Renesas R8C/Tiny Series Handbuch PDF herunterladen (Seite 65)

R8C/10 Group

Rev.1.20 Jan 27, 2006 page 55 of 180

REJ09B0019-0120

12. Timers

The microcomputer has three 8-bit timers and one 16-bit timer. The three 8-bit timers are Timer X, Timer Y,

and Timer Z and each one has an 8-bit prescaler. The 16-bit timer is Timer C and has a capture. All these

timers function independently. The count source for each timer is the operating clock that regulates the

timing of timer operations such as counting and reloading.

Table 12.1 lists functional comparison.

Item Timer X Timer Y Timer Z Timer C

Configuration 8-bit timer 8-bit timer 8-bit timer 16-bit timer

with 8-bit with 8-bit with 8-bit

prescaler prescaler prescaler

Count Down Down Down Up

Count source •f1 •f1 •f1 •f1

•f2 •f8 •f2 •f8

•f8 •fRING •f8 •f32

•f32 •Input from •Timer Y

CNTR1 pin underflow

Function Timer mode provided provided provided not provided

Pulse output mode provided not provided not provided not provided

Event counter mode provided provided

(1)

not provided not provided

Pulse width

measurement mode provided not provided not provided not provided

Pulse period

measurement mode provided not provided not provided not provided

Programmable waveform

generation mode not provided provided provided not provided

Programmable one-shot

generation mode not provided not provided provided not provided

Programmable wait

one-shot generation mode not provided not provided provided not provided

Capture not provided not provided not provided provided

Input pin CNTR0 CNTR1 INT0 TCIN

Output pin CNTR0

CNTR0 CNTR1 TZOUT not provided

Related interrupt Timer X int Timer Y int Timer Z int Timer C int

INT1 int INT2 int INT0 int INT3 int

Timer stop provided provided provided provided

Table 12.1 Functional Comparison

NOTES:

1. Select the input from the CNTR

1 pin as a count source of timer mode.

12. Timers

1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 198 199

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