Datasheet

V850ES/JG3 CHAPTER 20 KEY INTERRUPT FUNCTION
R01UH0015EJ0300 Rev.3.00 Page 671 of 870
Sep 30, 2010
CHAPTER 20 KEY INTERRUPT FUNCTION
20.1 Function
A key interrupt request signal (INTKR) can be generated by inputting a falling edge to the eight key input pins (KR0 to
KR7) by setting the KRM register.
Table 20-1. Assignment of Key Return Detection Pins
Flag Pin Description
KRM0 Controls KR0 signal in 1-bit units
KRM1 Controls KR1 signal in 1-bit units
KRM2 Controls KR2 signal in 1-bit units
KRM3 Controls KR3 signal in 1-bit units
KRM4 Controls KR4 signal in 1-bit units
KRM5 Controls KR5 signal in 1-bit units
KRM6 Controls KR6 signal in 1-bit units
KRM7 Controls KR7 signal in 1-bit units
Figure 20-1. Key Return Block Diagram
INTKR
Key return mode register (KRM)
KRM7
KRM6
KRM5 KRM4 KRM3 KRM2 KRM1 KRM0
KR7
KR6
KR5
KR4
KR3
KR2
KR1
KR0