HD6473837H Datasheet, PDF (194/562 Pages) Renesas Technology Corp – Hardware Manual

Section 9 Timers
9.1 Overview
The H8/3834 Series provides five timers (timers A, B, C, F, and G) on-chip.
Table 9.1 outlines the functions of timers A, B, C, F, and G.
Table 9.1 Timer Functions
Name Functions
Event
Internal Clock Input Pin
Timer A • 8-bit timer
• Interval timer
φ/8 to φ/8192
—
(8 choices)
• 8-bit timer
• Time base
φ_W/128
—
(choice of 4
overflow periods)
• 8-bit timer
• Clock output
φ/4 to φ/32,
—
φ_W/4 to φ_W/32
(8 choices)
Timer B • 8-bit timer
• Interval timer
φ/4 to φ/8192
(7 choices)
TMIB
• Event counter
Timer C • 8-bit timer
• Interval timer
φ/4 to φ/8192, TMIC
φ_W/4 (7 choices)
• Event counter
• Choice of up- or down-
counting
Timer F
• 16-bit timer
• Event counter
φ/2 to φ/32
(4 choices)
• Can be used as two
independent 8-bit timers
TMIF
• Output compare
Timer G • 8-bit timer
• Input capture
φ/2 to φ/64, φ_W/2 TMIG
(4 choices)
• Interval timer
Waveform
Output Pin Remarks
—
—
TMOW
—
—
TMOFL
TMOFH
Counting
direction can
be controlled
by software or
hardware
—
• Counter clear
designation
possible
• Built-in noise
canceller
circuit for
input capture
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