MC68HC908AB32 Datasheet, PDF (351/392 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Keyboard Interrupt Module (KBI)
19.5.3 Keyboard Interrupt Enable Register
The keyboard interrupt enable register enables or disables the
corresponding port pin to operate as a keyboard interrupt pin.
Address: $0021
Bit 7
6
5
4
3
2
1
Bit 0
Read: 0
0
0
KBIE4 KBIE3 KBIE2 KBIE1 KBIE0
Write:
Port Pin:
PTH1/ PTH0/ PTG2/ PTG1/ PTG0
KBD4 KBD3 KBD2 KBD1 /KBD0
Reset: 0
0
0
0
0
0
0
0
Figure 19-4. Keyboard Interrupt Enable Register (KBIER)
KBIE4–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 = KBDx pin enabled as keyboard interrupt pin
0 = KBDx pin not enabled as keyboard interrupt pin
19.6 Wait Mode
The keyboard modules remain 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.
19.7 Stop Mode
The keyboard module remains active in stop mode. Clearing the
IMASKK bit in the keyboard status and control register enables keyboard
interrupt requests to bring the MCU out of stop mode.
MC68HC908AB32 — Rev. 1.1
Freescale Semiconductor
Keyboard Interrupt Module (KBI)
Technical Data
351