Datasheet

RL78/L12 CHAPTER 18 KEY INTERRUPT FUNCTION
R01UH0330EJ0200 Rev.2.00 725
Dec 13, 2013
18.2 Configuration of Key Interrupt
The key interrupt includes the following hardware.
Table 18-2. Configuration of Key Interrupt
Item Configuration
Control register Key return control register (KRCTL)
Key return mode register 0 (KRM0)
Port mode registers 1, 3, 7, 14 (PM1, PM3, PM7, PM14)
Note
Note The port mode registers (PMxx) to be set differ depending on the product. For details, see 18.3.4 Port mode
registers 1, 3, 7, 14 (PM1, PM3, PM7, PM14).
Figure 18-1. Block Diagram of Key Interrupt
INTKR
KRF2
KRMD
KREG
KR2
KRF3
KRMD
KREG
KR3
Key return mode register (KRM0)
KRM03
KRM02
KRM00KRM01
KR1
KR0
KRF1
KRMD
KREG
KRF0
KRMD
KREG
Selector Selector Selector Selector
<R>