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Discussion Groups | 68HC12 | EEPROM problem!!
Join our technical discussions about Freescale Microcontrollers: M68HC12. (Freescale Semiconductor is a Subsidiary of Motorola).
EEPROM problem!! - chanojmarian - Feb 11 11:12:00 2004
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Hi, When I am trying to do EEPROM operations with the BDM connected it works fine.But when I disconnect the BDM and try to read or write from EEPROM location it is not working. Also when the BDM is not connected,I am not able to program the EPROT register to 0xFF thru the 0x3fd location (ie the location which automatically updates the EEPROM reg on reset). Rgds, Manoj |
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Errata:EEPROM problem for HCS12D64!! - chanojmarian - Feb 11 11:14:00 2004
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--- In , "chanojmarian" <chanojmarian@y...> wrote: > Hi, > When I am trying to do EEPROM operations with the BDM connected it > works fine.But when I disconnect the BDM and try to read or write > from EEPROM location it is not working. > Also when the BDM is not connected,I am not able to program the EPROT > register to 0xFF thru the 0x3fd location (ie the location which > automatically updates the EEPROM reg on reset). > Rgds, > Manoj |
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Re: Errata:EEPROM problem for HCS12D64!! - Edward Karpicz - Feb 11 11:40:00 2004
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Errata? Nevyziadana :-)? 2L86D works just fine with and without BDM. You shouldn't have any problems with reads from eeprom. But BDM software probably initializes EEDIV for you. Did you forget to write correct value to EEDIV ? Edward > --- In , "chanojmarian" <chanojmarian@y...> > wrote: > > Hi, > > When I am trying to do EEPROM operations with the BDM connected it > > works fine.But when I disconnect the BDM and try to read or write > > from EEPROM location it is not working. > > Also when the BDM is not connected,I am not able to program the > EPROT > > register to 0xFF thru the 0x3fd location (ie the location which > > automatically updates the EEPROM reg on reset). > > Rgds, > > Manoj |
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