R8CSLASH20 datasheet(214/501 Pages) RENESAS

214 / 501 page

R8C/20 Group, R8C/21 Group

14. Timers

Rev.2.00 Aug 27, 2008

Page 198 of 458

REJ09B0250-0200

14.3.6.1

Changing Output Pins in Registers TRDGRCi (i = 0 or 1) and TRDGRDi

The TRDGRCi register can be used as output control of the TRDIOAi pin and the TRDGRDi register can be

used as output control of the TRDIOBi pin. Therefore, each pin output can be controlled as follows:

• TRDIOAi output is controlled by the values in the TRDGRAi and TRDGRCi registers.

• TRDIOBi output is controlled by the values in the TRDGRBi and TRDGRDi registers.

Figure 14.61

Changing Output Pins in Registers TRDGRCi and TRDGRDi

Change output pins in the TRDGRCi and TRDGRDi registers as below:

• Select 0 (change TRDGRji register output pin) by the IOj3 (j = C or D) bit in the TRDIORCi register.

• Set the BFji bit in the TRDMR register to 0 (general register).

• Set the different value in the TRDGRCi register and the TRDGRAi register. Also, set the different value in

the TRDGRDi register and the TRDGRBi register.

TRDIOA0

Output

control

Comparator

TRDGRA0

TRD0

TRDIOC0

Output

control

Comparator

TRDGRC0

Compare match signal

TRDIOB0

Output

control

Comparator

TRDGRB0

TRDIOD0

Output

control

Comparator

TRDGRD0

Channel 0

TRDIOA1

Output

Control

Comparator

TRDGRA1

TRD1

TRDIOC1

Output

Control

Comparator

TRDGRC1

TRDIOB1

Output

Control

Comparator

TRDGRB1

TRDIOD1

Output

Control

Comparator

TRDGRD1

Channel 1

Compare match signal

IOC3 = 0 in

TRDIORC0 register

IOC3 = 1

IOD3 = 0 in

TRDIORD0 register

IOD3 = 1

IOC3 = 0 in

TRDIORC1 register

IOC3 = 1

IOD3 = 0 in

TRDIORD1 register

IOD3 = 1

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