Microcontrollers Data Sheet

MC68HC(7)08KH12 — Rev. 1.1 Advance Information
Freescale Semiconductor
239
15.6.3.3 Port-F Pull-up Enable Register
The pulll-up enable register enables or disables the pull-up device for
port F.
PFPE7–PFPE0 — Port F pull-up enable bits
These read/write bits enable/disable the pull-up device. Reset sets
DDRF7–DDRF0 to ‘1’s, enabling all port F pull-up devices.
1 = Corresponding port F pin pull-up device enabled
0 = Corresponding port F pin pull-up device disabled
15.7 Wait Mode
The keyboard modules remain active in wait mode. Clearing the IMASKx
bit in the keyboard status and control register enables keyboard interrupt
requests to bring the MCU out of wait mode.
15.8 Stop Mode
The keyboard modules remain active in stop mode. Clearing the
IMASKx bit in the keyboard status and control register enables keyboard
interrupt requests to bring the MCU out of stop mode.
15.9 Keyboard Module During Break Interrupts
The system integration module (SIM) controls whether the keyboard
interrupt latch cam be cleared during the break state. The BCFE bit in
Address: $0042
Bit 7654321Bit 0
Read:
PFPE7 PFPE6 PFPE5 PFPE4 PFPE3 PFPE2 PFPE1 PFPE0
Write:
Reset:11111111
Figure 15-10. Port F Pull-up Enable Register (PFPER)