MC68HC08AZ60ACFU MOTOROLA [Motorola, Inc], MC68HC08AZ60ACFU Datasheet - Page 311

• Manufacturer Part Number: MC68HC08AZ60ACFU
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

MC68HC08AZ60A — Rev 0.0
MOTOROLA
NOTE:
NOTE:
Do not set the PSTOP bit before entering wait mode if the PIT is required
to exit wait mode.
PRST — PIT Reset Bit
Setting the PSTOP and PRST bits simultaneously stops the PIT counter
at a value of $0000.
PPS[2:0] — Prescaler Select Bits
Setting this write-only bit resets the PIT counter and the PIT prescaler.
Setting PRST has no effect on any other registers. Counting resumes
from $0000. PRST is cleared automatically after the PIT counter is
reset and always reads as logic zero. Reset clears the PRST bit.
These read/write bits select one of the seven prescaler outputs as the
input to the PIT counter as
PPS[2:0] bits.
1 = Prescaler and PIT counter cleared
0 = No effect
PPS[2:0]
000
001
010
100
101
011
110
111
Programmable Interrupt Timer (PIT)
Table 19-2. Prescaler Selection
Table 19-2
Internal Bus Clock
Internal Bus Clock
Internal Bus Clock
Internal Bus Clock
Internal Bus Clock
Internal Bus Clock
Internal Bus Clock
Internal Bus Clock 1
PIT Clock Source
Programmable Interrupt Timer (PIT)
shows. Reset clears the
16
32
64
64
2
4
8
Advance Information
I/O Registers
311