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STPM01 데이터시트(PDF) 7 Page - STMicroelectronics |
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STPM01 데이터시트(HTML) 7 Page - STMicroelectronics |
7 / 56 page STPM01 Functions 7/56 4 Functions Table 4. Programmable pin functions Programmable pin Stand-alone mode (APL register=2 or 3) Peripheral mode (APL register=0 or 1) MON Output for Stepper’s node (MB) If APL=0 then Watchdog signal. If APL=1 then ∆Σ signal of current channel MOP Output for Stepper’s node (MA) If APL=0 then ZCR If APL=1 then ∆Σ signal of voltage channel LED If APL=2 then LED provides high frequency pulses proportional to Active Energy with 50% duty cycle. If APL=3 then LED provides pulses proportional to Active Energy (internal signal AW). The number of pulses per kWh can be selected according to the value of KMOT configuration bit. If APL=0 then LED can provide Active, Reactive or Apparent Energy according to value of KMOT configuration bit. If APL=1 then LED is connected to the MUX signal generated from the tamper detection circuit. When LED=low then the primary current channel is selected, if LED=high the secondary current channel is selected. SCLNLC No-load indicator: when low, a no-load condition is detected Used for SPI interface (see SPI interface section for details) SDATD Tamper indicator: when low tamper condition is detected SYN Negative active power indicator: when low a negative active power condition is detected SCS Must be high to activate SCLNLC, SDATAD and SYN indications |
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