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