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Rabbit 6000 User’s Manual
digi.com
179
18.2 Dependencies
18.2.1 I/O Pins
The four Timer C outputs can be directed to bits 0-3 of parallel ports C–H.
18.2.2 Clocks
The timer in Timer C is a 16-bit up-counter clocked by the peripheral clock divided by 2, by the peripheral
clock divided by 16, the output of Timer A1, or the output of Timer A11 as selected in TCCR. TA12 may
be used as a prescaler for TA11.
18.2.3 Other Registers
18.2.4 Interrupts
A Timer C interrupt is enabled in TCCR, and will occur whenever the count limit value is reached. The
interrupt request is cleared when TCCSR is read.
Register
Function
GCSR
Select peripheral clock mode.
PCFR, PCALR
PDFR, PDALR
PEFR, PEALR
PFFR, PFALR
PGFR, PGALR
PHFR, PHALR
Alternate port output selection
TAECR
Enables selection of TA12 as prescaler for TA8-
TA11.
TAPR
The output of TAPR drives Timers A1 and A12.
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