MC68HC708AS48 FREESCALE [Freescale Semiconductor, Inc], MC68HC708AS48 Datasheet - Page 230

• Manufacturer Part Number: MC68HC708AS48
• Description: Advance Information
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Timer Interface (TIM)
Advance Information
230
NOTE:
TRST — TIM Reset Bit
Setting the TSTOP and TRST bits simultaneously stops the TIM counter
at a value of $0000.
PS[2:0] — Prescaler Select Bits
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 either the PTD6/ATD14/TCLK pin or one
of the seven prescaler outputs as the input to the TIM counter as
Table 16-1
1 = Prescaler and TIM counter cleared
0 = No effect
PS[2:0]
000
001
010
011
100
101
110
111
shows. Reset clears the PS[2:0] bits.
Timer Interface (TIM)
Table 16-1. Prescaler Selection
Internal Bus Clock
Internal Bus Clock
Internal Bus Clock
Internal Bus Clock
Internal Bus Clock
Internal Bus Clock
Internal Bus Clock 1
PTD6/ATD14/TCLK
TIM Clock Source
MC68HC708AS48
16
32
64
2
8
4
MOTOROLA
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Rev. 4.0