MCP9805-BE/ST Microchip Technology, MCP9805-BE/ST Datasheet - Page 8

• Manufacturer Part Number: MCP9805-BE/ST
• Description: IC,TEMPERATURE SENSOR,TSSOP,8PIN,PLASTIC
• Manufacturer: Microchip Technology

Specifications of MCP9805-BE/ST

• Rohs Compliant: YES
• Function: Temp Monitoring System (Sensor)
• Topology: ADC (Sigma Delta), Register Bank
• Sensor Type: Internal
• Sensing Temperature: -40°C ~ 125°C
• Output Type: I²C™/SMBus™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP
• Temperature Threshold: Programmable
• Full Temp Accuracy: 3 C
• Digital Output - Bus Interface: I2C, SMBus
• Digital Output - Number Of Bits: 10 bit
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 20 C
• Supply Current: 500 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MCP9805
4.0
The MCP9805 temperature sensors consist of a band
gap
Analog-to-Digital
user-programmable
FIGURE 4-1:
DS21977B-page 8
temperature
FUNCTIONAL DESCRIPTION
A0
Register Pointer
Converter
A1
Register Structure Block Diagram.
registers
Device Identification and Revision Register
sensor,
Temperature Lower-Boundary (T
Temperature Upper-Boundary (T
Manufacturer Identification Register
Critical Temperature Limit (T
Temperature Event Output
A2
Temperature Register (T
Device Capability Register
Measurement Resolution
Measurement Accuracy
(
Configuration Register
Measurement Range
using
a
Event
ADC)
Delta-Sigma
a
Event Output Polarity, Active-High/Low
Continuous Conversion or Shutdown
Event Boundary Window Lock bit
Event Output Comparator/Interrupt
Enable/Disable Event Output
2-wire
Clear Event Output Interrupt
Critical Event Output only
Critical Boundary Trip Lock
and
Event Output Hysteresis
V
Event Output Status
DD
A
CRIT
)
LOWER
UPPER
)
GND
SMBus/Standard mode I
protocol. Figure 4-1 shows a block diagram of the
register structure.
)
)
SMBus/Standard I
© 2005 Microchip Technology Inc.
2
SDA
C compatible serial interface
Interface
Temperature
Band Gap
Sensor
SCLK
ADC
2
C™