S9S12XS256J0CAL Datasheet, PDF (461/738 Pages) Freescale Semiconductor, Inc – Microcontrollers

Chapter 16
Timer Module (TIM16B8CV2)
Table 16-1. Revision History
Revision
Number
Revision Date Sections Affected
Description of Changes
V02.05
V02.06
V02.07
9 Jul 2009
26 Aug 2009
04 May 2010
16.3.2.12/16-477
16.3.2.13/16-477
16.3.2.15/16-479
16.3.2.16/16-480
16.3.2.19/16-482
16.4.2/16-485
16.4.3/16-485
- Revised flag clearing procedure, whereby TEN or PAEN bit must be set
when clearing flags.
- Add fomula to describe prescaler
16.1.2/16-462
16.3.2.15/16-479
16.3.2.2/16-468
16.3.2.3/16-469
16.3.2.4/16-470
16.4.3/16-485
- Correct typo: TSCR ->TSCR1
- Correct reference: Figure 1-25 -> Figure 1-31
- Add description, “a counter overflow when TTOV[7] is set”, to be the
condition of channel 7 override event.
- Phrase the description of OC7M to make it more explicit
16.3.2.8/16-473 - Add Table 16-10
16.3.2.11/16-476 - in TCRE bit description part,add Note
16.4.3/16-485 - Add Figure 16-31
16.1 Introduction
The basic timer consists of a 16-bit, software-programmable counter driven by a enhanced programmable
prescaler.
This timer can be used for many purposes, including input waveform measurements while simultaneously
generating an output waveform. Pulse widths can vary from microseconds to many seconds.
This timer contains 8 complete input capture/output compare channels and one pulse accumulator. The
input capture function is used to detect a selected transition edge and record the time. The output compare
function is used for generating output signals or for timer software delays. The 16-bit pulse accumulator
is used to operate as a simple event counter or a gated time accumulator. The pulse accumulator shares
timer channel 7 when in event mode.
A full access for the counter registers or the input capture/output compare registers should take place in
one clock cycle. Accessing high byte and low byte separately for all of these registers may not yield the
same result as accessing them in one word.
16.1.1 Features
The TIM16B8CV2 includes these distinctive features:
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