mc68hc908rf2 Freescale Semiconductor, Inc, mc68hc908rf2 Datasheet - Page 140

• Manufacturer Part Number: mc68hc908rf2
• Description: M68hc08 Microcontrollers Microcontroller / Transmitter
• Manufacturer: Freescale Semiconductor, Inc

Timer Interface Module (TIM)
Data Sheet
140
NOTE:
NOTE:
TOIE — TIM Overflow Interrupt Enable Bit
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 enables TIM overflow interrupts when the TOF bit becomes
set. Reset clears the TOIE bit.
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 0. Reset clears the TRST bit.
These read/write bits select either the TCLK pin or one of the seven prescaler
outputs as the input to the TIM counter as
PS2–PS0 bits.
1 = TIM overflow interrupts enabled
0 = TIM overflow interrupts disabled
1 = TIM counter stopped
0 = TIM counter active
1 = Prescaler and TIM counter cleared
0 = No effect
Freescale Semiconductor, Inc.
For More Information On This Product,
PS2–PS0
Go to: www.freescale.com
Timer Interface Module (TIM)
000
001
010
011
100
101
110
111
Table 11-2. 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
TIM Clock Source
Table 11-2
TCLK
shows. Reset clears the
MC68HC908RF2 — Rev. 4.0
MOTOROLA