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MC68HC08JL8CSP Datasheet(PDF) 7 Page - Freescale Semiconductor, Inc |
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MC68HC08JL8CSP Datasheet(HTML) 7 Page - Freescale Semiconductor, Inc |
7 / 8 page HC908JL8AD/D AMENDMENTS TO MC68HC908JL8/D, REV. 2 Addendum to MC68HC908JL8 Technical Data AMENDMENTS TO MC68HC908JL8/D, REV. 2 Keyboard Interrupt Page 243, Figure 15-2. Keyboard Interrupt Block Diagram — Replace with the following block diagram: Computer Operating Properly (COP) Page 254, 16.8.2 Stop Mode — Replace the two paragraphs: From: Stop mode turns off the ICLK input to the COP if the STOP_ICLKDIS bit is set in configuration register 2 (CONFIG2). Service the COP immediately before entering or after exiting stop mode to ensure a full COP timeout period after entering or exiting stop mode. After reset, the STOP_ICLKDIS bit is clear by default and ICLK is enabled during stop mode. To: Stop mode turns off the ICLK input to the COP and clears the COP prescaler. Service the COP immediately before entering or after exiting stop mode to ensure a full COP timeout period after entering or exiting stop mode. To prevent inadvertently turning off the COP with a STOP instruction, a configuration option is available that disables the STOP instruction. When the STOP bit in the configuration register has the STOP instruction is disabled, execution of a STOP instruction results in an illegal opcode reset. KBIE0 KBIE7 . . . DQ CK CLR VDD MODEK IMASKK KEYBOARD INTERRUPT FF VECTOR FETCH DECODER ACKK INTERNAL BUS RESET KBI7 KBI0 SYNCHRONIZER KEYF KEYBOARD INTERRUPT REQUEST TO PULLUP ENABLE TO PULLUP ENABLE NOTE: To prevent false interrupts, user should use software to debounce keyboard interrupt inputs. Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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