M68HC08 datasheet(129/288 Pages) FREESCALE

129 / 288 page

Timer Interface Module (TIM)

MC68HC908BD48 — Rev. 2.1

Data Sheet

Freescale Semiconductor

Timer Interface Module (TIM)

129

10.5.1 TIM Counter Prescaler

The TIM clock source can be one of the seven prescaler outputs. The

prescaler generates seven clock rates from the internal bus clock. The

prescaler select bits, PS[2:0], in the TIM status and control register

(TSC) select the TIM clock source.

10.5.2 Input Capture

With the input capture function, the TIM can capture the time at which an

external event occurs. When an active edge occurs on the pin of an input

capture channel, the TIM latches the contents of the TIM counter into the

TIM channel registers, TCHxH:TCHxL. The polarity of the active edge is

programmable. Input captures can generate TIM CPU interrupt

requests.

10.5.3 Output Compare

With the output compare function, the TIM can generate a periodic pulse

with a programmable polarity, duration, and frequency. When the

counter reaches the value in the registers of an output compare channel,

the TIM can set, clear, or toggle the channel pin. Output compares can

generate TIM CPU interrupt requests.

$0014

TIM Channel 1

(TCH1H)

Read:

Bit15

Bit14

Bit13

Bit12

Bit11

Bit10

Bit9

Bit8

Write:

Reset:

Indeterminate after reset

$0015

TIM Channel 1

(TCH1L)

Read:

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Write:

Reset:

Indeterminate after reset

= Unimplemented

M68HC08 Datasheet(PDF) 129 Page - Freescale Semiconductor, Inc

M68HC08 Datasheet(HTML) 129 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL