R8CSLASH2G datasheet(183/344 Pages) RENESAS

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R8C/2G Group

17. Timers

Rev.1.00

Apr 04, 2008

Page 163 of 318

REJ09B0387-0100

Figure 17.14

Registers TRBIOC and TRBMR

Timer RB I/O Control Register

Symbol

Address

After Reset

TRBIOC

010Ah

00h

Bit Symbol

Bit Name

Function

TOPL

Timer RB output level select

bit

Timer RB output sw itch bit

b7 b6 b5 b4 b3 b2

INOSEG

b1 b0

INOSTG

TOCNT

Nothing is assigned. If necessary, set to 0.

When read, the content is 0.

One-shot trigger polarity

select bit

—

(b7-b4)

—

Function varies depending on operating mode.

One-shot trigger control bit

Timer RB Mode Register

Symbol

Address

After Reset

TRBMR

010Bh

00h

Bit Symbol

Bit Name

Function

NOTES:

—

(b6)

—

Timer RB count source

select bits(1)

b5 b4

0 0 : f1

0 1 : f8

1 0 : Timer RA underflow

1 1 : f2

TCK1

Nothing is assigned. If necessary, set to 0.

When read, the content is 0.

The TWRC bit can be set to either 0 or 1 in timer mode. In programmable w aveform generation mode, programmable

one-shot generation mode, or programmable w ait one-shot generation mode, the TWRC bit must be set to 1 (w rite to

reload register only).

TCK0

Change bits TMOD1 and TMOD0; TCK1 and TCK0; and TCKCUT w hen both the TSTART and TCSTF bits in the TRBCR

Timer RB count source

cutoff bit(1)

0 : Provides count source

1 : Cuts off count source

TCKCUT

Nothing is assigned. If necessary, set to 0.

When read, the content is 0.

Timer RB w rite control bit(2)

0 : Write to reload register and counter

1 : Write to reload register only

—

b7 b6 b5 b4

TMOD1

Timer RB operating mode

select bits(1)

b1 b0

0 0 : Timer mode

0 1 : Programmable w aveform generation mode

1 0 : Programmable one-shot generation mode

1 1 : Programmable w ait one-shot generation mode

b3 b2

TWRC

b1 b0

—

(b2)

TMOD0

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