CHAPTER 19 STANDBY FUNCTION
User’s Manual U16899EJ2V0UD
383
(b) Release by RESET input
When the RESET signal is input, HALT mode is released, and then, as in the case with a normal reset
operation, the program is executed after branching to the reset vector address.
Figure 19-4. HALT Mode Release by RESET Input (1/2)
(1) When high-speed system clock is used as CPU clock
HALT
instruction
RESET signal
High-speed
system clock
Operating mode
HALT mode
Reset
period
Operation
stopped
Operating mode
Oscillates
Oscillation
stopped
Oscillates
Status of CPU
(High-speed
system clock)
Oscillation stabilization time
(2
11
/f
XP
to 2
16
/f
XP
)
(Ring-OSC clock)
(17/f
R
)
(2) When Ring-OSC clock is used as CPU clock
HALT
instruction
RESET signal
Ring-OSC clock
Operating mode
HALT mode
Reset
period
Operation
stopped
Operating mode
Oscillates
Oscillation
stopped
Oscillates
Status of CPU
(Ring-OSC clock)
(17/f
R
)
(Ring-OSC clock)
Remarks 1. f
XP
: High-speed system clock oscillation frequency
2. f
R
: Ring-OSC clock oscillation frequency
Содержание MuPD78F0132H
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