Renesas RL78/G1P Hardware User Manual page 615

16-bit single-chip microcontroller

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16.3 Standby Function Operation

16.3.1 HALT mode

(1) HALT mode

The HALT mode is set by executing the HALT instruction. HALT mode can be set regardless of whether the CPU

clock before the setting was the high-speed system clock or high-speed on-chip oscillator clock.

The operating statuses in the HALT mode are shown below.

Caution Because the interrupt request signal is used to clear the HALT mode, if the interrupt mask flag is 0

(the interrupt processing is enabled) and the interrupt request flag is 1 (the interrupt request signal is

generated), the HALT mode is not entered even if the HALT instruction is executed in such a

R01UH0895EJ0100 Rev.1.00

Nov 29, 2019

CHAPTER 16 STANDBY FUNCTION