NEC 78K0 User Manual page 456

RESET signal
Status of CPU
Subsystem clock
Remark f : Ring-OSC clock oscillation frequency
R
Table 21-3. Operation in Response to Interrupt Request in HALT Mode
Release Source
Maskable interrupt
request
RESET input
×: don't care
456
CHAPTER 21 STANDBY FUNCTION
Figure 21-4. HALT Mode Release by RESET Input (2/2)
(3) When subsystem clock is used as CPU clock
HALT instruction
Operating
mode
HALT mode
Subsystem
clock
MK×× PR××
0 0
0 0
0 1
0 1
0 1
×
1
− −
User's Manual U15947EJ2V0UD
Reset Operation
period stopped
Operating mode
(17/f ) (Ring-OSC clock)
R
Oscillates
IE ISP Operation
×
0 Next address
instruction execution
×
1 Interrupt servicing
execution
0 1 Next address
*
instruction execution
×
0
1 1 Interrupt servicing
execution
× ×
HALT mode held
× ×
Reset processing