mc68hc11k4 Freescale Semiconductor, Inc, mc68hc11k4 Datasheet - Page 204

• Manufacturer Part Number: mc68hc11k4
• Description: Mc68hc11k1 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Timing System
Technical Data
204
PAI/OC1
MAIN TIMER
PA7/
FROM
FROM
DDA7
OC1
FROM MAIN TIMER
E
64 CLOCK
OUTPUT
BUFFER
Registers involved in pulse accumulator operation include:
EDGE DETECTION
INPUT BUFFER
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Freescale Semiconductor, Inc.
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AND
Data direction register A (DDRA)
Pulse accumulator control register (PACTL)
Timer interrupt mask 2 register (TMSK2)
Timer interrupt flag 2 (TFLG2)
Pulse accumulator count register (PACNT)
Figure 9-21. Pulse Accumulator
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INTERRUPT ENABLES
Timing System
TMSK2
CONTROL
PACTL
MUX
2:1
PAEN
CLOCK
PAEN
PAI EDGE
DATA BUS
INTERNAL
STATUS FLAGS
8-BIT COUNTER
OVERFLOW
ENABLE
PACNT
TFLG2
M68HC11K Family
INTERRUPT
REQUESTS
MOTOROLA
1
2