NEC NEC PD78081(A), User Manual

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CHAPTER 13 STANDBY FUNCTION
(c) Clear upon RESET input
As is the case with normal reset operation, a program is executed after branch to the reset vector address.
Figure 13-3. HALT Mode Release by RESET Input
Remarks 1. f
X
: main system clock oscillation frequency
2. Values in parentheses when operated at f
x
= 5.0 MHz
Table 13-2. Operation after HALT Mode Release
Release Source MK
××
PR
××
IE ISP Operation
Maskable interrupt 0 0 0
×
Next address instruction execution
request 0 0 1
×
Interrupt service execution
0 1 0 1 Next address instruction execution
0 1
×
0
0 1 1 1 Interrupt service execution
1
× × ×
HALT mode hold
Non-maskable interrupt – –
× ×
Interrupt service execution
request
RESET input – –
× ×
Reset processing
Remark
×
: Don’t care
HALT
Instruction
RESET
Signal
Operating
Mode
Clock
Reset
Period
HALT Mode
Oscillation
Oscillation
stop
Oscillation
Stabilization
Wait Status
Operating
Mode
Oscillation
Wait
(2
17
/f
x
: 26.2 ms)