mc68hc916y3 Freescale Semiconductor, Inc, mc68hc916y3 Datasheet - Page 298

• Manufacturer Part Number: mc68hc916y3
• Description: Mc68hc16y3 16 Bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

13-10
MOTOROLA
Multiplexer outputs (including the PCLK signal) can be connected to external pins. The
CPROUT bit in the TMSK2 register configures the OC1pin to output the TCNT clock
and the PPROUT bit in the PWMC register configures the PWMA pin to output the
PWMC clock. CPROUT and PPROUT can be written at any time. Clock signals on
OC1 and PWMA do not have a 50% duty cycle. They have the period of the selected
clock but are high for only one system clock time.
The prescaler also supplies three clock signals to the pulse accumulator clock select
mux. These are the system clock divided by 512, the external clock signal from the
PCLK pin and the capture/compare clock signal.
PCLK
PIN
SYSTEM CLOCK
Freescale Semiconductor, Inc.
DIVIDER
Figure 13-2 Prescaler Block Diagram
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SYNCHRONIZER AND
DIGITAL FILTER
GENERAL-PURPOSE TIMER
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EXT.
EXT.
256
128
128
64
32
16
64
32
16
8
4
8
4
2
CPR2 CPR1 CPR0
PPR2 PPR1 PPR0
EXT.
512
SELECT
SELECT
TO PULSE ACCUMULATOR
TO PULSE ACCUMULATOR
TO PULSE ACCUMULATOR
TO CAPTURE/
PWM UNIT
COMPARE
TIMER
TO
MC68HC16Y3/916Y3
USER’S MANUAL
GPT PRE BLOCK