MC68HC08XL36 Datasheet, PDF (180/362 Pages) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
TIM
NOTE: Setting the TSTOP and TRST bits simultaneously stops the TIM counter
at a value of $0000.
PS2–PS0 — Prescaler Select Bits
These read/write bits select either the TCLK pin or one of the seven
prescaler outputs as the input to the TIM counter as Table 3 shows.
Reset clears the PS2–PS0 bits.
PS[2:0]
000
001
010
011
100
101
110
111
Table 3. Prescaler Selection
TIM Clock Source
Internal Bus Clock
Internal Bus Clock ÷ 2
Internal Bus Clock ÷ 4
Internal Bus Clock ÷ 8
Internal Bus Clock ÷ 16
Internal Bus Clock ÷ 32
Internal Bus Clock ÷ 64
TCLK
TIM DMA Select
Register
The TIM DMA select register enables either TIM CPU interrupt requests
or TIM DMA service requests.
Address: $0021
Bit 7
6
5
4
3
2
1
Read: 0
0
0
0
DMA3S DMA2S DMA1S
Write:
Reset: 0
0
0
0
0
0
0
= Unimplemented
Figure 5. TIM DMA Select Register (TDMA)
Bit 0
DMA0S
0
MC68HC08XL36
180
Timer Interface Module (TIM)
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18-tim4_b
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