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Hi I am trying to know what are the options available to expand the external memory on the circuit with M68hc11e2 to greater than 64K. Any suggestions/references appreciated Thanks Sai --- Kerry Berland <> wrote: > If you go to Motorola's website under DOCUMENTS, ARCHIVES > and search for that part number they vector you to Hibbert > and you can get the following two-page preliminary document: > > http://merchant.hibbertco.com/fs22/deact/fs11/motorola/MC68HC11PA8_REV0.PDF > > All this is, however, is a two-page preliminary description that shows a list > of features and a block diagram. It's dated 1993 and the copyright notice > seems to indicate it was a part generated in the UK. Based on the fact > that the part is in the archives, it seems to have been discontinued. > Don't know if it made it to volume production or not.... if so would expect > to be able to find a more complete data sheet in the archives... > maybe somebody at Motorola can send you more documentation. > > Wish this was a more useful message... > > Best regards, > > Kerry Berland > > Silicon Engines > 2101 Oxford Road > Des Plaines, IL 60018 USA > 847-803-6860 > Fax 847-803-6870 > ----- Original Message ----- > From: John Beatty > To: m68HC11 > Sent: Wednesday, March 19, 2003 2:18 AM > Subject: [m68HC11] MC68HC11PA8 Information > Hi > > Does anyone have information on this chip? I cannot find it on > Motorola's site. As a minimum I would like to know: > > 1. The memory map - start and finish addresses of Control Registers, > RAM, ROM and EEPROM > > 2. The Control Registers - names, function and addresses > > Any help much appreciated. > > John Beatty > > Yahoo! Groups Sponsor > ADVERTISEMENT > > > To unsubscribe from this group, send an email to: > > > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. > [Non-text portions of this message have been removed] __________________________________________________

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In a message dated 3/19/03 6:03:42 PM Eastern Standard Time, writes: > I am trying to know what are the options available to expand the > external memory on the circuit with M68hc11e2 to greater than 64K. Study any moto app note on expanded mode. You need a 373 latch to catch the lo addr byte, then you need a 138 hung on A12 A13 and A15 addr lines. A15 can be a chip select for a 32k flash rom, and the 138 decodes the remaining 32k into 8 hunks of 4k at 0x0000,1,2,3,4,5,6,and 0x7000. You can hang rams, roms, serial chips, latches, a/d converts etc at these addresses. Or just buy a board from Tech Arts that has all this set up and ready to program. [Non-text portions of this message have been removed]

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Hi, See the PSD9xx family of Programmable System Devices at www.psdst.com It can provide up to 256 Kbytes (32 Kbytes x 8) of Main Flash memory, up to 32 Kbytes ( 8Kbytes x 4) of Secondary Flash memory, up to 32Kbytes of SRAM and over 2000 gates of Flash programmable logic. The PSD913F2 is approx 10 USD, the PSD954F2 at approx 18 USD. Available at Mouser. Great chips. Hope this helps. Regards Jean ----- Original Message ----- From: "Sai Prasad Gonuguntla" <> To: <> Sent: Wednesday, March 19, 2003 6:01 PM Subject: [m68HC11] Options to expand external memory to greater than 64K > Hi > I am trying to know what are the options available to expand the > external memory on the circuit with M68hc11e2 to greater than 64K. > Any suggestions/references appreciated > > Thanks

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Sai -- The HC11 architecture only provides a 16 bit address bus, thus addressing memory beyond 64K is not physically possible. This leaves your only option to implement some sort of external, hardware paging scheme. This is a litte tricky from a hardware point of view and very tricky software wise. Depending on what you want to put in the extended memory space, you may be able to accomplish something by using serial memory accessed via the SPI interface. All-in-all, for the HC11 forget it, switch to a larger chip. Some of the HC12s have paged memory support that some of the C compilers support. I believe the ImageCraft ICC12 development package is one such compiler. Or, switch to a serious chip such as the 683xx family which supports up to, I think, 16MB directly (24 bit address bus). Good luck, Bob Smith --- 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 804/745-1065 ----- Original Message ----- From: "Sai Prasad Gonuguntla" <> To: <> Sent: Wednesday, March 19, 2003 6:01 PM Subject: [m68HC11] Options to expand external memory to greater than 64K > Hi > I am trying to know what are the options available to expand the > external memory on the circuit with M68hc11e2 to greater than 64K. > Any suggestions/references appreciated > > Thanks > > Sai > > --- Kerry Berland <> wrote: > > If you go to Motorola's website under DOCUMENTS, ARCHIVES > > and search for that part number they vector you to Hibbert > > and you can get the following two-page preliminary document: > > > > http://merchant.hibbertco.com/fs22/deact/fs11/motorola/MC68HC11PA8_REV0.PDF > > > > All this is, however, is a two-page preliminary description that shows a list > > of features and a block diagram. It's dated 1993 and the copyright notice > > seems to indicate it was a part generated in the UK. Based on the fact > > that the part is in the archives, it seems to have been discontinued. > > Don't know if it made it to volume production or not.... if so would expect > > to be able to find a more complete data sheet in the archives... > > maybe somebody at Motorola can send you more documentation. > > > > Wish this was a more useful message... > > > > Best regards, > > > > Kerry Berland > > > > Silicon Engines > > 2101 Oxford Road > > Des Plaines, IL 60018 USA > > 847-803-6860 > > Fax 847-803-6870 > > > > > > ----- Original Message ----- > > From: John Beatty > > To: m68HC11 > > Sent: Wednesday, March 19, 2003 2:18 AM > > Subject: [m68HC11] MC68HC11PA8 Information > > > > > > Hi > > > > Does anyone have information on this chip? I cannot find it on > > Motorola's site. As a minimum I would like to know: > > > > 1. The memory map - start and finish addresses of Control Registers, > > RAM, ROM and EEPROM > > > > 2. The Control Registers - names, function and addresses > > > > Any help much appreciated. > > > > John Beatty > > > > Yahoo! Groups Sponsor > > ADVERTISEMENT > > > > > > > > > > To unsubscribe from this group, send an email to: > > > > > > > > >

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Switch to the 'K' series. They can address up to 1M of memory Sai Prasad Gonuguntla To: < cc: m> Subject: [m68HC11] Options to expand external memory to greater than 64K 03/19/2003 05:01 PM Please respond to m68HC11 Hi I am trying to know what are the options available to expand the external memory on the circuit with M68hc11e2 to greater than 64K. Any suggestions/references appreciated Thanks Sai --- Kerry Berland <> wrote: > If you go to Motorola's website under DOCUMENTS, ARCHIVES > and search for that part number they vector you to Hibbert > and you can get the following two-page preliminary document: http://merchant.hibbertco.com/fs22/deact/fs11/motorola/MC68HC11PA8_REV0.PDF > > All this is, however, is a two-page preliminary description that shows a list > of features and a block diagram. It's dated 1993 and the copyright notice > seems to indicate it was a part generated in the UK. Based on the fact > that the part is in the archives, it seems to have been discontinued. > Don't know if it made it to volume production or not.... if so would expect > to be able to find a more complete data sheet in the archives... > maybe somebody at Motorola can send you more documentation. > > Wish this was a more useful message... > > Best regards, > > Kerry Berland > > Silicon Engines > 2101 Oxford Road > Des Plaines, IL 60018 USA > 847-803-6860 > Fax 847-803-6870 > ----- Original Message ----- > From: John Beatty > To: m68HC11 > Sent: Wednesday, March 19, 2003 2:18 AM > Subject: [m68HC11] MC68HC11PA8 Information > Hi > > Does anyone have information on this chip? I cannot find it on > Motorola's site. As a minimum I would like to know: > > 1. The memory map - start and finish addresses of Control Registers, > RAM, ROM and EEPROM > > 2. The Control Registers - names, function and addresses > > Any help much appreciated. > > John Beatty > > Yahoo! Groups Sponsor > ADVERTISEMENT > > > To unsubscribe from this group, send an email to:

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Hello Sai The PSD9xxx family of chips are excellent, and very easy to use. I currently use the PSD834F2 which provides the following: 2Mbits Main Code 256k Flash Boot code CPLD/DPLD Extra I/O Allows transparent paging of 64 sectors of external flash (which we use as a databank). Using a JTAG connector you can program the chip while it is still on the PCB (ISP). The Flash Boot code allows you to reprogram the Main code via a serial connection with your PC (which is proving an invaluable resource). There are a great deal of data sheets and design app notes concerning the PSDxx and the HC11xx devices, as they are very commonly used together. And last but not least, they are very cheap and well supported. Hope this helps Pete **************************************************** Peter Mackel Design Engineer Tel: +44 2891 278528 Fax: +44 2891 270156 Email: **************************************************** -----Original Message----- From: Sai Prasad Gonuguntla [mailto:] Sent: 19 March 2003 23:02 To: Subject: [m68HC11] Options to expand external memory to greater than 64K Hi I am trying to know what are the options available to expand the external memory on the circuit with M68hc11e2 to greater than 64K. Any suggestions/references appreciated Thanks Sai --- Kerry Berland <> wrote: > If you go to Motorola's website under DOCUMENTS, ARCHIVES > and search for that part number they vector you to Hibbert > and you can get the following two-page preliminary document: http://merchant.hibbertco.com/fs22/deact/fs11/motorola/MC68HC11PA8_REV0.PDF > > All this is, however, is a two-page preliminary description that shows a list > of features and a block diagram. It's dated 1993 and the copyright notice > seems to indicate it was a part generated in the UK. Based on the fact > that the part is in the archives, it seems to have been discontinued. > Don't know if it made it to volume production or not.... if so would expect > to be able to find a more complete data sheet in the archives... > maybe somebody at Motorola can send you more documentation. > > Wish this was a more useful message... > > Best regards, > > Kerry Berland > > Silicon Engines > 2101 Oxford Road > Des Plaines, IL 60018 USA > 847-803-6860 > Fax 847-803-6870 > ----- Original Message ----- > From: John Beatty > To: m68HC11 > Sent: Wednesday, March 19, 2003 2:18 AM > Subject: [m68HC11] MC68HC11PA8 Information > Hi > > Does anyone have information on this chip? I cannot find it on > Motorola's site. As a minimum I would like to know: > > 1. The memory map - start and finish addresses of Control Registers, > RAM, ROM and EEPROM > > 2. The Control Registers - names, function and addresses > > Any help much appreciated. > > John Beatty > > Yahoo! Groups Sponsor > ADVERTISEMENT > > > To unsubscribe from this group, send an email to:

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