Datasheet

Chapter 7 Keyboard Interrupt (S08KBIV2)
MC9S08LC60 Series Data Sheet: Technical Data, Rev. 4
98 Freescale Semiconductor
Figure 7-2. Keyboard Interrupt (KBI) Block Diagram
7.2 External Signal Description
The KBI input pins can be used to detect either falling edges, or both falling edge and low level interrupt
requests. The KBI input pins can also be used to detect either rising edges, or both rising edge and high
level interrupt requests.
The signal properties of KBI are shown in Table 7-1.
Table 7-1. Signal Properties
Signal Function I/O
KBIxPn Keyboard interrupt pins I
DQ
CK
CLR
V
DD
KBMOD
KBIE
KEYBOARD
INTERRUPT FF
KBACK
RESET
SYNCHRONIZER
KBF
STOP BYPASS
STOP
BUSCLK
KBIPEn
0
1
S
KBEDGn
KBIPE0
0
1
S
KBEDG0
KBIxP0
KBIxPn
KBIx
INTERRUPT
REQUEST