Rainbow-electronics LM77 Bedienungsanleitung

LM779-Bit + Sign Digital Temperature Sensor and ThermalWindow Comparator with Two-Wire InterfaceGeneral DescriptionThe LM77 is a digital temperature s

1.0 Functional Description (Continued)1.8 INTERNAL REGISTER STRUCTUREThere are four data registers in the LM77, selected by thePointer register. At po

1.0 Functional Description (Continued)1.9 POINTER REGISTER(Selects which registers will be read from or written to):P7 P6 P5 P4 P3 P2 P1 P000000 Regis

2.0 I2C Timing DiagramsDS100136-9Typical 2-Byte Read From Preset Pointer Location Such as Temp or Comparison RegistersDS100136-10Typical Pointer Set F

3.0 Application HintsThe temperature response graph inFigure 7depicts a typi-cal application designed to meet ACPI requirements. In thistype of applic

3.0 Application Hints (Continued)4.0 Typical ApplicationsDS100136-15Note: Event Interrupt mode is drawn as if the user is reading the part. If the use

4.0 Typical Applications (Continued)DS100136-17FIGURE 9. Remote HVAC temperature sensor communicates via 3 wires, including thermostat signals.DS10013

Physical Dimensions inches (millimeters) unless otherwise noted8-Lead (0.150" Wide) Molded Small Outline Package (SOP),JEDEC Registration Number

Physical Dimensions inches (millimeters) unless otherwise noted (Continued)LIFE SUPPORT POLICYNATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITIC

Simplified Block DiagramConnection DiagramOrdering InformationOrder Number Supply Voltage Package Supplied InLM77CIM-3 3.3V SOP8, M08A RailLM77CIMX-3

Pin Description (Continued)DS100136-3FIGURE 1. Typical ApplicationLM77www.national.com3

Absolute Maximum Ratings (Note 1)Supply Voltage −0.3V to 6.5VVoltage at any Pin −0.3V to (+VS+ 0.3V )Input Current at any Pin 5 mAPackage Input Curren

Logic Electrical Characteristics (Continued)DIGITAL DC CHARACTERISTICS Unless otherwise noted, these specifications apply for +VS=+5 Vdc±10% for LM77C

Logic Electrical Characteristics (Continued)SERIAL BUS DIGITAL SWITCHING CHARACTERISTICS Unless otherwise noted, these specifications apply for +VS=+5

Logic Electrical Characteristics (Continued)1.0 Functional DescriptionThe LM77 temperature sensor incorporates a band-gap typetemperature sensor, 10-b

1.0 Functional Description (Continued)terrupts just after reprogramming setpoints. Typically, sys-tem Interrupt inputs are masked prior to reprogrammi

1.0 Functional Description (Continued)1.4 TEMPERATURE DATA FORMATTemperature data can be read from the Temperature and SetPoint registers; and written