R27 datasheet(206/487 Pages) RENESAS

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R8C/26 Group, R8C/27 Group

14. Timers

Rev.2.10

Sep 26, 2008

Page 187 of 453

REJ09B0278-0210

Figure 14.30

TRCSR Register

Timer RC Status Register

Symbol

Address

After Reset

TRCSR

0123h

01110000b

Bit Symbol

Bit Name

Function

NOTE:

—

(b6-b4)

—

Nothing is assigned. If necessary, set to 0.

When read, the content is 1.

OVF

Overflow flag

[Source for setting this bit to 0]

Write 0 after read.(1)

[Source for setting this bit to 1]

Refer to the table below .

Input capture / compare match flag

IMFC

[Source for setting this bit to 0]

Write 0 after read.(1)

[Source for setting this bit to 1]

Refer to the table below .

Input capture / compare match flag

IMFB

Input capture / compare match flag

IMFA

b7 b6 b5 b4

The w riting results are as follow s:

• This bit is set to 0 w hen the read result is 1 and 0 is w ritten to the same bit.

• This bit remains unchanged even if the read result is 0 and 0 is w ritten to the same bit. (This bit remains 1

even if it is set to 1 from 0 after reading, and w riting 0.)

• This bit remains unchanged if 1 is w ritten to it.

b3 b2

IMFD

b1 b0

Input capture Function

Output Compare

Function

TRCIOA pin input edge(1)

TRCIOB pin input edge(1)

TRCIOC pin input edge(1)

TRCIOD pin input edge(1)

NOTES:

Edge selected by bits IOj1 to IOj0 (j = A, B, C, or D).

Includes the condition that bits BFC and BFD are set to 1 (buffer registers of registers TRCGRA

and TRCGRB).

Bit Symbol

IMFA

IMFB

IMFC

IMFD

OVF

When the values of the registers TRC and TRCGRC

match.(2)

When the values of the registers TRC and TRCGRD

match.(2)

PWM2 Mode

When the TRC register overflow s.

When the values of the registers TRC and TRCGRA match.

When the values of the registers TRC and TRCGRB match.

Timer Mode

PWM Mode

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