Freescale Semiconductor MC68HC08KH12 manual Port-D Keyboard Interrupt Enable Register, 226

KEYDF — Port-D Keyboard Flag Bit

This read-only bit is set when a keyboard interrupt is pending on port-D. Reset clears the KEYDF bit.

1 = Keyboard interrupt pending

0 = No keyboard interrupt pending

ACKD — Port-D Key board Acknowledge Bit

Writing a logic 1 to this write-only bit clears the keyboard interrupt request on port-D. ACKD always reads as logic 0. Reset clears ACKD.

IMASKD — Port-D Keyboard Interrupt Mask Bit

Writing a logic 1 to this read/write bit prevents the output of the keyboard interrupt mask from generating interrupt requests on port-D. Reset clears the IMASKD bit.

1 = Keyboard interrupt requests masked

0 = Keyboard interrupt requests not masked

MODED — Port-D Keyboard Tr iggering Sensitivity Bit

This read/write bit controls the triggering sensitivity of the keyboard interrupt pins on port-D. Reset clears MODED.

1 = Keyboard interrupt requests on falling edges and low levels 0 = Keyboard interrupt requests on falling edges only

15.4.3.2 Port-D Keyboard Interrupt Enable Register

The port-D keyboard interrupt enable register enables or disables each port-D pin to operate as a keyboard interrupt pin.

Address:

Read:

Write:

Reset:

$000D
Bit 7	6	5	4	3	2	1	Bit 0
KBDIE7	KBDIE6	KBDIE5	KBDIE4	KBDIE3	KBDIE2	KBDIE1	KBDIE0
0	0	0	0	0	0	0	0

Figure 15-3. Port-D Keyboard Interrupt Enable Register (KBDIER)

Advance Information	MC68HC(7)08KH12 — Rev. 1.1
226	Freescale Semiconductor