I have 100 of the 711E9 mask described in http://www.freescale.com/files/microcontrollers/doc/errata/MSE711E9_4K81H.pdf and all attempts to write code into the devices have failed. The contract manufacturerer failed using some sort of BP Microsystems unit, including assistance from BP Microssystems. Years ago I made an adapter to convert DIP-28 to PLCC-52 per a Motorola appnote or page in the 711HC9 manual. With this adapter the device programs as if it were a 12kbyte 27C256. This technique still works with old stock. Fails with the 4K81H mask, even with the Vpp resistor and capacitor described above. Continues to fail with fresh parts from the tubes. What means for programming parts still works? Am guessing it can self-program itself if only I can boot it into the special modes. Nohau removed the programming function from the Windows versions of their software. Is looking a lot like I need to get the old DOS version running to try that method. Hate booting the entire emulator (I have the "box" so don't have to boot the entire computer) for each and every chip. Fortunately I have a $150 PLCC zif socket. The 27C256 technique won't write EEPROM or the CONFIG register. Am smarter now than I was 10 years ago and could now change the code to tickle the COP bit. Would rather not change the code as my compiler version (Introl C11 3.06 vs 3.07) has also changed. Altho I have briefly tested code for this project with my current compiler. Once Upon A Time I had a number of the HC11EVB's laying around. Can't find them at the moment. Is the EVB still available? Is there something else available on the hobbiest market with RS-232 buffer prewired? (My product uses serial but not RS-232). |
Programming 68HC711E9
Started by ●February 17, 2005
Reply by ●February 17, 20052005-02-17
In a message dated 2/17/05 11:29:19 A.M. Eastern Standard Time, writes: Once Upon A Time I had a number of the HC11EVB's laying around. Can't find them at the moment. Is the EVB still available? Is there something else available on the hobbiest market with RS-232 buffer prewired? (My product uses serial but not RS-232). ====================== Tech Arts has an EVB replacement |
Reply by ●February 17, 20052005-02-17
And sometimes you can find EVB's on Ebay. You might also try to find EVBU's there. Emmett Redd Ph.D. mailto: Associate Professor (417)836-5221 Department of Physics, Astronomy, and Materials Science Southwest Missouri State University Fax (417)836-6226 901 SOUTH NATIONAL Dept (417)836-5131 SPRINGFIELD, MO 65804 USA > > In a message dated 2/17/05 11:29:19 A.M. Eastern Standard Time, > writes: > > Once Upon A Time I had a number of the HC11EVB's laying around. Can't > find them at the moment. Is the EVB still available? Is there > something else available on the hobbiest market with RS-232 buffer > prewired? (My product uses serial but not RS-232). > ====================== > Tech Arts has an EVB replacement |