6 port-f keyboard interrupt block diagram, Port-f keyboard interrupt block diagram – Freescale Semiconductor MC68HC08KH12 User Manual

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15.6 Port-F Keyboard Interrupt Block Diagram

Figure 15-7. Port-F Keyboard Interrupt Block Diagram

KBFIE0

KBFIE7

.

.

.

D

Q

CK

CLR

V

DD

MODEF

IMASKF

KEYBOARD

INTERRUPT FF

VECTOR FETCH

DECODER

ACKF

INTERNAL BUS

RESET

KBF3

KBF0

SYNCHRONIZER

KEYFF

Port-F

Keyboard

Interrupt

Request

PFPE0

PFPE7

TO PULLUP ENABLE

TO PULLUP ENABLE