mc68hc908ld64 Freescale Semiconductor, Inc, mc68hc908ld64 Datasheet - Page 322

• Manufacturer Part Number: mc68hc908ld64
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Keyboard Interrupt Module (KBI)
21.3 Features
21.4 I/O Pins
Data Sheet
322
Addr.
$004E
$004F
Keyboard Interrupt Enable
Generic Pin Name
Register Name
Keyboard Status and
KBI0–KBI7
Control Register
KBI
(KBSCR)
Register
(KBIER)
Features of the keyboard interrupt module (KBI) include:
The eight keyboard interrupt pins are shared with standard port I/O pins.
The full name of the KBI pins are listed in
name appear in the text that follows.
Reset:
Reset:
Read:
Write:
Read:
Write:
•
•
•
•
Figure 21-1. KBI I/O Register Summary
Table 21-1. Pin Name Conventions
Eight keyboard interrupt pins with pull-up devices
Separate keyboard interrupt enable bits and one keyboard
interrupt mask
Programmable edge-only or edge- and level- interrupt sensitivity
Exit from low-lower modes
KBIE7
Bit 7
0
0
0
Keyboard Interrupt Module (KBI)
PTA0/KBI0–PTA7/KBI7
Full MCU Pin Name
= Unimplemented
KBIE6
6
0
0
0
KBIE5
5
0
0
0
KBIE4
4
0
0
0
Pin Selected for KBI Function by
KBIE3
KEYF
Table
3
0
0
KBIEx Bit in KBIER
KBIE0–KBIE7
MC68HC908LD64
21-1. The generic pin
KBIE2
ACKK
Freescale Semiconductor
2
0
0
0
IMASKK
KBIE1
1
0
0
—
MODEK
Rev. 3.0
KBIE0
Bit 0
0
0