MC68HC908AZ32ACFU MOTOROLA [Motorola, Inc], MC68HC908AZ32ACFU Datasheet - Page 326

• Manufacturer Part Number: MC68HC908AZ32ACFU
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Timer Interface Module B (TIMB)
Advance Information
326
NOTE:
NOTE:
Do not set the TSTOP bit before entering wait mode if the TIMB is
required to exit wait mode. Also, when the TSTOP bit is set and the timer
is configured for input capture operation, input captures are inhibited
until TSTOP is cleared.
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
Freescale Semiconductor, Inc.
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 PTD4/ATD12 pin or one of the
seven prescaler outputs as the input to the TIMB counter as
1
shows. Reset clears the PS[2:0] bits.
For More Information On This Product,
1 = Prescaler and TIMB counter cleared
0 = No effect
Timer Interface Module B (TIMB)
PS[2:0]
Go to: www.freescale.com
000
001
010
011
100
101
110
111
Table 19-1. Prescaler Selection
Internal Bus Clock
Internal Bus Clock
Internal Bus Clock
Internal Bus Clock
Internal Bus Clock
Internal Bus Clock
Internal Bus Clock 1
TIMB Clock Source
PTD4/ATD12
68HC908AZ32A — Rev 0.0
16
32
64
2
8
4
MOTOROLA
Table 19-