16-Bit Integrated Timer Unit (Itu); Overview; Features - Hitachi H8/3032 Series Hardware Manual

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Section 8 16-Bit Integrated Timer Unit (ITU)

8.1 Overview

The H8/3032 Series has a built-in 16-bit integrated timer-pulse unit (ITU) with five 16-bit timer
channels.

8.1.1 Features

ITU features are listed below.
• Capability to process up to 12 pulse outputs or 10 pulse inputs
• Ten general registers (GRs, two per channel) with independently-assignable output compare
or input capture functions
• Selection of eight counter clock sources for each channel:
Internal clocks: ø, ø/2, ø/4, ø/8
External clocks: TCLKA, TCLKB, TCLKC, TCLKD
• Five operating modes selectable in all channels:
— Waveform output by compare match
Selection of 0 output, 1 output, or toggle output (only 0 or 1 output in channel 2)
— Input capture function
Rising edge, falling edge, or both edges (selectable)
— Counter clearing function
Counters can be cleared by compare match or input capture
— Synchronization
Two or more timer counters (TCNTs) can be preset simultaneously, or cleared
simultaneously by compare match or input capture. Counter synchronization enables
synchronous register input and output.
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