mc68hc908jb16 Freescale Semiconductor, Inc, mc68hc908jb16 Datasheet - Page 290

• Manufacturer Part Number: mc68hc908jb16
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Keyboard Interrupt Module (KBI)
16.3 Features
16.4 Pin Name Conventions
Technical Data
290
Addr.
$0016
$0017
PTA7/KBA7–PTA0/KBA0
Keyboard Status and Control
Full MCU Pin Name
Keyboard Interrupt Enable
Register Name
(KBSCR)
Register
Register
(KBIER)
Features of the keyboard interrupt module include:
The KBI share eight I/O pins with eight port A I/O pins. The full name of
the I/O pins are listed in
text that follows.
•
•
•
•
Reset:
Reset:
Read:
Read:
Write:
Write:
Figure 16-1. I/O Register Summary
Table 16-1. Pin Name Conventions
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
Keyboard Interrupt Module (KBI)
KBIE7
Bit 7
0
0
0
Generic Pin Name
KBA7–KBA0
= Unimplemented
KBIE6
KBI
6
0
0
0
Table
KBIE5
5
0
0
0
16-1. The generic pin name appear in the
KBIE4
4
0
0
0
Pin Selected for KBI Function by
KBIE3
KEYF
KBIEx Bit in KBIER
3
0
0
KBIE7–KBIE0
MC68HC908JB16
KBIE2
ACKK
Freescale Semiconductor
2
0
0
0
IMASKK
KBIE1
1
0
0
—
MODEK
Rev. 1.1
KBIE0
Bit 0
0
0