Motorola MC68HC908MR16 用户手册
Advance Information
MC68HC908MR16/MC68HC908MR32 — Rev. 4.0
200
Timer Interface A (TIMA)
MOTOROLA
Timer Interface A (TIMA)
11.2 Introduction
This section describes the timer interface module A (TIMA). The TIMA is
a 4-channel timer that provides:
a 4-channel timer that provides:
•
Timing reference with input capture
•
Output compare
•
Pulse-width modulator functions
is a block diagram of the TIMA.
11.3 Features
Features of the TIMA include:
•
Four input capture/output compare channels:
–
Rising-edge, falling-edge, or any-edge input capture trigger
–
Set, clear, or toggle output compare action
•
Buffered and unbuffered pulse-width modulator (PWM) signal
generation
generation
•
Programmable TIMA clock input:
–
7-frequency internal bus clock prescaler selection
–
External TIMA clock input (4-MHz maximum frequency)
•
Free-running or modulo up-count operation
•
Toggle any channel pin on overflow
•
TIMA counter stop and reset bits