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CHAPTER 24 STANDBY FUNCTION
HALT
Instruction
RESET
Signal
Operating
Mode
Clock
Reset
PeriodHALT Mode
Oscillation
Oscillation
stop
Oscillation
Stabilization
Wait Status
Operating
Mode
Oscillation
Wait
(2
17
/f
x
: 26.2 ms)
(d) Release by RESET input
As is the case with normal reset operation, a program is executed after branch to the reset vector
address.
Figure 24-3. HALT Mode Released by RESET Input
Remarks 1. f
X: Main system clock oscillation frequency
2. Figures in parentheses apply to operation with f
X = 5.0 MHz.
Table 24-2. Operation after HALT Mode Release
Release Source MKxx PRxx IE ISP Operation
Maskable interrupt 0 0 0 x Next address instruction execution
request 0 0 1 x Interrupt service execution
0 1 0 1 Next address instruction execution
01x0
0 1 1 1 Interrupt service execution
1 x x x HALT mode hold
Non-maskable interrupt – – x x Interrupt service execution
request
Test input 0 – x x Next address instruction execution
1 – x x HALT mode hold
RESET input – – x x Reset processing
x: Don’t care