Renesas RX Series User Manual

R01UH0823EJ0100 Rev.1.00 Page 422 of 1823
Jul 31, 2019
RX23W Group 20. Event Link Controller (ELC)
20.3 Operation
20.3.1 Relation between Interrupt Handling and Event Linking
The peripheral modules incorporated in the MCU are provided with the interrupt request status flags and the interrupt
enable bits to enable/disable these interrupt requests. When an interrupt request is generated in a peripheral module, the
corresponding interrupt request status flag becomes 1. If the corresponding interrupt request is enabled then, the interrupt
is requested to the CPU.
In contrast, the event link controller (ELC) uses the interrupt requests generated by various peripheral modules as event
signals, interconnects (links) peripheral modules, and then, makes peripheral modules perform direct interlinked
operation among them without using software. Event signals can be output regardless of the setting of the corresponding
interrupt enable bit.
Figure 20.2 shows the relation between the interrupt handling and ELC.
Figure 20.2 Relation between Interrupt Handling and ELC
Interrupt request
(event)
Interrupt status flag
Interrupt enable bit
Event link
controller (ELC)
Interrupt
controller (ICU)
CPU
I/O port
Peripheral module
Peripheral module
Peripheral module
Pin

Renesas RX Series Specifications

General

Brand	Renesas
Model	RX Series
Category	Microcontrollers
Language	English