Block Diagram; External Signal Description - ROHS MC9S08QE128 Reference Manual

Chapter 7 Keyboard Interrupt (S08KBIV2)
During stop2 mode, the KBI is disabled. Upon wake-up from stop2 mode, the KBI module will be in the
reset state.
7.1.3.3 KBI in Active Background Mode
When the microcontroller is in active background mode, the KBI will continue to operate normally.
7.1.4

Block Diagram

The block diagram for the keyboard interrupt module is shown
1
0
KBIP0
S
KBIPE0
KBEDG0
1
KBIPn
0
S
KBIPEn
KBEDGn
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.
PTB3
Port Pin
KBI1P7
KBI1 Pin
PTD7
Port Pin
KBI2P7
KBI2 Pin
140
V
KBMOD
Figure 7-1. KBI Block Diagram
Table 7-1. KBI1 Pin Mapping
PTB2 PTB1
KBI1P6 KBI1P5
Table 7-2. KBI2 Pin Mapping
PTD6 PTD5
KBI2P6 KBI2P5
MC9S08QE128 MCU Series Reference Manual, Rev. 2
Figure
KBACK
RESET
DD
CLR
D Q
CK
KEYBOARD
INTERRUPT FF
PTB0 PTA3
KBI1P4 KBI1P3
PTD4 PTD3
KBI2P4 KBI2P3
7-1.
BUSCLK
KBF
SYNCHRONIZER
STOP BYPASS
STOP
KBIE
PTA2 PTA1
KBI1P2 KBI1P1
PTD2 PTD1
KBI2P2 KBI2P1
Freescale Semiconductor
KBI
INTERRUPT
T
REQUES
PTA0
KBI1P0
PTD0
KBI2P0