Datasheet

PIC24FJ128GA010 FAMILY
DS39747F-page 166  2005-2012 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
...
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
...
10000000 = Maximum negative adjustment; subtracts 512 RTC clock pulses every one minute
REGISTER 19-1: RCFGCAL: RTCC CALIBRATION AND CONFIGURATION REGISTER
(1)
Note 1: The RCFGCAL Reset value is dependent on the type of Reset.
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 U-0 U-0 U-0 R/W-0 R/W-0
— — — — — — RTSECSEL
(1)
PMPTTL
(2)
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 15-2 Unimplemented: Read as ‘0’
bit 1 RTSECSEL: RTCC Seconds Clock Output Select bit
(1)
1 = RTCC seconds clock is selected for the RTCC pin
0 = RTCC alarm pulse is selected for the RTCC pin
bit 0 PMPTTL: PMP Module TTL Input Buffer Select bit
(2)
1 = PMP module uses TTL input buffers
0 = PMP module uses Schmitt input buffers
Note 1: To enable the actual RTCC output, the RTCOE (RCFGCAL<10>) bit needs to be set.
2: Refer to Table 1-2 for affected PMP inputs.