4513_03 Datasheet, PDF (62/210 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCOMPUTER

HARDWARE
FUNCTION BLOCK OPERATIONS
RESET FUNCTION
System reset is performed by applying “L” level to RESET pin for
1 machine cycle or more when the following condition is satisfied;
the value of supply voltage is the minimum value or more of the
recommended operating conditions.
Then when “H” level is applied to RESET pin, software starts from
address 0 in page 0.
f(XIN)
RESET
(Note)
f(XIN) is counted 16892 to
16895 times.
Software starts
(address 0 in page 0)
Note: It depends on the internal state of the microcomputer
when reset is performed.
Fig. 32 Reset release timing
Reset input
1 machine cycle or more
f(XIN) is counted 16892 to
16895 times.
0.85VDD
RESET
0.3VDD
Software starts
(address 0 in page 0)
(Note)
Note: Keep the value of supply voltage to the minimum value
or more of the recommended operating conditions.
Fig. 33 RESET pin input waveform and reset operation
4513/4514 Group User’s Manual
1-49