R8CSLASH20 datasheet(249/501 Pages) RENESAS

249 / 501 page

R8C/20 Group, R8C/21 Group

14. Timers

Rev.2.00 Aug 27, 2008

Page 233 of 458

REJ09B0250-0200

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

Since values cannot be written to the TRDGRB0, TRDGRA1, or TRDGRB1 register directly after count

operation starts (prohibited item), use the TRDGRD0, TRDGRC1, or TRDGRD1 register as a buffer register.

However, to write data to the TRDGRD0, TRDGRC1, or TRDGRD1 register, set bits BFD0, BFC1, and BFD1

to 0 (general register). After this, bits BFD0, BFC1, and BFD1 may be set to 1 (buffer register).

Table 14.32

TRDGRji Register Functions in Complementary PWM Mode

Setting

PWM Output Pin

TRDGRA0

−

General register. Set the PWM period at initialization.

Setting range: Setting value or above in TRD0 register

FFFFh - TRD0 register setting value

or below

Do not write when the TSTART0 and TSTART1 bits in the

TRDSTR register are set to 1 (count starts).

(Output inversed every

half period of TRDIOC0

pin)

TRDGRB0

−

General register. Set the changing point of PWM1 output at

initialization.

Setting range: Setting value or above in TRD0 register

TRDGRA0 register - TRD0 register setting

value or below

Do not write when the TSTART0 and TSTART1 bits in the

TRDSTR register are set to 1 (count starts).

TRDIOB0

TRDIOD0

TRDGRA1

−

General register. Set the changing point of PWM2 output at

initialization.

Setting range: Setting value or above in TRD0 register

TRDGRA0 register - TRD0 register setting

value or below

Do not write when the TSTART0 and TSTART1 bits in the

TRDSTR register are set to 1 (count starts).

TRDIOA1

TRDIOC1

TRDGRB1

−

General register. Set the changing point of PWM3 output at

initialization.

Setting range: Setting value or above in TRD0 register

TRDGRA0 register - TRD0 register setting

value or below

Do not write when the TSTART0 and TSTART1 bits in the

TRDSTR register are set to 1 (count starts).

TRDIOB1

TRDIOD1

TRDGRC0

−

These registers not used in complementary PWM mode.

−

TRDGRD0

BFD0 = 1

Buffer register. Set the changing point of next PWM1 output.

(Refer to 14.3.2 Buffer Operation)

Setting range: Setting value or above in TRD0 register

TRDGRA0 register - TRD0 register setting

value or below

Set this register to the same value as the TRDGRB0 register

for the initialization.

TRDIOB0

TRDIOD0

TRDGRC1

BFC1 = 1

Buffer register. Set the changing point of next PWM2 output.

(Refer to 14.3.2 Buffer Operation)

Setting range: Setting value or above in TRD0 register

TRDGRA0 register - TRD0 register setting

value or below

Set this register to the same value as the TRDGRA1 register

for the initialization.

TRDIOA1

TRDIOC1

TRDGRD1

BFD1 = 1

Buffer register. Set the changing point of next PWM3 output.

(Refer to 14.3.2 Buffer Operation)

Setting range: Setting value or above in TRD0 register

TRDGRA0 register - TRD0 register setting

value or below

Set this register to the same value as the TRDGRB1 register

for the initialization.

TRDIOB1

TRDIOD1

R8C/20 Datasheet(PDF) 249 Page - Renesas Technology Corp

R8C/20 Datasheet(HTML) 249 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL