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MAX6662 数据表(PDF) 5 Page - Maxim Integrated Products |
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MAX6662 数据表(HTML) 5 Page - Maxim Integrated Products |
5 / 9 page 12-Bit + Sign Temperature Sensor with SPI-Compatible Serial Interface _______________________________________________________________________________________ 5 For example: If THIGH is set to 100°C and THYST is set to 20°C, ALERT does not assert until temperature exceeds 100°C. If the temperature is then read through the serial interface, ALERT deasserts. ALERT asserts again when temperature is less than 80°C (Figure 2). Comparator Mode In the comparator mode, ALERT is asserted when tem- perature exceeds the value in the THIGH register, or is lower than the value in the TLOW register. ALERT deasserts when temperature is less than THIGH - THYST or greater than TLOW + THYST. Reading the registers does not deassert ALERT. For example: If THIGH is set to 100°C and TLOW is set to 80°C, ALERT does not assert until temperature exceeds 100°C, or is below 80°C. Then, ALERT only deasserts if temperature is less than THIGH - THYST or greater than TLOW + THYST. Overtemperature Alert OT operates only in comparator mode. The OT pin is asserted when the temperature exceeds TMAX, and deasserted when the temperature drops below TMAX - THYST. A read operation does not reset OT. OT is an open-drain active-low (default) output, but can be programmed to active-high. TEMPERATURE OT SERIAL INTERFACE VCC SIO SCLK CONFIGURATION CS ALERT TLOW THIGH TMAX THYST 12 -BIT + SIGN ADC Figure 1. MAX6662 Simplified Functional Diagram THIGH - THYST THIGH TLOW TLOW + THYST ALERT TEMPERATURE LAST INTERRUPT MISSED, BUT THRESHOLD STILL CHANGES TO THIGH. ** * * TEMPERATURE READ Figure 2. Example of ALERT Operation in Interrupt Mode |
类似零件编号 - MAX6662 |
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类似说明 - MAX6662 |
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