1°C Temperature Sensor with Beta Compensation
Datasheet
Chapter 1 Block Diagram
VDD
EMC1403/04
Conversion Rate Register
Low Limit Registers
Switching
Current
High Limit Registers
DP1
DN1
External
Temperature
Register(s)
DP2
Anti-parallel
diodes
Analog
Mux
ΔΣ ADC
DN2
Internal
Temperature
Register
THERM Limit Register
THERM Hysteresis Register
Internal
Temp Diode
SMCLK
SMDATA
ALERT
Configuration Register
Interupt Masking
Status Registers
THERM
GND
1.1
Part Selection
The EMC1403 and EMC1404 device configuration is highlighted below.
Table 1.1 Part Selection
FUNCTIONALITY
DIODE 2
PART
NUMBER
SMBUS
ADDRESS
EXTERNAL
DIODES
DIODE 1 DEFAULT
CONFIGURATION
DEFAULT
PRODUCT
ID
CONFIGURATION
OTHER
EMC1403 - 1
100_1100b
2
Detect Diode w/
REC enabled
Detect Diode w/
REC enabled
Software
21h
programmable
and maskable
High Limits
Software
programmable
THERM Limits
EMC1404 - 1
100_1100b
3
Detect Diode w/
REC enabled
Fixed 2N3904 in
anti-parallel diode
configuration
Note 1.1
Software
25h
programmable
and maskable
High Limits
Software
programmable
THERM Limits
Note 1.1 External 2 and external 3 channels have beta configuration hard wired to ‘0111b’ and REC
enabled.
SMSC EMC1403/EMC1404
7
Revision 1.16 (03-15-07)
DATASHEET
SMSC [ SMSC CORPORATION ]
