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Section 9 Timers
Rev. 6.00 Sep 12, 2006 page 203 of 526
REJ09B0326-0600
Section 9 Timers
9.1 Overview
The H8/3644 Group provides five timers: timers A, B1, V, X, and a watchdog timer. 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)
•
Clock output
φ
/4 to
φ
/32
φ
W
/4 to
φ
W
/32
(8 choices)
TMOW
Timer B1
•
8-bit timer
•
Interval timer
•
Event counter
φ
/4 to
φ
/8192
(7 choices)
TMIB
Timer V
•
8-bit timer
•
Event counter
•
Output control by dual
compare match
•
Counter clearing option
•
Count-up start by
external trigger input can
be specified
φ
/4 to
φ
/128
(6 choices)
TMCIV TMOV
Timer X
•
16-bit free-running timer
•
2 output compare
channels
•
4 input capture channels
•
Counter clearing option
•
Event counter
φ
/2 to
φ
/32
(3 choices)
FTCI
FTIA
FTIB
FTIC
FTID
FTOA
FTOB
Watchdog
timer
•
Reset signal generated
when 8-bit counter
overflows
φ
/8192
Summary of Contents for F-ZTAT H8/3642A Series
Page 6: ...Rev 6 00 Sep 12 2006 page iv of xx ...
Page 8: ...Rev 6 00 Sep 12 2006 page vi of xx ...
Page 22: ...Rev 6 00 Sep 12 2006 page xx of xx ...
Page 124: ...Section 5 Power Down Modes Rev 6 00 Sep 12 2006 page 102 of 526 REJ09B0326 0600 ...
Page 188: ...Section 6 ROM Rev 6 00 Sep 12 2006 page 166 of 526 REJ09B0326 0600 ...
Page 190: ...Section 7 RAM Rev 6 00 Sep 12 2006 page 168 of 526 REJ09B0326 0600 ...
Page 298: ...Section 9 Timers Rev 6 00 Sep 12 2006 page 276 of 526 REJ09B0326 0600 ...
Page 378: ...Section 12 A D Converter Rev 6 00 Sep 12 2006 page 356 of 526 REJ09B0326 0600 ...
Page 446: ...Section 13 Electrical Characteristics Rev 6 00 Sep 12 2006 page 424 of 526 REJ09B0326 0600 ...