mc68hc908rc24d Freescale Semiconductor, Inc, mc68hc908rc24d Datasheet - Page 160

• Manufacturer Part Number: mc68hc908rc24d
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Keyboard Interrupt Module (KBI)
15.3 Features
Advance Information
160
$000D
$000E
Addr.
TO PULLUP
TO PULLUP
KBD0
KBD7
ENABLE
ENABLE
Keyboard Status and Control
Keyboard Interrupt Enable
KB0IE
KB7IE
Register Name
Register (KBSCR)
Register (KBIER)
See
See
.
.
.
Figure 15-2. Keyboard Module I/O Register Summary
page 165.
page 166.
Figure 15-1. Keyboard Module Block Diagram
Features of the KBI include:
•
•
•
•
Reset:
Reset:
Read:
Read:
Write:
Write:
Eight keyboard interrupt pins with separate keyboard interrupt
enable bits and one keyboard interrupt mask
Hysteresis buffers
Programmable edge-only or edge- and level- interrupt sensitivity
Exit from low-power modes
MODEK
Keyboard Interrupt Module (KBI)
KBIE7
V
Bit 7
DD
0
0
0
D
CK
CLR
= Unimplemented
KBIE6
0
0
6
0
Q
INTERRUPT FF
KEYBOARD
KBIE5
5
0
0
0
RESET
ACKK
KBIE4
0
0
4
0
IMASKK
SYNCHRONIZER
VECTOR FETCH
INTERNAL BUS
KBIE3
KEYF
DECODER
3
0
0
MC68HC908RC24 — Rev. 1.1
Freescale Semiconductor
KEYF
KBIE2
ACKK
0
0
2
0
IMASKK MODEK
KBIE1
1
0
0
KEYBOARD
INTERRUPT
REQUEST
KBIE0
Bit 0
0
0