R8C2K datasheet(152/471 Pages) RENESAS

152 / 471 page

R8C/2K Group, R8C/2L Group

16. Timers

Rev.1.10

Dec 21, 2007

Page 135 of 450

REJ09B0406-0110

NOTES:

Rectangular waves are output in these modes. Since the waves are inverted at each overflow, the “H” and “L” level widths of

the pulses are the same.

The underflow interrupt can be set to channel 1.

Table 16.1

Functional Comparison of Timers

Item

Timer RA

Timer RB

Timer RC

Timer RD

Configuration

8-bit timer with 8-bit

prescaler (with reload

8-bit timer with 8-bit

prescaler (with reload

16-bit timer (with input

capture and output

compare)

16-bit timer × 2 (with

input capture and

output compare)

Count

Decrement

Increment

Increment/Decrement

Count sources

• f1

•f2

•f8

•fOCO

•f1

•f2

•f8

• Timer RA underflow

•f1

•f2

•f4

•f8

•f32

• fOCO40M

• TRCCLK

•f1

•f2

•f4

•f8

•f32

• fOCO40M

•TRDIOA0

Function Count of the internal

count source

Timer mode

Timer mode (output

compare function)

Timer mode (output

compare function)

Count of the external

count source

Event counter mode

—

Timer mode (output

compare function)

Timer mode (output

compare function)

External pulse width/

period measurement

Pulse width

measurement mode,

pulse period

measurement mode

—

Timer mode (input

capture function; 4

pins)

Timer mode (input

compare function; 2

channels × 4 pins)

PWM output

Pulse output mode(1),

Event counter mode(1)

Programmable

waveform generation

mode

Timer mode (output

compare function; 4

pins)(1),

PWM mode (3 pins),

PWM2 mode (1 pin)

Timer mode (output

compare function; 2

channels × 4 pins)(1)

PWM mode

(2 channels × 3 pins),

PWM3 mode

(2 channels × 2 pins)

One-shot waveform

output

—

Programmable one-

shot generation mode,

Programmable wait

one-shot generation

mode

PWM mode (3 pins)

PWM mode

(2 channels × 3 pins)

Three-phase

waveforms output

—

Reset synchronous

PWM mode

(2 channels × 3 pins,

Sawtooth wave

modulation),

Complementary PWM

mode

(2 channels × 3 pins,

triangular wave

modulation, dead time)

Input pin

TRAIO

INT0

INT0, TRCCLK,

TRCTRG, TRCIOA,

TRCIOB, TRCIOC,

TRCIOD

INT0, TRDCLK,

TRDIOA0, TRDIOA1,

TRDIOB0, TRDIOB1,

TRDIOC0, TRDIOC1,

TRDIOD0, TRDIOD1

Output pin

TRAO

TRAIO

TRBO

TRCIOA,

TRCIOB, TRCIOC,

TRCIOD

TRDIOA0, TRDIOA1,

TRDIOB0, TRDIOB1,

TRDIOC0, TRDIOC1,

TRDIOD0, TRDIOD1

Related interrupt

Timer RA interrupt,

INT1 interrupt

Timer RB interrupt,

INT0 interrupt

Compare match/input

capture A to D

interrupt,

Overflow interrupt,

INT0 interrupt

Compare match/input

capture A0 to D0

interrupt,

Compare match/input

capture A1 to D1

interrupt,

Overflow interrupt,

Underflow interrupt(2),

INT0 interrupt

Timer stop

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