MC68HC11P2 Datasheet, PDF (159/268 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Timing System
Pulse accumulator
E/64 clock
(from main timer)
&
PA7/
OC1/
PAI
Input buffer
and edge detector
Output buffer
TOF
RTIF
PAOVF
PAIF
0
0
0
0
TOI
RTII
PAOVI
PAII
0
0
PR1
PR0
Overflow
2:1 Clock
MUX
PACNT
Enable
&1
Interrupt
requests
&2
From
OC1
From
DDRA7
PACTL
Internal data bus
Figure 8-3. Pulse accumulator block diagram
Pulse accumulator control bits are also located within two timer
registers, TMSK2 and TFLG2, as described in the following paragraphs.
MC68HC11P2 — Rev 1.0
Timing System
For More Information On This Product,
Go to: www.freescale.com
Technical Data