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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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M68ICS08GR 데이터시트(PDF) 177 Page - Freescale Semiconductor, Inc |
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M68ICS08GR 데이터시트(HTML) 177 Page - Freescale Semiconductor, Inc |
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177 / 408 page  Keyboard Interrupt (KBI) Functional Description MC68HC908GR8 — Rev 4.0 Technical Data MOTOROLA Keyboard Interrupt (KBI) 177 Figure 13-1. Keyboard Module Block Diagram KB0IE KB3IE . . . KEYBOARD INTERRUPT DQ CK CLR VDD MODEK IMASKK KEYBOARD INTERRUPT FF REQUEST VECTOR FETCH DECODER ACKK INTERNAL BUS RESET TO PULLUP KBD3 KBD0 TO PULLUP SYNCHRONIZER KEYF ENABLE ENABLE Addr. Register Name Bit 7 654321 Bit 0 $001A Keyboard Status and Control Register (INTKBSCR) Read: 0000 KEYF 0 IMASKK MODEK Write: ACKK Reset: 00000000 $001B Keyboard Interrupt Enable Register (INTKBIER) Read: KBIE3 KBIE2 KBIE1 KBIE0 Write: Reset: 0000 = Unimplemented Figure 13-2. I/O Register Summary Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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