mc68hc11e0fnr2 Freescale Semiconductor, Inc, mc68hc11e0fnr2 Datasheet - Page 144

• Manufacturer Part Number: mc68hc11e0fnr2
• Description: Hc11 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Timing Systems
144
MCU PIN
FROM MAIN TIMER
PA7/
PAI/
OC1
E
÷
MAIN TIMER
64 CLOCK
FROM
OC1
DDRA7
FROM
OUTPUT
BUFFER
EDGE DETECTOR
INPUT BUFFER
AND
TMSK2 INT ENABLES
PACTL CONTROL
Figure 9-24. Pulse Accumulator
M68HC11E Family Data Sheet, Rev. 5.1
DATA
BUS
MUX
2
:
1
CLOCK
PAI EDGE
PAEN
PAEN
INTERNAL
DATA BUS
TFLG2 INTERRUPT STATUS
ENABLE
OVERFLOW
PACNT 8-BIT COUNTER
PAOVI
PAOVF
PAII
PAIF
DISABLE
FLAG SETTING
Freescale Semiconductor
INTERRUPT
REQUESTS
1
2