EMC1001
1.5°C SMBus
Temperature Sensor in
Miniature SOT-23
PRODUCT FEATURES
General Description
The EMC1001 is a tiny SMBus temperature sensor with
±1.5
°
C accuracy and two interrupts. Packaged in a
SOT23-6, the EMC1001 provides an accurate, low-cost,
low-current, solution for critical temperature monitoring
in a PC or embedded applications.
The EMC1001 generates two separate interrupts with
programmable thermal trip points. The
THERM
output
operates as a thermostat with programmable threshold
and hysteresis. The
ALERT
output can be configured
as a maskable SMBus alert with programmable
window comparator limits, or as a second
THERM
output. An efficient fan control system can be created
since this output may be used to control a fan.
A power down mode extends battery life in portable
applications.
Each part number may be configured to respond to one
of four separate SMBus addresses.
Datasheet
Features
Self Contained Internal Temperature Sensor
— 0.25°C resolution
—
±1.5°C
Accuracy 40°C to 85°C
Small 6-lead SOT lead-free RoHS compliant
packages
SMBus address selected by external resistor
— Select 1 of 4 per package, 8 addresses available
Maskable Interrupt using
ALERT
One-shot Command during standby
Low Power, 3.0V to 3.6V Supply
— 47uA at 0.0625 Conversions per Second (Typical)
— 4.8uA in Standby (Typical)
SMBus 2.0 Compliant interface
Programmable temperature conversion rate
Applications
Desktop and Notebook Computers
Thermostats
Smart batteries
Industrial/Automotive
Other Electronic Systems
Simplified Block Diagram
EMC1001
Address Pointer Register
Switching
Current
Limit Comparator
Conversion Rate Register
High Limit Registers
Digital Mux
Low Limit Registers
THERM Limit Register
THERM Hysteresis Register
Configuration Register
Status Register
Interrupt Masking
SMBus Interface
Internal
Temp Diode
10-bit
delta-sigma
ADC
Temperature
Register
SMCLK
SMDATA
ALERT
THERM
SMSC EMC1001
DATASHEET
Revision 1.6 (01-29-07)
SMSC [ SMSC CORPORATION ]
