HD6433802H Datasheet, PDF (189/435 Pages) Hitachi Semiconductor – Single-Chip Microcomputer

Section 9 Timers
9.1 Overview
The H8/3802 Series provides three timers: timers A, F, and an asynchronous event counter. The
functions of these timers are outlined in table 9.1.
Table 9.1 Timer Functions
Name
Timer A
Functions
Internal Clock
• 8-bit interval timer ø/8 to ø/8192
Event
Input Pin
—
Waveform
Output Pin Remarks
—
• Interval function (8 choices)
Timer F
• Time base
ø_w/128 (choice of 4
overflow periods)
• 16-bit timer
ø/4 to ø/32, ø_w/4 —
(4 choices)
• Also usable as two
independent8-bit
timers.
TMOFL
TMOFH
• Output compare
output function
Asynchro- •
nous
event
•
counter
•
•
16-bit counter
ø/2 to ø/8
Also usable as two ^{(3 choices)}
independent 8-bit
counters
Counts events
asynchronous to ø
and øw
Can count
asynchronous
events
(rising/falling/both
edges) independ-
ently of the MCU's
internal clock
AEVL
—
AEVH
IRQAEC
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