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I'm having a real challenge trying to sort out the code for EEPROM setup and programming for the HC912D60. I know how the HC11E20 is set up, but I see conflicting methods for the HC912D60 and no example code. In some examples (B32, A4) they set it up like the HC11 (sorta), but then along comes the ref manual for the D60 and in appendix C it talks about setting the EEDIV. Huh? It aint even defined in any definition files I have for the D60. Any code samples out there for either method (using EEDIV or using the HC11_wait_10ms)? wade |
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EEPROM setup/erase/program for HC912D60
Started by ●January 16, 2004
Reply by ●January 16, 20042004-01-16
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Wade, Don't confuse the D60 and D60A. They have very different Flash Programming algorithms. The D60A has the newer SST flash which is also more reliable and has longer life. It also does not require an external 12V programing voltage, and generate the Flash Erase/Programming voltage from its 5V. Hope this helps, Doron Nohau Corporation HC12 In-Circuit Emulators www.nohau.com/emul12pc.html At 10:57 16/01/2004 -0500, you wrote: >I'm having a real challenge trying to sort out the >code for EEPROM setup and programming for the >HC912D60. > >I know how the HC11E20 is set up, but I see conflicting >methods for the HC912D60 and no example code. >In some examples (B32, A4) they set it up like the HC11 >(sorta), but then along comes the ref manual for the >D60 and in appendix C it talks about setting the >EEDIV. Huh? It aint even defined in any definition >files I have for the D60. > >Any code samples out there for either method >(using EEDIV or using the HC11_wait_10ms)? > >wade |
Reply by ●January 18, 20042004-01-18
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On 17 Jan 2004 14:49:37 -0000 writes: > Date: Fri, 16 Jan 2004 18:54:55 +0200 > From: Doron Fael <> > Subject: Re: EEPROM setup/erase/program for HC912D60 > > Wade, > > Don't confuse the D60 and D60A. They have very different Flash > Programming > algorithms. > > The D60A has the newer SST flash which is also more reliable and has > longer > life. It also does not require an external 12V programing voltage, > and > generate the Flash Erase/Programming voltage from its 5V. OK. So, I still would like some init/erase/pgm code for the "original" method. AND since/if the D60A will become the version available in the future when that happens we'll need the code for that too, but I can ignore that for now. That leaves me asking for some EEPROM init/erase/pgm code for the D60. Trial and error consumes too much time to tweak each and every register that MIGHT have something to do with the EEPROM init/erase/program. So if anyone has a code snippet for EEPROM init/erase/program, I would appreciate it, since Motorola does not have an example that I could find on their website. (or does someone know the URL for the AppNote that does?) > Hope this helps, It does make life a little simpler for now. Thanks. > Doron > Nohau Corporation > HC12 In-Circuit Emulators > www.nohau.com/emul12pc.html > > At 10:57 16/01/2004 -0500, you wrote: > >I'm having a real challenge trying to sort out the > >code for EEPROM setup and programming for the > >HC912D60. > > > >I know how the HC11E20 is set up, but I see conflicting > >methods for the HC912D60 and no example code. > >In some examples (B32, A4) they set it up like the HC11 > >(sorta), but then along comes the ref manual for the > >D60 and in appendix C it talks about setting the > >EEDIV. Huh? It aint even defined in any definition > >files I have for the D60. > > > >Any code samples out there for either method > >(using EEDIV or using the HC11_wait_10ms)? > > > >wade > |
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Reply by ●January 18, 20042004-01-18
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Here it is. ;--------------------------------- --------- PROTLCK equ $02 BPROT1 equ $02 EELAT equ $02 EEPGM equ $01 ms100 equ $9C6 ms10 equ $10E ms1 equ $1B ms8 equ $CC us100 equ 176 us30 equ 58 us22 equ 39 us11 equ 19 us10 equ 18 us5 equ 9 us1 equ 2 TEN equ $80 eeprom equ $f80 go_SaveData bclr EEMCR,PROTLCK bclr EEPROT,BPROT1 ;unprotect block 1 jsr EraseEEPROM ldx #DropStatus ;Beginning of RAM to write to EEPROM ldy #eeprom ;Beginning of EEPROM to write to movb #4,byte_count jsr PgmEEPROM bset EEMCR,PROTLCK bset EEPROT,BPROT1 ;unprotect block 1 rts ;--------------------------------- --------- EraseDATA bclr EEMCR,PROTLCK bclr EEPROT,BPROT1 ;unprotect block 1 bsr EraseEEPROM bset EEMCR,PROTLCK bset EEPROT,BPROT1 ;unprotect block 1 rts EraseEEPROM movb #%00001110,EEPROG movb #$FF,eeprom ;write any data to erase nop bset EEPROG,EEPGM movw #1,wait_timer movw #1,wait_timer movw #1,wait_timer movw #1,wait_timer loop1 ldx wait_timer bne loop1 movb #$80,EEPROG ; bclr EEPROG,EEPGM ; bclr EEPROG,EELAT rts ;--------------------------------- --------- PgmEEPROM movb #%10000010,EEPROG PgmEEPROM10 movw 2,x+,2,y+ bset EEPROG,EEPGM movw #1,wait_timer movw #1,wait_timer movw #1,wait_timer movw #1,wait_timer pshx loop2 ldx wait_timer bne loop2 pulx bclr EEPROG,EEPGM dec byte_count bne PgmEEPROM10 bclr EEPROG,EELAT movb #$80,EEPROG rts |
Reply by ●January 19, 20042004-01-19
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At 08:09 AM 1/18/04 -0500, you wrote: > >"original" method. AND since/if the D60A will become the >version available in the future when that happens we'll need the >code for that too, but I can ignore that for now. > The 912D60A has been the only version available for more than a year (more like two). The D60 is only available as a mask ROM. Gary Olmstead Toucan Technology Ventura CA |
