upd78f0124m6gba1-8et Renesas Electronics Corporation., upd78f0124m6gba1-8et Datasheet - Page 353
upd78f0124m6gba1-8et
Manufacturer Part Number
upd78f0124m6gba1-8et
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0124M6GBA1-8ET.pdf
(545 pages)
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(2) HALT mode release
The HALT mode can be released by the following two sources.
(a) Release by unmasked interrupt request
internal oscillation clock,
When an unmasked interrupt request is generated, the HALT mode is released. If interrupt acknowledgment
is enabled, vectored interrupt servicing is carried out. If interrupt acknowledgment is disabled, the next
address instruction is executed.
Remarks 1. The broken lines indicate the case when the interrupt request which has released the standby
or subsystem clock
X1 input clock,
Status of CPU
release signal
2. The wait time is as follows:
Standby
mode is acknowledged.
• When vectored interrupt servicing is carried out: 8 or 9 clocks
• When vectored interrupt servicing is not carried out: 2 or 3 clocks
Figure 18-3. HALT Mode Release by Interrupt Request Generation
Operating mode
CHAPTER 18 STANDBY FUNCTION
instruction
HALT
User’s Manual U16315EJ3V1UD
HALT mode
Interrupt
request
Oscillation
Wait
Wait
Operating mode
353
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