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ADE7569 数据表(PDF) 118 Page - Analog Devices |
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ADE7569 数据表(HTML) 118 Page - Analog Devices |
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118 / 144 page  ADE7566/ADE7569/ADE7166/ADE7169 Rev. A | Page 118 of 144 Table 125. Alarm Interval SFR (INTVAL, 0xA6) Bit Mnemonic Default Description 7 to 0 INTVAL 0 The interval timer counts according to the time base established in the ITS[1:0] bits of the RTC Configuration SFR (TIMECON, 0xA1). Once the number of counts is equal to INTVAL, the ALARM flag is set and a pending RTC interrupt is created. Note that the interval counter is eight bits. Therefore, it can count up to 255 seconds, for example. Table 126. RTC Nominal Compensation SFR (RTCCOMP, 0xF6) Bit Mnemonic Default Description 7 to 0 RTCCOMP 0 The RTCCOMP SFR holds the nominal RTC compensation value at 25°C. This register is retained during a watchdog reset or an external reset. It is reset after a POR. Table 127. RTC Temperature Compensation SFR (TEMPCAL, 0xF7) Bit Mnemonic Default Description 7 to 0 TEMPCAL 0 The TEMPCAL SFR is adjusted based on the temperature read in the TEMPADC to calibrate the RTC over temperature. This allows the external crystal shift to be compensated over temperature. This register is retained during a watchdog reset or an external reset. It is reset after a POR. Table 128. Interrupt Pins Configuration SFR (INTPR, 0xFF) Bit Mnemonic Default Description 7 RTCCAL 0 Controls the RTC calibration output. When set, the RTC calibration frequency selected by FSEL[1:0] is output on the P0.2/CF1/RTCCAL pin. Sets RTC calibration output frequency and calibration window. FSEL[1:0] Result (Calibration Window, Frequency) 0 0 30.5 sec, 1 Hz 0 1 30.5 sec, 512 Hz 1 0 0.244 sec, 500 Hz 6 to 5 FSEL[1:0] 1 1 0.244 sec, 16.384 kHz 4 Reserved Controls the function of INT1. INT1PRG[2:0] Result x 0 0 GPIO x 0 1 BCTRL 0 1 x INT1 input disabled 3 to 1 INT1PRG[2:0] 000 1 1 x INT1 input enabled Controls the function of INT0. INT0PRG Result 0 INT0 input disabled 0 INT0PRG 0 1 INT0 input enabled Table 129. Key SFR (KYREG, 0xC1) Bit Mnemonic Default Description 7 to 0 KYREG 0 Write 0xA7 to the this SFR before writing to the POWCON SFR, which unlocks KYREG. Write 0xEA to the this SFR before writing to the INTPR, HTHSEC, SEC, MIN, or HOUR timekeeping registers to unlock KYREG. |
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