R8CSLASH15 datasheet(95/277 Pages) RENESAS

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R8C/14 Group, R8C/15 Group

13. Timers

Rev.2.10

Jan 19, 2006

Page 83 of 253

REJ09B0164-0210

13. Timers

The microcomputer contains two 8-bit timers with 8-bit prescaler and a 16-bit timer. The two 8-bit timers with

the 8-bit prescaler contain Timer X and Timer Z. These timers contain a reload register to memorize the

default value of the counter. The 16-bit timer is Timer C which contains the input capture and output

compare. All these timers operate independently. The count source for each timer is the operating clock that

regulates the timing of timer operations such as counting and reloading.

Table 13.1 lists Functional Comparison of Timers.

Table 13.1

Functional Comparison of Timers

Item

Timer X

Timer Z

Timer C

Configuration

8-bit timer with 8-bit

prescaler (with

reload register)

8-bit timer with 8-bit

prescaler (with

reload register)

16-bit free-run timer

(with input capture

and output compare)

Count

Decrement

Increment

Count source

• f1

•f2

•f8

•fRING

•f1

•f2

•f8

• Timer X underflow

•f1

•f8

•f32

•fRING-fast

Function

Timer Mode

provided

not provided

Pulse Output Mode

provided

not provided

Event Counter Mode

provided

not provided

Pulse Width Measurement

Mode

provided

not provided

Pulse Period Measurement

Mode

provided

not provided

Programmable Waveform

Generation Mode

not provided

provided

not provided

Programmable one-shot

generation mode

not provided

provided

not provided

Programmable Wait One-

Shot Generation Mode

not provided

provided

not provided

Input Capture Mode

not provided

provided

Output Compare Mode

not provided

provided

Input Pin

CNTR0

INT0

TCIN

Output Pin

CNTR0

TZOUT

CMP0_0 to CMP0_2

CMP1_0 to CMP1_2

Related Interrupt

Timer X interrupt

INT1 interrupt

Timer Y interrupt

INT0 interrupt

Timer C interrupt

INT3 interrupt

Compare 0 interrupt

Compare 1 interrupt

Timer Stop

provided

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