s908ab32ag0cfue Freescale Semiconductor, Inc, s908ab32ag0cfue Datasheet - Page 346

• Manufacturer Part Number: s908ab32ag0cfue
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Keyboard Interrupt Module (KBI)
19.3 Features
19.4 I/O Pins
Technical Data
346
Addr.
$001B
$0021
Keyboard Interrupt Enable
Register Name
Generic Pin Name
and Control Register
Register (KBIER)
Keyboard Status
KBD0
KBD1
KBD2
KBD3
KBD4
KBI
(KBSCR)
Features of the keyboard interrupt module include the following:
The five 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 19-1. KBI I/O Register Summary
Table 19-1. Pin Name Conventions
Five keyboard interrupt pins with pullup devices
Separate keyboard interrupt enable bits and one keyboard
interrupt mask
Built-in pull-up device if input pin is configured as input port bit
Programmable edge-only or edge- and level- interrupt sensitivity
Exit from low-power modes
Bit 7
0
0
0
0
Keyboard Interrupt Module (KBI)
Full MCU Pin Name
= Unimplemented
PTG0/KBD0
PTG1/KBD1
PTG2/KBD2
PTH0/KBD3
PTH1/KBD4
6
0
0
0
0
5
0
0
0
0
KBIE4
4
0
0
0
Pin Selected for KBI Function by
KBIE3
KEYF
Table
3
KBIEx Bit in KBIER
0
0
MC68HC908AB32
KBIE0
KBIE1
KBIE2
KBIE3
KBIE4
19-1. The generic pin
ACKK
KBIE2
Freescale Semiconductor
2
0
0
0
IMASKK
KBIE1
1
0
0
—
MODEK
Rev. 1.1
KBIE0
Bit 0
0
0