LM92CIMX/NOPB National Semiconductor, LM92CIMX/NOPB Datasheet
LM92CIMX/NOPB
Specifications of LM92CIMX/NOPB
*LM92CIMX/NOPB
LM92CIMX
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LM92CIMX/NOPB Summary of contents
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... Serial Bus interface ■ Separate open-drain outputs for Interrupt and Critical Temperature shutdown 2 I C® registered trademark of Philips Corporation. © 2010 National Semiconductor Corporation LM92 ■ Shutdown mode to minimize power consumption ■ LM92s can be connected to a single bus ■ 12-bit + sign output ■ ...
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Simplified Block Diagram Connection Diagram Ordering Information Order Number LM92CIM LM92CIMX Pin Descriptions Label Pin # SDA 1 Serial Bi-Directional Data Line. Open Drain Output SCL 2 Serial Bus Clock Input T_CRIT_A 3 Critical Temperature Alarm Open Drain Output GND ...
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Typical Application 10105103 FIGURE 1. 3 www.national.com ...
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Absolute Maximum Ratings Supply Voltage Voltage at any Pin Input Current at any Pin Package Input Current (Note 2) T_CRIT_A and INT Output Sink Current T_CRIT_A and INT Output Voltage Storage Temperature ESD Susceptibility (Note 4) Human Body Model Machine ...
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Digital DC Characteristics Unless otherwise noted, these specifications apply for + all other limits +25 °C, unless otherwise noted. MIN MAX A J Symbol Parameter V SDA and SCL Logical “1” Input ...
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Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating the device beyond its rated operating conditions. Note 2: When the input voltage (V ) ...
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Note 10: 12 bits + sign, two's complement Note 11: Linearity Error is defined as the worse case difference of an actual reading to that of a calculated reading derived from the straight line whose endpoints are measured at 30°C ...
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Functional Description The LM92 temperature sensor incorporates a band-gap type temperature sensor, 13-bit ADC, and a digital comparator with user-programmable upper and lower limit values. The comparator activates either the INT line for temperatures out- side the T and ...
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Note: Event Interrupt mode is drawn as if the user is reading the part. If the user doesn't read, the outputs would go low and stay that way until the LM92 is read. Comparator Interrupt Mode is drawn as if ...
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SHUTDOWN MODE Shutdown mode is enabled by setting the shutdown bit in the Configuration register via the Serial Bus. Shutdown mode re- duces power supply current to 5 μA typical. T_CRIT_A is reset if previously set. Since conversions are ...
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Alternatively, the master can issue clock cycles until SDA goes high, at which time issuing a “Stop” condition will reset the LM92. FIGURE 4. Inadvertent 8-Bit Read from 16-Bit Register where D7 is Zero (“0”) 1.9 POINTER ...
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D5–D7: These bits are used for production testing and must be kept zero for normal operation. 1. AND T_CRIT_A REGISTERS HYST LOW HIGH (Read/Write): D15 D14 D13 D12 D11 Sign MSB Bit 10 Bit 9 ...
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Timing Diagrams Typical 2-Byte Read From Preset Pointer Location Such as Temp or Comparison Registers Typical Pointer Set Followed by Immediate Read for 2-Byte Register such as Temp or Comparison Registers Typical 1-Byte Read from Configuration ...
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Application Hints The temperature response graph in application designed to meet ACPI requirements. In this type of application, the temperature scale is given an arbitrary val "granularity", or the window within which temperature notification events should occur. ...
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Typical Applications FIGURE 9. Remote HVAC temperature sensor communicates via 3 wires, including thermostat signals. FIGURE 8. Typical Application 15 10105116 10105117 www.national.com ...
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FIGURE 10. ACPI Compatible Terminal Alarm Shutdown. By powering the LM92 from auxilary output of the power supply, a non-functioning overheated computer can be powered down to preserve as much of the system as possible. www.national.com 16 10105119 ...
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Physical Dimensions inches (millimeters) unless otherwise noted 8-Lead (0.150 Wide) Molded Small Outline Package (SOP), JEDEC Order Number LM92CIM or LM92CIMX NS Package Number M08A 17 www.national.com ...
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