s908qc16g0cdte Freescale Semiconductor, Inc, s908qc16g0cdte Datasheet - Page 119

• Manufacturer Part Number: s908qc16g0cdte
• Description: M68hc08 Family Of 8-bit Microcontroller Units Mcus
• Manufacturer: Freescale Semiconductor, Inc

Chapter 14
Timer Interface Module (TIM)
14.1 Introduction
This section describes the timer interface module (TIM). The TIM module is a 2-channel timer that
provides a timing reference with input capture, output compare, and pulse-width-modulation functions.
The TIM module shares its pins with general-purpose input/output (I/O) port pins. See
location of these shared pins.
14.2 Features
Features include the following:
14.3 Functional Description
Figure 14-2
can operate as a free-running counter or a modulo up-counter. The counter provides the timing reference
for the input capture and output compare functions. The counter modulo registers, TMODH:TMODL,
control the modulo value of the counter. Software can read the counter value, TCNTH:TCNTL, at any time
without affecting the counting sequence.
The two TIM channels are programmable independently as input capture or output compare channels.
14.3.1 TIM Counter Prescaler
The TIM clock source is one of the seven prescaler outputs or the external clock input pin, TCLK if
available. 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 clock source.
Freescale Semiconductor
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Two input capture/output compare channels
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Buffered and unbuffered output compare pulse-width modulation (PWM) signal generation
Programmable clock input
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Free-running or modulo up-count operation
Toggle any channel pin on overflow
Counter stop and reset bits
Rising-edge, falling-edge, or any-edge input capture trigger
Set, clear, or toggle output compare action
7-frequency internal bus clock prescaler selection
External clock input pin if available, See
shows the structure of the TIM. The central component of the TIM is the 16-bit counter that
MC68HC08QY/QT Family Data Sheet, Rev. 2
Figure 14-1
Figure 14-1
for port
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