XC68HC08KH12 Motorola, XC68HC08KH12 Datasheet - Page 232

• Manufacturer Part Number: XC68HC08KH12
• Description: MICROCONTROLLER
• Manufacturer: Motorola

Keyboard Interrupt Module (KBI)
15.5.3.2 Port-E Keyboard Interrupt Enable Register
Advance Information
232
Address: $000F
Figure 15-6. Port-E Keyboard Interrupt Enable Register (KBEIER)
ACKE — Port-E Keyboard Acknowledge Bit
IMASKE — Port-E Keyboard Interrupt Mask Bit
MODEE — Port-E Keyboard Triggering Sensitivity Bit
The port-E keyboard interrupt enable register enables or disables each
port-E pin to operate as a keyboard interrupt pin and to enable and
disable the pullup device on each port-E pin.
PEPE3–PEPE0 — Port-E Pull-up Enable Bits
Reset:
Read:
Write:
Writing a logic 1 to this write-only bit clears the keyboard interrupt
request on port-E. ACKE always reads as logic 0. Reset clears ACKE.
Writing a logic 1 to this read/write bit prevents the output of the
keyboard interrupt mask from generating interrupt requests on port-E.
Reset clears the IMASKE bit.
This read/write bit controls the triggering sensitivity of the keyboard
interrupt pins on port-E. Reset clears MODEE.
Each of these read/write bits enable or disable the pull-up device on
the corresponding port-E pin. Reset clears these bits.
1 = Keyboard interrupt requests masked
0 = Keyboard interrupt requests not masked
1 = Keyboard interrupt requests on falling edges and low levels
0 = Keyboard interrupt requests on falling edges only
1 = PEPEx pull-up device enabled.
0 = PEPEx pull-up device disabled.
PEPE3
Bit 7
0
Keyboard Interrupt Module (KBI)
PEPE2
6
0
PEPE1
5
0
PEPE0
4
0
KBEIE3
3
0
MC68HC(7)08KH12
KBEIE2
2
0
KBEIE1
1
0
MOTOROLA
—
KBEIE0
Rev. 1.0
Bit 0
0