Filter
Top Products
II - 39
Chapter 2 CPU Basics
Reset
Sequence at Reset
(1) When reset pin comes to high level from low level, the innternal 14-bit counter (It can be used as
watchdog timer, too.) starts its operation by system clock. The period from starting its count from
its overflow is called oscillation stabilization wait time.
(2) During reset, internal register and special function register are initiated.
(3) After oscillation stabilization wait time, internal reset is released and program is started
from the address written at address X '4000' at interrupt rector table.
Figure 2-8-2 Reset Released Sequence
Oscillation stabilization
wait time
OSC2
/
XO
VDD
NRST
internal RST