Section 11 14-Bit Pwm; Overview; Features - Renesas H8/3847R Series Hardware Manual

8-bit single-chip microcomputer super low power

Table of Contents

This LSI is provided with a 14-bit PWM (pulse width modulator) on-chip, which can be used as a

D/A converter by connecting a low-pass filter.

Features of the 14-bit PWM are as follows.

• Choice of two conversion periods

Any of the following four conversion periods can be chosen:

131,072/φ, with a minimum modulation width of 8/φ (PWCR1 = 1, PWCR0 = 1)

65,536/φ, with a minimum modulation width of 4/φ (PWCR1 = 1, PWCR0 = 0)

32,768/φ, with a minimum modulation width of 2/φ (PWCR1 = 0, PWCR0 = 1)

16,384/φ, with a minimum modulation width of 1/φ (PWCR1 = 0, PWCR0 = 0)

• Pulse division method for less ripple

• Use of module standby mode enables this module to be placed in standby mode independently

when not used.

Section 11 14-Bit PWM

Rev. 6.00 Aug 04, 2006 page 409 of 680

REJ09B0145-0600