MC68HC908LJ12 Datasheet, PDF (368/413 Pages) Freescale Semiconductor, Inc – 8-bit microcontroller units

Keyboard Interrupt Module (KBI)
19.6.2 Keyboard Interrupt Enable Register
The keyboard interrupt enable register individually enables or disables
the PTA0/KBI0–PTA3/KBI3 and PTD4/KBI4–PTD7/KBI7 pins to operate
as a keyboard interrupt pin.
Address: $001C
Bit 7
Read:
KBIE7
Write:
Reset: 0
6
KBIE6
0
5
KBIE5
0
4
KBIE4
0
3
KBIE3
0
2
KBIE2
0
1
KBIE1
0
Bit 0
KBIE0
0
Figure 19-4. Keyboard Interrupt Enable Register (KBIER)
KBIE7–KBIE0 — Keyboard Interrupt Enable Bits
Each of these read/write bits enables the corresponding keyboard
interrupt pin to latch interrupt requests. Reset clears the keyboard
interrupt enable register.
1 = KBIx pin enabled as keyboard interrupt pin
0 = KBIx pin not enabled as keyboard interrupt pin
19.7 Low-Power Modes
The WAIT and STOP instructions put the MCU in low power-
consumption standby modes.
19.8 Wait Mode
The keyboard interrupt module remains active in wait mode. Clearing the
IMASKK bit in the keyboard status and control register enables keyboard
interrupt requests to bring the MCU out of wait mode.
MC68HC908LJ12 — Rev. 2.1
Freescale Semiconductor
Keyboard Interrupt Module (KBI)
Technical Data
369