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| 型號(hào)： | MC68HC05SU3AP |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | PLASTIC, DIP-40 |
| 文件頁(yè)數(shù)： | 36/80頁(yè) |
| 文件大?。?/td> | 1619K |
| 代理商： | MC68HC05SU3AP |
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MC68HC05SU3A
5-9
RESETS AND INTERRUPTS
5
The KBIE bit in the Miscellaneous Control Register controls the master enable for the keyboard
interrupts.
KBIE — KeyBoard Interrupt Enable
1 (set)
–
Keyboard interrupts master enabled.
0 (clear) –
Keyboard interrupts master disabled.
KBIC — KeyBoard Interrupt Clear
This is a write-only bit and always read as “0”.
1 (set)
–
Writing a “1” clears the keyboard interrupt latch.
0 (clear) –
Writing a “0” has no effect.
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
1 (set)
–
Keyboard interrupt enabled for PAx. A 20K
internal pull-up resistor
is connected. High to low transition on PAx will cause a keyboard
interrupt.
0 (clear) –
Keyboard interrupt for PAx pin is masked. Any transitions on PAx will
not set any ags.
Address
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
Miscellaneous Control Register
$0C
KBIE
KBIC
INTO
INTE
LVRE
SM
IRQ2F IRQ2E 0001 0000
Address
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
KBIMR
$0B
KBE7
KBE6
KBE5
KBE4
KBE3
KBE2
KBE1
KBE0 0000 0000
TPG
39
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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