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