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AK9752AE Datenblatt(PDF) 11 Page - Asahi Kasei Microsystems |
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AK9752AE Datenblatt(HTML) 11 Page - Asahi Kasei Microsystems |
11 / 36 page [AK9752] 016016473-E-00 2017/1 - 11 - 10.4. Descriptions for each Operating Mode 10.4.1. Stand-by Mode (MODE [1:0] = “00”) AK9752 goes to Stand-by Mode by resetting(POR or Software RST) or setting the operating mode setting register. All circuits are powered down except for POR circuit. All registers can be accessed in this mode. Parameters and measurement data in registers are retained, and INTN is set to the initial state in this mode. 10.4.2. Continuous Mode (MODE [1:0] = “01”) When Continuous Mode (MODE [1:0] = “01”) is selected, the measurement is automatically repeated at the period of 100ms(typ.). The read-out registers will be updated every after completion of a measurement. This mode is terminated by setting Stand-by Mode (MODE [1:0] = “00”). When MODE [1:0] is changed during a measurement, the measurement is interrupted. Then the last data is retained in the registers. It is possible to write the threshold setting register and the interrupt setting register during this mode. MODE[1:0] 00 Analog circuit Power down Change the register 01 Power on 00 1.67ms (typ.) Ready Measurement 100 ms (typ.) Wait Power down Digital calculation Wait When changing the mode, measurement is interrupted. Last data is retained in the registers. Measurement Measurement Measurement Measurement Change the register Figure 10.2. Continuous Mode 10.4.3. Single Shot Mode (MODE [1:0] = “10”) When AK9752 is set to Single shot Mode (MODE[1:0] = “10”), measurement is done one time, and the measurement data is stored to the read-out registers. AK9752 becomes automatically powered down except for POR circuit after completion of the measurement. MODE[1:0] changes to “00”. The digital filter of ADC is invalid in this mode. MODE[1:0] 00 Analog Circuit Power down Change the register 10 00 Power down Power on 10 00 Power on 1.67ms (typ.) Ready Measurement 100 ms (typ.) Ready Wait Wait Power down Digital calculation Wait Change the register 1.67ms (typ.) 100 ms (typ.) Measurement Figure 10.3. Single shot Mode |
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