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DSPIC30F 데이터시트(PDF) 85 Page - Microchip Technology

부품명 DSPIC30F
상세설명  General Purpose and Sensor Families High-Performance Digital Signal Controllers
PDF  248 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

DSPIC30F 데이터시트(HTML) 85 Page - Microchip Technology

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 2004 Microchip Technology Inc.
Preliminary
DS70083G-page 83
dsPIC30F
9.5.1
RTC OSCILLATOR OPERATION
When the TON = 1, TCS = 1 and TGATE = 0, the timer
increments on the rising edge of the 32 kHz LP oscilla-
tor output signal, up to the value specified in the Period
register and is then reset to ‘0’.
The TSYNC bit must be asserted to a logic ‘0’
(Asynchronous mode) for correct operation.
Enabling LPOSCEN (OSCCON<1>) will disable the
normal Timer and Counter modes and enable a timer
carry-out wake-up event.
When the CPU enters Sleep mode, the RTC will con-
tinue to operate provided the 32 kHz external crystal
oscillator is active and the control bits have not been
changed. The TSIDL bit should be cleared to ‘0’ in
order for RTC to continue operation in Idle mode.
9.5.2
RTC INTERRUPTS
When an interrupt event occurs, the respective interrupt
flag, T1IF, is asserted and an interrupt will be generated
if enabled. The T1IF bit must be cleared in software. The
respective Timer interrupt flag, T1IF, is located in the
IFS0 Status register in the interrupt controller.
Enabling an interrupt is accomplished via the respec-
tive timer interrupt enable bit, T1IE. The timer interrupt
enable bit is located in the IEC0 Control register in the
interrupt controller.



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