Rev. 6.00, 08/04, page 237 of 628
Section 9 Timers
9.1
Overview
This LSI provides six timers: timers A, C, F, G, and a watchdog timer, and an asynchronous event
counter. The functions of these timers are outlined in table 9.1.
Table 9.1
Timer Functions
Name
Functions
Internal Clock
Event
Input Pin
Waveform
Output Pin
Remarks
Timer A
•
8-bit
timer
—
—
•
Interval
function
φ
/8 to
φ
/8192
(8 choices)
•
Time
base
φ
w/128 (choice of 4
overflow periods)
Timer C
•
8-bit
timer
•
Interval
function
•
Event counting function
•
Up-count/down-count
selectable
φ
/4 to
φ
/8192,
φ
W
/4
(7 choices)
TMIC
—
Up-count/
down-count
controllable by
software or
hardware
Timer F
•
16-bit
timer
•
Event counting function
•
Also usable as two
independent 8-bit timers
•
Output
compare
output
function
φ
/4 to
φ
/32,
φ
w/4
(4 choices)
TMIF
TMOFL
TMOFH
Timer G
•
8-bit
timer
•
Input capture function
•
Interval
function
φ
/2 to
φ
/64,
φ
W
/4
(4 choices)
TMIG
—
Counter clearing
option
Built-in capture
input signal
noise canceler
Watchdog
timer
*
•
Reset
signal
generated
when 8-bit counter
overflows
φ
/8192
φ
W
/32
—
—
H8/38024,
H8/38024S,
H8/38024F-
ZTAT Group
φ
/64 to
φ
/8192
φ
W
/32
On-chip
oscillator
H8/38124 Group
Содержание H8/38024 Series
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