upd78f0114m6gb-8es Renesas Electronics Corporation., upd78f0114m6gb-8es Datasheet - Page 347

• Manufacturer Part Number: upd78f0114m6gb-8es
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(2) STOP mode release
X1 input clock
Ring-OSC clock
X1 input clock is
selected as CPU clock
when STOP instruction
is executed
Ring-OSC clock is
selected as CPU clock
when STOP instruction
is executed
The STOP mode can be released by the following two sources.
(a) Release by unmasked interrupt request
Standby release signal
When an unmasked interrupt request is generated, the STOP mode is released.
stabilization time has elapsed, if interrupt acknowledgment is enabled, vectored interrupt servicing is carried
out. If interrupt acknowledgment is disabled, the next address instruction is executed.
Status of CPU
X1 input clock
STOP mode
Figure 17-6. STOP Mode Release by Interrupt Request Generation (1/2)
STOP mode release
Figure 17-5. Operation Timing When STOP Mode Is Released
Operating mode
(X1 input clock)
Operation stopped
Oscillates
(oscillation stabilization time set by OSTS)
(1) When X1 input clock is used as CPU clock
(17/f
instruction
STOP
CHAPTER 17 STANDBY FUNCTION
R
)
HALT status
User’s Manual U16227EJ3V0UD
Oscillation stopped
STOP mode
Ring-OSC clock
Clock switched
by software
Oscillation stabilization time (set by OSTS)
Oscillation stabilization wait
(HALT mode status)
(set by OSTS)
Oscillates
X1 input clock
X1 input clock
Wait
After the oscillation
Operating mode
(X1 input clock)
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