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Discussion Groups | M68HC11 | mc68hc711e2fcn2
Technical discussions about Freescale Microcontrollers: M68HC11. (Freescale Semiconductor is a Subsidiary of Motorola).
mc68hc711e2fcn2 - kokhuikang - Dec 31 5:39:00 2004
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can anybody tell me is it possible for me to use MC68HC711E2FCN2's EPROM. How i can do that if i am intend to use bootstrap mode. This MCU doesn't has the quartz window to be exposed to the UV light. So how can i erase the loaded program inside EPROM? Is it i can load the program through MAX232 from computer's serial port? Now is it possible for me to buy MC68HC811E2?? How?Where? How about the price too? Thanks a lot your help. |
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Re: mc68hc711e2fcn2 - Bob Smith - Dec 31 10:07:00 2004
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See below. --- Avoid computer viruses, Practice safe hex --- -- Specializing in small, cost effective embedded control systems -- http://www.smithmachineworks.com/embedprod.html Robert L. (Bob) Smith Smith Machine Works, Inc. 9900 Lumlay Road Richmond, VA 23236 804/745-2608 ----- Original Message ----- From: "kokhuikang" <> To: <> Sent: Friday, December 31, 2004 5:39 AM Subject: [m68HC11] mc68hc711e2fcn2 > > can anybody tell me is it possible for me to use MC68HC711E2FCN2's > EPROM. Where do you get the idea that the E2 has EPROM onchip?. See Section 2.3.4 of the "White Book". Further, you seem to be confused about 'HC11 varients. I've never heard of a MC68HC711E2, I've only seen the MC68HC811E2. See Section 1.5 of the "White Book". > How i can do that if i am intend to use bootstrap mode. ??? This > MCU doesn't has the quartz window to be exposed to the UV light. Correct. > So how can i erase the loaded program inside EPROM? Is it i can load > the program through MAX232 from computer's serial port? Since there ain't no EPROM there, what are you going to load. I think you need to go get the documentation for the 'E2 and read it a bit. > Now is it possible for me to buy MC68HC811E2?? How?Where? How about > the price too? The 'E2 is an obsolete part only obtainable from surplus suppliers and chip-brokers. See http://www.chipdir.org Forget the E2 and look at the E9 or other Moto (Freescale) MCU's!! Best wishes, Bob Smith > > Thanks a lot your help. > > > Yahoo! Groups Sponsor > ADVERTISEMENT > -------------------------------------------------------------------------- ------ > Yahoo! Groups Links > > a.. To |
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Re: mc68hc711e2fcn2 - Author Unknown - Dec 31 10:11:00 2004
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In a message dated 12/31/04 5:42:38 A.M. Eastern Standard Time, writes: can anybody tell me is it possible for me to use MC68HC711E2FCN2's EPROM. How i can do that if i am intend to use bootstrap mode. This MCU doesn't has the quartz window to be exposed to the UV light. So how can i erase the loaded program inside EPROM? Is it i can load the program through MAX232 from computer's serial port? Now is it possible for me to buy MC68HC811E2?? How?Where? How about the price too? Thanks a lot your help. ========================= The E2 is out of production, but there are probably a few around. The 711E2 is OTP... One Time Programmable.... no erase window The F1 and E9 and other HC11s have eraseable eeprom, but not a lot. Better to buy a Tech Arts microstamp that has 32k ram and 32k rom. [Non-text portions of this message have been removed] |
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