7513 datasheet(46/66 Pages) RENESAS

46 / 66 page

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

7513 Group

TOUT/

φ CLOCK OUTPUT FUNCTION

The internal system clock

φ or timer 2 divided by 2 (TOUT output)

can be output from port P43 by setting the TOUT/

φ output control

bit (bit 1) of the timer 123 mode register and the TOUT/

φ output

control register. Set bit 3 of the port P4 direction register to “1”

when outputting the clock.

Fig. 49 Structure of TOUT/ f output-related register

TOUT/

φ output control bit

0 :

φ clock output

1 : TOUT output

Not used (return “0” when read)

TOUT/

φ output control register

(CKOUT : address 002A16)

Timer 123 mode register

(T123M : address 002916)

TOUT output active edge switch bit

0 : Start on “H” output

1 : Start on “L” output

TOUT/

φ output control bit

0 : TOUT/

φ output disable

1 : TOUT/

φ output enable

Timer 2 write control bit

0 : Write data in latch and timer

1 : Write data in latch only

Timer 2 count source selection bit

0 : Timer 1 output

1 : f(XIN)/16

(or f(XCIN)/16 in low-speed mode✽)

Timer 3 count source selection bit

0 : Timer 1 output

1 : f(XIN)/16

(or f(XCIN)/16 in low-speed mode✽)

Timer 1 count source selection bit

0 : f(XIN)/16

(or f(XCIN)/16 in low-speed mode✽)

1 : f(XCIN)

Not used (return “0” when read)

✽ : Internal clock

φ is f(XCIN)/2 in low-speed mode.

7513 Datasheet(PDF) 46 Page - Renesas Technology Corp

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