24 Apr 2008 21:05:12

wisdomchina

IC parts MC68HC705C9ACFN description

STOPDIS — STOP Instruction Disable Bit This read-only bit allows emulation of the “STOP disable” mask optio on the MC68HC05C12A. (See 5.10 COP During Stop Mode.) If configured i MC68HC05C9A mode, this bit has no effect and will be forced to regardless of the programmed state.1 = If the MCU enters stop mode, th clock monitor is enabled to force a system reset0 = STOP instructio executed as normal C12COPE — C12A COP Enable Bit This read-only bi enables the COP function when configured in MC68HC05C12A mode. I configured in MC68HC05C9A mode, this bit has no effect and will be forced to 0 regardless of the programme state.1 = When in C12A mode, this enables the C12ACOP watchdog timer.0 When in C12A mode, this disables the C12ACOP watchdog timer.SEC — Security Enable BitThis read-only bit enables the EPRO security feature. Onceprogrammed, this bit helps to prevent externa access to the programmed EPROM data. The EPROM data cannot be verified o modified. 1 = Security enabled 0 = Security disabled NOTE: During power-on reset, the device always will be configured as MC68HC05C9A regardless of the state of the C12A bit. Freescale Semiconductor, Inc. article from http://www.chinaicmart.com/suppliers/623/MC68HC705C9ACFN.htm - Message posted using http://www.talkaboutelectronicequipment.com/group/sci.electronics.cad More information at http://www.talkaboutelectronicequipment.com/faq.htm