Releasing Halt Mode By Reset Input; Operation After Release Of Halt Mode - NEC switch User Manual

(c) Releasing by RESET input
When the HALT mode is released by the RESET signal, execution branches to the reset vector address in
the same manner as the ordinary reset operation, and program execution is started.
RESET
signal
Operation
mode
Clock
Remarks 1. f
2. The parenthesized values apply to operation at f
Releasing Source
Maskable interrupt request
Non-maskable interrupt request
RESET input
×: don't care
182
CHAPTER 12
Figure 12-3. Releasing HALT Mode by RESET Input
HALT
instruction
HALT mode
Oscillation
: System clock oscillation frequency
X
Table 12-2. Operation After Release of HALT Mode
MKxx
0
0
1
—
—
User's Manual U12978EJ3V0UD
STANDBY FUNCTION
Wait
15
(2 /f : 5.46 ms)
X
Oscillation
stabilization
Reset
period wait status
Oscillation
stops Oscillation
= 6.0 MHz.
X
IE
0 Executes next address instruction
1 Executes interrupt servicing
×
Retains HALT mode
×
Executes interrupt servicing
— Reset processing
Operation
mode
Operation