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STPM32 数据表(PDF) 62 Page - STMicroelectronics |
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STPM32 数据表(HTML) 62 Page - STMicroelectronics |
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62 / 121 page  Theory of operation STPM32, STPM33, STPM34 62/121 DS10272 Rev 8 Figure 46. AH accumulation thresholds 8.4.13 Status bits, event bits and interrupt masks The device detects and monitors events like sag and swell, tamper, energy register overflow, power sign and errors, generating an interrupt signal on INTx pins when the masked event is triggered. When the event is triggered, the correspondent bit is set in two registers: Live event register DSP_EV1,2 Status (also called interrupt) register DSP_SR1,2 To output the interrupt on INTx pins, the correspondent bit should be set in the interrupt control mask register DSP_IRQ1,2 Live event register In live event registers (DSP_EV1 and DSP_EV2), events are set and cleared by DSP at the sampling rate DCLK = 7,8125 kHz. Table 20. AH accumulator LSB Parameter Value AH accumulator register LSB AH threshold register LSB LSBAH_ACC LSBIRMS 2 3600 DClk -------------------------------- Ah = LSBAH_UP LSBAH_DOWN LSBIRMS = 2 5 A = |
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