Datasheet

Key Wakeups
MC68HC812A4 Data Sheet, Rev. 7
94 Freescale Semiconductor
9.2.2 Port D Data Direction Register
Read: Anytime
Write: Anytime
This register is not in the map in wide expanded modes or in special expanded narrow mode with MODE
register bit EMD set.
Data direction register D is associated with port D and designates each pin as an input or output.
DDRD7–DDRD0 — Data Direction Port D Bits
1 = Associated pin is an output.
0 = Associated pin is an input.
9.2.3 Port D Key Wakeup Interrupt Enable Register
Read: Anytime
Write: Anytime
This register is not in the map in wide expanded modes and in special expanded narrow mode with MODE
register bit EMD set.
KWIED7–KWIED0 — Key Wakeup Port D Interrupt Enable Bits
1 = Interrupt for the associated bit is enabled.
0 = Interrupt for the associated bit is disabled.
Address: $0007
Bit 7654321Bit 0
Read:
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Write:
Reset:00000000
Figure 9-2. Port D Data Direction Register (DDRD)
Address: $0020
Bit 7654321Bit 0
Read:
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Write:
Reset:00000000
Figure 9-3. Port D Key Wakeup Interrupt Enable Register (KWIED)