mc68hc708mp16 Freescale Semiconductor, Inc, mc68hc708mp16 Datasheet - Page 241

• Manufacturer Part Number: mc68hc708mp16
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MC68HC708MP16
Freescale Semiconductor
NOTE:
NOTE:
—
Rev. 3.1
TSTOP — TIMB Stop Bit
Do not set the TSTOP bit before entering wait mode if the TIMB is
required to exit wait mode.
TRST — TIMB Reset Bit
Setting the TSTOP and TRST bits simultaneously stops the TIMB
counter at a value of $0000.
PS[2:0] — Prescaler Select Bits
This read/write bit stops the TIMB counter. Counting resumes when
TSTOP is cleared. Reset sets the TSTOP bit, stopping the TIMB
counter until software clears the TSTOP bit.
Setting this write-only bit resets the TIMB counter and the TIMB
prescaler. Setting TRST has no effect on any other registers.
Counting resumes from $0000. TRST is cleared automatically after
the TIMB counter is reset and always reads as logic 0. Reset clears
the TRST bit.
These read/write bits select either the PTE3/TCLKB pin or one of the
seven prescaler outputs as the input to the TIMB counter as
Table 12-1
1 = TIMB counter stopped
0 = TIMB counter active
1 = Prescaler and TIMB counter cleared
0 = No effect
Timer Interface Module B (TIMB)
PS[2:0]
shows. Reset clears the PS[2:0] bits.
000
001
010
011
100
101
110
111
Table 12-1. Prescaler Selection
Internal Bus Clock ÷ 16
Internal Bus Clock ÷ 32
Internal Bus Clock ÷ 64
Internal Bus Clock ÷ 2
Internal Bus Clock ÷ 4
Internal Bus Clock ÷ 8
Internal Bus Clock ÷1
TIMB Clock Source
PTE3/TCLKB
Timer Interface Module B (TIMB)
Technical Data
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