R8C2K datasheet(323/471 Pages) RENESAS

323 / 471 page

R8C/2K Group, R8C/2L Group

16. Timers

Rev.1.10

Dec 21, 2007

Page 306 of 450

REJ09B0406-0110

BFC0, BFD0, BFC1, BFD1: Bits in TRDMR register

Registers TRDGRC0, TRDGRC1, TRDGRD0, and TRDGRD1 are not used in PWM3 mode. To use them as

buffer registers, set bits BFC0, BFC1, BFD0, and BFD1 to 0 (general register) and write a value to the

TRDGRC0, TRDGRC1, TRDGRD0, or TRDGRD1 register. After this, bits BFC0, BFC1, BFD0, and BFD1

may be set to 1 (buffer register).

Table 16.48

TRDGRji Register Functions in PWM3 Mode

Setting

PWM Output Pin

TRDGRA0

−

General register. Set the PWM period.

Setting range: Value set in TRDGRA1 register or above

TRDIOA0

TRDGRA1

General register. Set the changing point (the active level

timing) of PWM output.

Setting range: Value set in TRDGRA0 register or below

TRDGRB0

General register. Set the changing point (the timing that

returns to initial output level) of PWM output.

Setting range: Value set in TRDGRB1 register or above

Value set in TRDGRA0 register or below

TRDIOB0

TRDGRB1

General register. Set the changing point (active level timing) of

PWM output.

Setting range: Value set in TRDGRB0 register or below

TRDGRC0 BFC0 = 0 (These registers is not used in PWM3 mode.)

−

TRDGRC1 BFC1 = 0

TRDGRD0 BFD0 = 0

TRDGRD1 BFD1 = 0

TRDGRC0 BFC0 = 1 Buffer register. Set the next PWM period.

(Refer to 16.4.2 Buffer Operation.)

Setting range: Value set in TRDGRC1 register or above

TRDIOA0

TRDGRC1 BFC1 = 1 Buffer register. Set the changing point of next PWM output.

(Refer to 16.4.2 Buffer Operation.)

Setting range: Value set in TRDGRC0 register or below

TRDGRD0 BFD0 = 1 Buffer register. Set the changing point of next PWM output.

(Refer to 16.4.2 Buffer Operation.)

Setting range: Value set in TRDGRD1 register or above,

setting value or below in TRDGRC0 register.

TRDIOB0

TRDGRD1 BFD1 = 1 Buffer register. Set the changing point of next PWM output.

(Refer to 16.4.2 Buffer Operation.)

Setting range: Value set in TRDGRD0 register or below

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