Freescale Semiconductor MC68HC08KH12 - Manual (Page 234)

Adv
a
nce I
n
fo
rm
at
ion
M
C6
8HC(
7)
08
KH1
2
— Re
v.
1
.1
234
Fr
e
e
sc
ale
Se
m
ico
nd
uc
to
r
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