R8CSLASH20 datasheet(154/501 Pages) RENESAS

154 / 501 page

R8C/20 Group, R8C/21 Group

14. Timers

Rev.2.00 Aug 27, 2008

Page 138 of 458

REJ09B0250-0200

Figure 14.14

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.

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 : Stops counting

1 : Counting(3)

Nothing is assigned. If necessary, set to 0.

When read, the content is 0.

—

(b7-b3)

—

Timer RB count start bit(1)

Timer RB count forcible stop

bit(1,2)

Refer to 14.2.5 Notes on Tim er RB.

TSTART

TCSTF

Timer RB count status flag(1)

TSTOP

b3 b2

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

stopped. When read, the content is 0.

b1 b0

0 : Stops counting

1 : Starts counting

b7 b6 b5 b4

Timer RB One-Shot Control Register

(2)

Symbol

Address

After Reset

TRBOCR

0109h

00h

Bit Symbol

Bit Name

Function

NOTES:

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 10b (programmable w ait one-shot generation mode).

—

(b7-b3)

—

Timer RB one-shot start bit

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

generated. When read, the content is 0.

Timer RB one-shot stop bit

When this bit is set to 1, the one-shot pulses

(including programmable w ait one-shot pulses)

stops. When read, the content is 0.

b7 b6 b5 b4 b3 b2

0 : One-shot stopping

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

b1 b0

TOSSP

TOSSTF

TOSST

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