mc68hc908lj24 Freescale Semiconductor, Inc, mc68hc908lj24 Datasheet - Page 238
mc68hc908lj24
Manufacturer Part Number
mc68hc908lj24
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908LJ24.pdf
(464 pages)
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Real Time Clock (RTC)
Data Sheet
238
DAYF — Day Flag
HRF — Hour Flag
MINF — Minute Flag
SECF — Second Flag
This clearable, read-only bit is set on every increment of the day
counter. When the DAYIE bit in RTCCR1 is set, DAYF generates a
CPU interrupt request. In normal operation, clear the DAYF bit by
reading RTCSR with DAYF set and then reading the day register
(DAYR). Reset clears DAYF.
This clearable, read-only bit is set on every increment of the hour
counter. When the HRIE bit in RTCCR1 is set, HRF generates a CPU
interrupt request. In normal operation, clear the HRF bit by reading
RTCSR with HRF set and then reading the hour register (HRR). Reset
clears HRF.
This clearable, read-only bit is set on every increment of the minute
counter. When the MINIE bit in RTCCR1 is set, MINF generates a
CPU interrupt request. In normal operation, clear the MINF bit by
reading RTCSR with MINF set and then reading the minute register
(MINR). Reset clears MINF.
This clearable, read-only bit is set on every increment of the second
counter. When the SECIE bit in RTCCR1 is set, SECF generates a
CPU interrupt request. In normal operation, clear the SECF bit by
reading RTCSR with SECF set and then reading the second register
(SECR). Reset clears SECF.
1 = Day counter incremented
0 = No day counter incremented
1 = Hour counter incremented
0 = No hour counter incremented
1 = Minute counter incremented
0 = No minute counter incremented
1 = Second counter incremented
0 = No second counter incremented
Real Time Clock (RTC)
MC68HC908LJ24/LK24 — Rev. 2.1
Freescale Semiconductor
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