Reset Function; Configuration And Operation Status Of Reset Function - NEC MuPD754202 Datasheet

9.

RESET FUNCTION

9.1 Configuration and Operation Status of Reset Function

There are three kinds of reset input: the external reset signal (RESET), the reset signal sent from the basic
interval/watchdog timer, and the reset signal generated by a falling edge signal from KRn in the STOP mode. When
any of these reset signals is input, an internal reset signal is generated. The configuration is shown in Figure
9-1.
RESET
KRREN
V
DD
Mask option
P70/KR4
P71/KR5
P72/KR6
P73/KR7
28
Figure 9-1. Configuration of Reset Function
V
DD
Mask option
Q R
S
One-shot pulse generator
Falling edge detector
µ PD754202, 754202(A)
Internal reset signal
Watchdog timer overflow
S Q
WDF
R
Instruction
S Q
KRF
R
Instruction
STOP mode
Interrupt