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ADE5166 数据表(PDF) 115 Page - Analog Devices |
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ADE5166 数据表(HTML) 115 Page - Analog Devices |
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115 / 148 page  ADE5166/ADE5169 Rev. 0 | Page 115 of 148 Table 129. RTC Pointer Address SFR (RTCPTR, Address 0xA3) Bit Mnemonic Default Description 7 RTCW_RB 0 Read/write selection. RTCW_RB Results 0 The RTC register at RTC_ADDRESS (Bits[4:0]) is read into the RTCDAT SFR (Address 0xA4). 1 The data in the RTCDAT SFR is written in the RTC register at RTC_ADDRESS (Bits[4:0]). This operation is completed only if the KYREG SFR (Address 0xC1) is set to 0xEA, the instruction before writing to the RTCDAT SFR. [6:5] Reserved N/A Reserved. [4:0] RTC_ADDRESS 0 Target address for read/write operation. Table 130. RTC Pointer Data SFR (RTCDAT, Address 0xA4) Bit Mnemonic Default Description [7:0] RTC_DATA 0 Location of data for read/write RTC operation. Table 131. RTC Nominal Compensation SFR (RTCCOMP, Address 0xF6) Bit Mnemonic Default Description [7:0] RTCCOMP 0 The RTCCOMP SFR holds the nominal RTC compensation value at 25°C. Note that this register is reset after a watchdog reset, an external reset, or a power-on reset (POR). Table 132. RTC Temperature Compensation SFR (TEMPCAL, Address 0xF7) Bit Mnemonic Default Description [7:0] TEMPCAL 0 The TEMPCAL SFR is used to calibrate the RTC over temperature. This allows the external crystal shift to be compensated over temperature. Note that this register is reset after a watchdog reset, an external reset, or a power-on reset (POR). Table 133. Key SFR (KYREG, Address 0xC1) Bit Mnemonic Default Description [7:0] KYREG 0 To unlock the POWCON SFR (Address 0xC5) and enable a write operation, 0xA7 should be written to the KYREG SFR (Address 0xC1). To unlock the HTHSEC, SEC, MIN or HOUR time- keeping registers or the RTCCAL register and enable a write operation, 0xEA should be written to KYREG. |
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