HT66F13 datasheet(59/173 Pages) HOLTEK

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Timer Modules

- TM

One of the most fundamental functions in any microcontroller device is the ability to control and

measure time. To implement time related functions each device includes several Timer Modules,

abbreviated to the name TM. The TMs are multi-purpose timing units and serve to provide operations

such as Timer/Counter, Input Capture, Compare Match Output and Single Pulse Output as well as

being the functional unit for the generation of PWM signals. Each of the TMs has either two or three

individual interrupts. The addition of input and output pins for each TM ensures that users are provided

with timing units with a wide and flexible range of features.

The common features of the different TM types are described here with more detailed information

provided in the individual Compact, Standard and Enhanced TM sections.

Introduction

The devices contain up to two TMs with each TM having a reference name of TM0 and TM1. Each

individual TM can be categorised as a certain type, namely Compact Type TM (CTM), Standard Type

TM (STM) or Enhanced Type TM (ETM). Although similar in nature, the different TM types vary in

their feature complexity. The common features to all of the Compact, Standard and Enhanced TMs

will be described in this section and the detailed operation regarding each of the TM types will be

described in separate sections. The main features and differences between the three types of TMs are

summarised in the accompanying table.

Function

CTM

STM

ETM

Timer/Counter

ÖÖÖ

I/P Capture

¾Ö

Compare Match Output

ÖÖÖ

PWM Channels

Single Pulse Output

PWM Alignment

Edge

Edge & Centre

PWM Adjustment Period & Duty

Duty or Period

TM Function Summary

Each device in the series contains a specific number of either Compact Type, Standard Type and En-

hanced Type TM units which are shown in the table together with their individual reference name,

TM0~TM1.

Device

TM0

TM1

HT66F13

10-bit STM

HT66F14

10-bit CTM

10-bit STM

HT66F15

10-bit CTM

10-bit ETM

TM Name/Type Reference

Rev. 1.10

February 9, 2011

HT66F13/HT66F14/HT66F15

Enhanced A/D Flash Type MCU

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