HD64F3437TF16 Datasheet, PDF (240/752 Pages) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

Section 10 PWM Timers
10.1 Overview
The H8/3437 Series has an on-chip pulse-width modulation (PWM) timer module with two
independent channels (PWM0 and PWM1). Both channels are functionally identical. Each PWM
channel generates a rectangular output pulse with a duty cycle of 0 to 100%. The duty cycle is
specified in an 8-bit duty register (DTR).
10.1.1 Features
The PWM timer module has the following features:
• Selection of eight clock sources
• Duty cycles from 0 to 100% with 1/250 resolution
• Output with positive or negative logic and software enable/disable control
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