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13.2 External Interrupt 1 (Key Input Circuit)
The external interrupt 1 (key input circuit) has 8 inputs.
■ Block Diagram of External Interrupt 1 (Key Input Circuit)
Figure 13.2-1 Block Diagram of Key input circuit
■ Register List of External Interrupt 1 (Key Input Circuit)
Figure 13.2-2 Register list of External interrupt 1 (Key input circuit)
KEY7
KEY6
KIS7 KIS6 KIS5 KIS4 KIS3 KIS2 KIS1 KIS0
KIE7 KIE6 KIE5 KIE4 KIE3 KIE2 KIE1 KIE0
KEY5
KEY0
KEY1
KEY2
KEY3
KEY4
IRQ23
SR
R
Read-STB
KEYS
KEYC
Internal Bus
70bit
KEYC
KEYS
Key Input Control Register
Key Input Status Register
000096
HAddress:
000097
H