Datasheet

PIC24F16KA102 FAMILY
DS39927C-page 158  2008-2011 Microchip Technology Inc.
bit 7-0 CAL<7:0>: RTC Drift Calibration bits
01111111 = Maximum positive adjustment; adds 508 RTC clock pulses every one minute
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01111111 = 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
REGISTER 19-1: 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.
REGISTER 19-2: PADCFG1: PAD CONFIGURATION CONTROL REGISTER
U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0
— — — — — — — —
bit 15 bit 8
U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0
— — — SMBUSDEL OC1TRIS RTSECSEL1
(1)
RTSECSEL0
(1)
—
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 15-5 Unimplemented: Read as ‘0’
bit 4-3 Described in Section 15.0 “Output Compare” and Section 17.0 “Inter-Integrated Circuit (I
2
C™)”.
bit 2-1 RTSECSEL<1:0>: RTCC Seconds Clock Output Select bits
( 1 )
11 = Reserved; do not use
10 = RTCC source clock is selected for the RTCC pin (can be LPRC or SOSC, depending on the
RTCOSC (FDS<5>) bit setting)
01 = RTCC seconds clock is selected for the RTCC pin
00 = RTCC alarm pulse is selected for the RTCC pin
bit 0 Unimplemented: Read as ‘0’
Note 1: To enable the actual RTCC output, the RTCOE (RCFGCAL<10>) bit needs to be set.