R8CSLASH20 datasheet(208/501 Pages) RENESAS

208 / 501 page

R8C/20 Group, R8C/21 Group

14. Timers

Rev.2.00 Aug 27, 2008

Page 192 of 458

REJ09B0250-0200

Figure 14.54

Registers TRDIORA0 to TRDIORA1 in Output Compare Function

Timer RD I/O Control Register Ai (i = 0 or 1)

Symbol

Address

After Reset

TRDIORA0

TRDIORA1

0141h

0151h

10001000b

Bit Symbol

Bit Name

Function

NOTES:

Input capture input sw itch

bit

Set to 1

Nothing is assigned. If necessary, set to 0.

When read, the content is 1.

IOA1

IOA0

TRDGRA control bit

b1 b0

0 0 : Disable pin output by the compare match

(TRDIOAi pin functions as programmable

I/O port)

0 1 : “L” output by the compare match in

the TRDGRAi register

1 0 : “H” output by the compare match in

the TRDGRAi register

1 1 : Toggle output by the compare match

in the TRDGRAi register

TRDGRA mode selection

bit(1)

Set to 0 (output compare) in the output compare

function

IOB2

TRDGRB control bit

b5 b4

0 0 : Disable pin output by the compare match

(TRDIOBi pin functions as programmable

I/O port)

0 1 : “L” output by the compare match

in the TRDGRBi register

1 0 : “H” output by the compare match

in the TRDGRBi

1 1 : Toggle output by the compare match

in the TRDGRBi register

b7 b6 b5 b4

b3 b2

IOA3

b1 b0

IOA2

When selecting 1 (The TRDGRDi register is used as a buffer register of TRDGRBi register) for this bit by the BFDi bit

in the TRDMR register, set the IOD2 bit in the TRDIORCi register to the same as the IOB2 bit in the TRDIORAi register.

—

IOB0

IOB1

When selecting 1 (The TRDGRCi register is used as a buffer register of the TRDGRAi register) for this bit by the BFCi

bit in the TRDMR register, set the IOC2 bit in the TRDIORCi register to the same as the IOA2 bit in the TRDIORAi

TRDGRB mode selection

bit(2)

Set to 0 (output compare) in the output compare

function

—

(b7)

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