R8CSLASH20 datasheet(231/501 Pages) RENESAS

231 / 501 page

R8C/20 Group, R8C/21 Group

14. Timers

Rev.2.00 Aug 27, 2008

Page 215 of 458

REJ09B0250-0200

Figure 14.77

TRDSTR Register in Reset Synchronous PWM Mode

Timer RD Start Register

(1)

Symbol

Address

After Reset

TRDSTR

0137h

11111100b

Bit Symbol

Bit Name

Function

NOTES:

—

(b7 - b4)

Nothing is assigned. If necessary, set to 0.

When read, the content is 1.

Set the TRDSTR register using the MOV instruction (do not use the bit handling instruction). Refer to 14.3.12.1

TRDSTR Register of Notes on Tim er RD.

TRD1 count operation select bit

0 : Count stops at the compare match

w ith the TRDGRA1 register

1 : Count continues at the compare

match w ith the TRDGRA1 register

—

TRD0 count operation select bit

0 : Count stops at the compare match

w ith the TRDGRA0 register

1 : Count continues at the compare

match w ith the TRDGRA0 register

CSEL0

TSTART1

TRD1 count start flag(5)

[This bit is not used in reset

synchronous PWM mode]

0 : Count stops(3)

1 : Count starts

TRD0 count start flag(4)

0 : Count stops(2)

1 : Count starts

b7 b6 b5 b4 b3 b2

CSEL1

b1 b0

TSTART0

When the CSEL0 bit is set to 1, w rite 0 to the TSTART0 bit.

When the CSEL1 bit is set to 1, w rite 0 to the TSTART1 bit.

When the CSEL0 bit is set to 0 and generating the compare match signal(TRDIOA0), this bit is set to 0 (count stops).

When the CSEL1 bit is set to 0 and generating the compare match signal(TRDIOA1), this bit is set to 0 (count stops).

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