Microchip Technology MA330018 データシート
© 2007-2012 Microchip Technology Inc.
DS70291G-page 313
dsPIC33FJ32MC302/304, dsPIC33FJ64MCX02/X04 AND dsPIC33FJ128MCX02/X04
bit 7-0
CAL<7:0>: RTC Drift Calibration bits
11111111 = Minimum negative adjustment; subtracts 4 RTC clock pulses every one minute
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10000000 = Maximum negative adjustment; subtracts 512 RTC clock pulses every one minute
01111111 = Maximum positive adjustment; adds 508 RTC clock pulses every one minute
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00000001 = Minimum positive adjustment; adds 4 RTC clock pulses every one minute
00000000 = No adjustment
11111111 = Minimum negative adjustment; subtracts 4 RTC clock pulses every one minute
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•
•
10000000 = Maximum negative adjustment; subtracts 512 RTC clock pulses every one minute
01111111 = Maximum positive adjustment; adds 508 RTC clock pulses every one minute
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•
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00000001 = Minimum positive adjustment; adds 4 RTC clock pulses every one minute
00000000 = No adjustment
REGISTER 25-1:
RCFGCAL: RTCC CALIBRATION AND CONFIGURATION REGISTER
(1)
(CONTINUED)
Note 1: The RCFGCAL register is only affected by a POR.
2: A write to the RTCEN bit is only allowed when RTCWREN = 1.
3: This bit is read-only. It is cleared to ‘0’ on a write to the lower half of the MINSEC register.
3: This bit is read-only. It is cleared to ‘0’ on a write to the lower half of the MINSEC register.