8
4
2
1
20h
21h
R/W
R/W
128
128
64
64
32
32
16
16
8
8
4
4
2
2
1
1
30h
R/W
128
64
32
16
8
4
2
1
The Therm Limit Registers are used to determine whether a critical thermal event has occurred. If the
measured temperature exceeds the Therm Limit, the THERM pin is asserted. The limit setting must
match the chosen data format of the temperature reading registers.
Revision 1.41 (02-23-12)
34
SMSC EMC1413 / EMC1414
DATASHEET
SMSC [ SMSC CORPORATION ]
