mc68hc908mr32 Freescale Semiconductor, Inc, mc68hc908mr32 Datasheet - Page 235
mc68hc908mr32
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mc68hc908mr32
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908MR32.pdf
(282 pages)
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Chapter 17
Timer Interface B (TIMB)
17.1 Introduction
This section describes the timer interface module B (TIMB). The TIMB is a 2-channel timer that provides:
Figure 17-2
17.2 Features
Features of the TIMB include:
17.3 Functional Description
Figure 17-2
can operate as a free-running counter or a modulo up-counter. The TIMB counter provides the timing
reference for the input capture and output compare functions. The TIMB counter modulo registers,
TBMODH–TBMODL, control the modulo value of the TIMB counter. Software can read the TIMB counter
value at any time without affecting the counting sequence.
The two TIMB channels are programmable independently as input capture or output compare channels.
Freescale Semiconductor
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Timing reference with input capture
Output compare
Pulse-width modulation functions
Two input capture/output compare channels:
–
–
Buffered and unbuffered pulse-width modulation (PWM) signal generation
Programmable TIMB clock input:
–
–
Free-running or modulo up-count operation
Toggle any channel pin on overflow
TIMB 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 TIMB clock input (4-MHz maximum frequency)
shows the TIMB structure. The central component of the TIMB is the 16-bit TIMB counter that
is a block diagram of the TIMB.
The TIMB module is not available in the 56-pin shrink dual in-line package
(SDIP).
The TIMB module is not available in the 56-pin SDIP.
MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1
NOTE
NOTE
235
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