SH7615 Datasheet, PDF (563/925 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH
RISC engine Family/SH7600 Series

Section 12 16-Bit Free-Running Timer (FRT)
12.1 Overview
A single-channel, 16-bit free-running timer (FRT) is included on-chip. The FRT is based on a
16-bit free-running counter (FRC) and can output two types of independent waveforms. The FRT
can also measure the width of input pulses and the cycle of external clocks.
12.1.1 Features
The FRT has the following features:
• Choice of four counter input clocks
The counter input clock can be selected from three internal clocks (Pφ/8, Pφ/32, Pφ/128) and
an external clock (enabling external event counting).
• Two independent comparators
Two waveform outputs can be generated.
• Input capture
Choice of rising edge or falling edge
• Counter clear specification
The counter value can be cleared by compare match A.
• Four interrupt sources
Two compare match sources, one input capture source, and one overflow source can issue
requests independently.
Rev. 2.00, 03/05, page 525 of 884