Renesas RL78/G1P Hardware User Manual page 617

RL78/G1P
(2) HALT mode release
The HALT mode can be released by the following two sources.
(a) Release by unmasked interrupt request
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.
release signal
Status of CPU
High-speed system clock or
High-speed on-chip oscillator clock
Notes 1. For details of the standby release signal, see Figure 15-1.
2. Wait time for HALT mode release
 When vectored interrupt servicing is carried out
Main system clock: 15 to 16 clock
 When vectored interrupt servicing is not carried out
Main system clock: 9 to 10 clock
Remark The broken lines indicate the case when the interrupt request which has released the standby mode is
acknowledged.
R01UH0895EJ0100 Rev.1.00
Nov 29, 2019
Figure 16-3. HALT Mode Release by Interrupt Request Generation
HALT
instruction
Standby
Note 1
Operating mode
CHAPTER 16 STANDBY FUNCTION
Interrupt
request
Wait
HALT mode
Oscillation
Note 2
Operating mode
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