Renesas SH7727 General Information Manual page 88

R0P7727TH003TRKE General Information Manual Power Supply Controller
[Supplementary description on application switch key input]
(1) When multiple keys are pressed at the same time, the corresponding bits are all set to "1," and a
KEY_ONF interrupt occurs so long as it is enabled.
(2) If data in the key bit pattern register changes when multiple keys are pressed at the same time, a
KEY_ONF interrupt occurs so long as it is enabled.
- Example -
This KEY_ONF interrupt occurs when the state with switches SW1 and SW2 pressed simultaneously
changes to one with switches SW1 and SW3 pressed simultaneously.
(3) When multiple keys are released in the state with the keys pressed and held, a KEY_OFFI interrupt
occurs so long as it is enabled.
(4) When multiple keys are released, the key states immediately before key release are retained in the key
bit pattern register.
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