M68HC08 datasheet(139/332 Pages) FREESCALE

139 / 332 page

Timer Interface Module (TIM)

MC68HC908JB16 — Rev. 1.1

Technical Data

Freescale Semiconductor

Timer Interface Module (TIM)

139

10.4 Pin Name Conventions

The text that follows describes both timers, TIM1 and TIM2. The TIM

input/output (I/O) pin names are T[1,2]CH01 (timer channel 01), where

“1” is used to indicate TIM1 and “2” is used to indicate TIM2. The two

TIMs share two I/O pins with two I/O port pins. The full names of the TIM

I/O pins are listed in Table 10-1

. The generic pin names appear in the

text that follows.

NOTE:

References to either timer 1 or timer 2 may be made in the following text

by omitting the timer number. For example, TCH01 may refer generically

to T1CH01 and T2CH01.

10.5 Functional Description

Figure 10-1 shows the structure of the TIM. The central component of

the TIM is the 16-bit TIM counter that can operate as a free-running

counter or a modulo up-counter. The TIM counter provides the timing

reference for the input capture and output compare functions. The TIM

counter modulo registers, TMODH:TMODL, control the modulo value of

the TIM counter. Software can read the TIM counter value at any time

without affecting the counting sequence.

Channel 0 and channel 1 I/Os are connected together, forming a

common I/O. Although the two TIM channels are programmable

independently as input capture channels, the input capture signal will be

the same for both channels. Output compare functions should only be

enabled for one channel to avoid I/O contention.

Table 10-1. Pin Name Conventions

TIM Generic Pin Names:

T[1,2]CH01

TCLK

Full TIM

Pin Names:

TIM1

PTE1/T1CH01

PTE0/TCLK

TIM2

PTE2/T2CH01

M68HC08 Datasheet(PDF) 139 Page - Freescale Semiconductor, Inc

M68HC08 Datasheet(HTML) 139 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