R29 datasheet(172/473 Pages) RENESAS

172 / 473 page

R8C/28 Group, R8C/29 Group

14. Timers

Rev.2.10

Sep 26, 2008

Page 153 of 441

REJ09B0279-0210

Figure 14.13

Registers TRBCR and TRBOCR

Timer RB Control Register

Symbol

Address

After Reset

TRBCR

0108h

00h

Bit Symbol

Bit Name

Function

NOTES:

3. Indicates that count operation is in progress in timer mode or programmable w aveform mode. In programmable one-

shot generation mode or programmable w ait one-shot generation mode, indicates that a one-shot pulse trigger has

been acknow ledged.

Timer RB count start bit(1)

Timer RB count forcible stop

bit(1, 2)

Refer to 14.2.5 Notes on Tim er RB for precautions regarding bits TSTART, TCSTF and TSTOP.

TSTART

b7 b6 b5 b4 b3 b2

When this bit is set to 1, the count is forcibly

stopped. When read, its content is 0.

b1 b0

0 : Count stops

1 : Count starts

When the TSTOP bit is set to 1, registers TRBPRE, TRBSC, TRBPR, and bits TSTART and TCSTF, and the TOSSTF bit

in the TRBOCR register are set to values after a reset.

0 : Count stops

1 : During count(3)

Nothing is assigned. If necessary, set to 0.

When read, the content is 0.

—

(b7-b3)

—

TCSTF

Timer RB count status flag(1)

TSTOP

Timer RB One-Shot Control Register

(2)

Symbol

Address

After Reset

TRBOCR

0109h

00h

Bit Symbol

Bit Name

Function

NOTES:

0 : One-shot stopped

1 : One-shot operating (Including w ait period)

b1 b0

TOSSP

TOSSTF

TOSST

b7 b6 b5 b4 b3

Timer RB one-shot start bit

When this bit is set to 1, one-shot trigger

generated. When read, its content is 0.

Timer RB one-shot stop bit

When this bit is set to 1, counting of one-shot

pulses (including programmable w ait one-shot

pulses) stops. When read, its content is 0.

Nothing is assigned. If necessary, set to 0.

When read, the content is 0.

Timer RB one-shot status

flag(1)

When 1 is set to the TSTOP bit in the TRBCR register, the TOSSTF bit is set to 0.

This register is enabled w hen bits TMOD1 to TMOD0 in the TRBMR register is set to 10b (programmable one-shot

generation mode) or 11b (programmable w ait one-shot generation mode).

—

(b7-b3)

—

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