mc68hc908as60 Freescale Semiconductor, Inc, mc68hc908as60 Datasheet - Page 297

• Manufacturer Part Number: mc68hc908as60
• Description: Mc68hc908as60 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

MC68HC908AS60 — Rev. 1.0
NOTE:
NOTE:
TSTOP — TIM Stop Bit
Do not set the TSTOP bit before entering wait mode if the TIM is required
to exit wait mode.
TRST — TIM Reset Bit
Setting the TSTOP and TRST bits simultaneously stops the TIM counter
at a value of $0000.
PS2–PS0 — Prescaler Select Bits
This read/write bit stops the TIM counter. Counting resumes when
TSTOP is cleared. Reset sets the TSTOP bit, stopping the TIM
counter until software clears the TSTOP bit.
Setting this write-only bit resets the TIM counter and the TIM
prescaler. Setting TRST has no effect on any other registers.
Counting resumes from $0000. TRST is cleared automatically after
the TIM counter is reset and always reads as logic 0. Reset clears the
TRST bit.
These read/write bits select one of the seven prescaler outputs as the
input to the TIM counter as
PS2–PS0 bits.
Freescale Semiconductor, Inc.
For More Information On This Product,
1 = TIM counter stopped
0 = TIM counter active
1 = Prescaler and TIM counter cleared
0 = No effect
PS2–PS0
Go to: www.freescale.com
000
001
010
100
101
011
110
111
Modulo Timer (TIM)
Table 19-1. Prescaler Selection
Table 19-1
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
TIM Clock Source
shows. Reset clears the
16
32
64
64
2
8
4
Modulo Timer (TIM)
Technical Data
I/O Registers