Datasheet
78K0/Kx2-L CHAPTER 18 KEY INTERRUPT FUNCTION
R01UH0028EJ0400 Rev.4.00 636
Sep 27, 2010
CHAPTER 18 KEY INTERRUPT FUNCTION
78K0/KY2-L
(
μ
PD78F055x)
78K0/KA2-L
(
μ
PD78F056x)
78K0/KB2-L
(
μ
PD78F057x)
78K0/KC2-L
(
μ
PD78F058x)
Item
16 pins 20, 25 32 pins 30 pins 40, 44 pins 48 pins
Key interrupt
−
4 ch 6 ch
18.1 Functions of Key Interrupt
A key interrupt (INTKR) can be generated by setting the key return mode register (KRM) and inputting a falling edge to
the key interrupt input pins (KRn).
Table 18-1. Assignment of Key Interrupt Detection Pins
Flag Description
KRMn Controls KRn signal in 1-bit units.
Remark n = 0 to 3: 40, 44-pin products of 78K0/KC2-L
n = 0 to 5: 48-pin products of 78K0/KC2-L
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