Freescale Semiconductor MC68HC08KH12 manual Port-F Keyboard Interrupt Block Diagram, 234

234

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15.6 Port-F Keyboard Interrupt Block Diagram

INTERNAL BUS

KBF0

VDD

ACKF

RESET

VECTOR FETCH

DECODER

KEYFF

KBFIE0

TO PULLUP ENABLE PFPE0

KBF3

.

.

.

D CLR Q

CK

KEYBOARD

INTERRUPT FF

SYNCHRONIZER

IMASKF

Port-F

Keyboard

Interrupt

Request

KBFIE7

TO PULLUP ENABLE PFPE7

MODEF

Freescale Semiconductor

MC68HC(7)08KH12 — Rev. 1.1

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