Microcontrollers Data Sheet

Advance Information MC68HC(7)08KH12 — Rev. 1.1 228 Freescale Semiconductor
15.5 Port-E Keyboard Interrupt Block Diagram
Figure 15-4. Port-E Keyboard Interrupt Block Diagram
KBEIE0
KBEIE3
.
.
.
DQ
CK
CLR
V
DD
MODEE
IMASKE
KEYBOARD
INTERRUPT FF
VECTOR FETCH
DECODER
ACKE
INTERNAL BUS
RESET
KBE3
KBE0
SYNCHRONIZER
KEYEF
Port-E
Keyboard
Interrupt
Request
PEPE0
PEPE3
TO PULLUP ENABLE
TO PULLUP ENABLE