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Hitachi H8/300L Series Manual page 83

Single-chip microcomputer
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Timer C
Function: Timer C is an 8-bit up/down counter that supports two operating modes, namely
free-running mode and auto-reload mode.
Features: • Can be switched between functioning as an up counter and as a down counter.
• The timer C clock can be selected from one of seven internal clocks or an
external clock. (It can also function as an external event counter.)
• Generates a counter overflow interrupt.
Block Diagram
System clock ø
Seven internal clock periods
UD (up/down counter
switch)
External event input
Seven internal clock periods
ø
W
<Notation>
TMC:
Timer mode register C
TCC:
Timer counter C
TLC:
Timer load register C
IRRTC:
Timer C overflow interrupt request flag
Timer C Internal Clock Periods
Product Series
ø/8192 ø/4096 ø/2048 ø/1024 ø/512 ø/256 ø/128 ø/64 ø/32 ø/16 ø/8 ø/4 ø/2 øw/4
H8/3614 Series
H8/3714 Series
C
H8/3724 Series
H8/3754 Series
H8/3814 Series
H8/3834 Series
C
H8/3877 Series
H8/3927 Series
Prescaler S
Prescaler W
83
Peripheral Functions
TMC
TCC
TLC
IRRTC
External
Event
Input
Supported
Supported

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