7721 datasheet(200/577 Pages) RENESAS

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REAL-TIME OUTPUT

7721 Group User’s Manual

10–7

10.3 Setting of real-time output

Figures 10.3.1 to 10.3.3 show an initial setting example for registers relevant to the real-time output. Note

that when using interrupts, set up to enable the interrupts. For details, refer to “CHAPTER 7. INTERRUPTS.”

10.3 Setting of real-time output

Fig. 10.3.1 Initial setting example for registers relevant to real-time output (1)

P60–P67 pins functions as the programmable I/O port.

Continue to “Figure 10.3.2”

Processing of avoiding undefined output before starting pulse output (Note)

Set to initial output level

of real-time output

0 : “L” level

1 : “H” level

RTP00

RTP01

RTP02

RTP03

RTP10

RTP11

RTP12

RTP13

Port P6 register (Address E16)

Setting port P6 direction register

Set the bits corresponding to the

selected pulse output pins to “1.”

Note: This processing can be neglected

if the system is not affected by

undefined output.

Setting pulse output mode

Real-time output control register (Address 6216)

Pulse output mode select bit

0 : Pulse mode 0

1 : Pulse mode 1

When pulse mode 0

is selected

Setting output data

0 : “L” level

1 : “H” level

RTP00

RTP01

RTP02

RTP03

Pulse output data register 0

(Address 1A16)

RTP10

RTP11

RTP12

RTP13

! : It may be either “0” or “1.”

RTP00

RTP01

RTP02

RTP03

RTP10

RTP11

RTP12

RTP13

Port P6 direction register (Address 1016)

When pulse mode 1

is selected

Setting output data

Pulse output data register 1

(Address 1C16)

0 : “L” level

1 : “H” level

! : It may be either “0” or “1.”

RTP00

RTP01

0 : “L” level

1 : “H” level

Pulse output data register 0

(Address 1A16)

Pulse output data register 1

(Address 1C16)

0 : “L” level

1 : “H” level

RTP02

RTP03

RTP10

RTP11

RTP12

RTP13

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