HD64F2149YV datasheet(321/1075 Pages) RENESAS

部件名	HD64F2149YV

功能描述	Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series

PDF	1075 Pages

Scroll/Zoom	100%

制造商	RENESAS [Renesas Technology Corp]

网页	http://www.renesas.com

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321 / 1075 page

Section 10 14-Bit PWM Timer

Rev. 3.00 Jan 18, 2006 page 293 of 1044

REJ09B0280-0300

Section 10 14-Bit PWM Timer

10.1

Overview

The H8S/2169 or H8S/2149 has an on-chip 14-bit pulse-width modulator (PWM) with two output

channels.

Each channel can be connected to an external low-pass filter to operate as a 14-bit D/A converter.

Both channels share the same counter (DACNT) and control register (DACR).

10.1.1

Features

The features of the 14-bit PWM (D/A) are listed below.

• The pulse is subdivided into multiple base cycles to reduce ripple.

• Two resolution settings and two base cycle settings are available

The resolution can be set equal to one or two system clock cycles. The base cycle can be set

equal to T

× 64 or T × 256, where T is the resolution.

• Four operating rates

The two resolution settings and two base cycle settings combine to give a selection of four

operating rates.

HD64F2149YV 数据表(PDF) 321 Page - Renesas Technology Corp