Renesas 4513 Informacje Techniczne Pobierz pdf (Strona 56)

4513/4514 Group

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

Fig. 38 State transition

Fig. 39 Set source and clear source of the P flag

Fig. 40 Start condition identified example using the SNZP in-

struction

Software start

P = “1”

Yes

Warm start

Cold start

: Time required to stabilize the f(X

) oscillation is automatically generated by hardware.

Stabilizing time a

POF instruction

is executed

f(X

) oscillation

Return input

(Stabilizing time a )

(RAM back-up

mode)

f(X

) stop

Reset

(Stabilizing time a )

Power down flag P

POF instruction

Reset input or

voltage drop detection

circuit output

● Set source POF instruction is executed

● Clear source Reset input

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Renesas 4513 Informacje Techniczne Strona 56