MC68HC705SR3 MOTOROLA [Motorola, Inc], MC68HC705SR3 Datasheet - Page 45

• Manufacturer Part Number: MC68HC705SR3
• Description: High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcontroller Units
• Manufacturer: MOTOROLA [Motorola, Inc]

The KBIE bit in the Miscellaneous Control Register controls the master enable for the keyboard
interrupts.
KBIE — KeyBoard Interrupt Enable
KBIC — KeyBoard Interrupt Clear
This is a write-only bit and always read as “0”.
The Keyboard Interrupt Mask Register (KBIMR) masks individual keyboard interrupt pins and
setting of the internal pull-up resistors on port A.
KBEx — PAx Keyboard Interrupt Enable
MC68HC05SR3
Miscellaneous Control Register
1 (set)
0 (clear) –
1 (set)
0 (clear) –
1 (set)
0 (clear) –
KBIMR
Freescale Semiconductor, Inc.
–
–
–
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Keyboard interrupts master enabled.
Keyboard interrupts master disabled.
Writing a “1” clears the keyboard interrupt latch.
Writing a “0” has no effect.
Keyboard interrupt enabled for PAx. A 20K internal pull-up resistor
is connected. High to low transition on PAx will cause a keyboard
interrupt.
Keyboard interrupt for PAx pin is masked. Any transitions on PAx will
not set any flags.
Address bit 7
Address bit 7
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$0C
$0B
RESETS AND INTERRUPTS
KBE7 KBE6 KBE5 KBE4 KBE3 KBE2 KBE1 KBE0 0000 0000
KBIE
KBIC
bit 6
bit 6
INTO
bit 5
bit 5
INTE
bit 4
bit 4
LVRE
bit 3
bit 3
bit 2
bit 2
SM
IRQ2F IRQ2E 0001 0000
bit 1
bit 1
bit 0
bit 0
MOTOROLA
on reset
on reset
State
State
TPG
5-9
5