Microcontrollers Data Sheet

Advance Information MC68HC(7)08KH12 — Rev. 1.1 222 Freescale Semiconductor
15.4 Port-D Keyboard Interrupt Block Diagram
Figure 15-1. Port-D Keyboard Interrupt Block Diagram
KBDIE0
KBDIE7
.
.
.
Port-D
DQ
CK
CLR
V
DD
MODED
IMASKD
KEYBOARD
INTERRUPT FF
VECTOR FETCH
DECODER
ACKD
INTERNAL BUS
RESET
TO PULLUP ENABLE
KBD7
KBD0
TO PULLUP ENABLE
SYNCHRONIZER
KEYDF
Keyboard
Interrupt
Request