h8s-2111b Renesas Electronics Corporation., h8s-2111b Datasheet - Page 191

• Manufacturer Part Number: h8s-2111b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

This LSI has an on-chip 16-bit free-running timer (FRT). The FRT operates on the basis of the 16-
bit free-running counter (FRC), and outputs two independent waveforms, and measures the input
pulse width and external clock periods.
9.1
• Selection of four clock sources
• Two independent comparators
• Four independent input capture channels
• Counter clearing
• Seven independent interrupts
• Special functions provided by automatic addition function
TIM8FR1A_010020020700
One of the three internal clocks (φ/2, φ/8, or φ/32), or an external clock input can be selected
(enabling use as an external event counter).
Two independent waveforms can be output.
The rising or falling edge can be selected.
Buffer modes can be specified.
The free-running counters can be cleared on compare-match A.
Two compare-match interrupts, four input capture interrupts, and one overflow interrupt can be
requested independently.
The contents of OCRAR and OCRAF can be added to the contents of OCRA automatically,
enabling a periodic waveform to be generated without software intervention. The contents of
ICRD can be added automatically to the contents of OCRDM × 2, enabling input capture
operations in this interval to be restricted.
Features
Section 9 16-Bit Free-Running Timer (FRT)
Rev. 1.00, 05/04, page 157 of 544