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hello everyone im trying to connect the 68hc24 pru to a hc11e1. i have made the follwoing connections and still cant get the pru to interface with the hc11. 68hc24 68hc11 pru mode pin 43: is tied to plus 5 volts AS pin 42: to stra/AS hc11 reset pin 39: reset pin hc11 r/w pin40: r/w/strb hc11 e pin41: buffered enabled pin hc11 pin 35 to 38: a/d multiplexed outputs pc3 to pc0 pin 30 to 33: a/d multiplexed outputs pc7 to pc4 a12 pin6 : hc11 a12 pin a13 pin5: hc11 a13 pin a14 pin 4: hc11 a14 pin a15 pin: hc11 a15 pin irqn pin28: tied to +5 volts thru a 100 k resistor i/o test pin2: tied to gnd gnd pin 29: tied to gnd +vdd pin17: tied to +5 volts cs pin44: hc11 a11 pin strb pin18: r/w /strb pin hc11 stra pin7: AS/stra hc11 im wondering if there is any neccessary decoding needed for the r/w /strb pin and the as/stra pin, since these are dual function pins from the hc11.also is there any necessary intilaization neeeded software wise to make this interface work properly.

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Well, realize that this may not be very helpful-depending on why you¡Çre working with the 68HC24-but my understanding is that the 68HC24 is no longer available (at least outside Motorola for use in its emulators). They have taken the documentation off the website, last time I looked. If this is for a new product, suggest you take a look at the PSD813 series from ST. These parts provide glueless connection to the 68HC11, provide the port replacement function, and also include flash and RAM memory. Best regards, Kerry Berland Silicon Engines 2101 Oxford Road 847-803-6860 Fax 847-803-6870 Des Plaines, IL 60018 USA -----Original Message----- From: MIKE [mailto:] Sent: Monday, November 17, 2003 6:45 PM To: Subject: [m68HC11] help with the 68hc24 pru hello everyone im trying to connect the 68hc24 pru to a hc11e1. i have made the follwoing connections and still cant get the pru to interface with the hc11. 68hc24 68hc11 pru mode pin 43: is tied to plus 5 volts AS pin 42: to stra/AS hc11 reset pin 39: reset pin hc11 r/w pin40: r/w/strb hc11 e pin41: buffered enabled pin hc11 pin 35 to 38: a/d multiplexed outputs pc3 to pc0 pin 30 to 33: a/d multiplexed outputs pc7 to pc4 a12 pin6 : hc11 a12 pin a13 pin5: hc11 a13 pin a14 pin 4: hc11 a14 pin a15 pin: hc11 a15 pin irqn pin28: tied to +5 volts thru a 100 k resistor i/o test pin2: tied to gnd gnd pin 29: tied to gnd +vdd pin17: tied to +5 volts cs pin44: hc11 a11 pin strb pin18: r/w /strb pin hc11 stra pin7: AS/stra hc11 im wondering if there is any neccessary decoding needed for the r/w /strb pin and the as/stra pin, since these are dual function pins from the hc11.also is there any necessary intilaization neeeded software wise to make this interface work properly. Yahoo! Groups Sponsor <http://rd.yahoo.com/SIG=12ca627f8/M=259395.3614674.4902533.1261774/D=eg roupweb/S=1706554205:HM/EXP=1069202791/A=1524963/R=0/*http:/hits.411web. com/cgi-bin/autoredir?camp=556&lineid=3614674¢ç=egroupweb&pos=HM <http://us.adserver.yahoo.com/l?M=259395.3614674.4902533.1261774/D=egrou pmail/S=:HM/A=1524963/rand=475568318 To unsubscribe from this group, send an email to: > Terms of Service. [Non-text portions of this message have been removed]

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It may not be available from Motorola, but production is in full swing at TEKMOS. I think they go for about $9 each in hundreds. Now if I could just find someone making the 68HC811 things would be rosy! http://www.tekmos.com/standard_products/TK68HC24.htm cheers, Nigel At 19:03 03-11-17 -0600, you wrote: >Well, realize that this may not be very helpful-depending on why you$B!G(Bre >working with the 68HC24-but my understanding is that the 68HC24 is no >longer available (at least outside Motorola for use in its emulators). >They have taken the documentation off the website, last time I looked. > >If this is for a new product, suggest you take a look at the PSD813 >series from ST. These parts provide glueless connection to the 68HC11, >provide the port replacement function, and also include flash and RAM >memory. > >Best regards, > >Kerry Berland > >Silicon Engines >2101 Oxford Road >847-803-6860 >Fax 847-803-6870 >Des Plaines, IL 60018 USA > >-----Original Message----- >From: MIKE [mailto:] >Sent: Monday, November 17, 2003 6:45 PM >To: >Subject: [m68HC11] help with the 68hc24 pru > >hello everyone im trying to connect the 68hc24 pru to a hc11e1. i >have made the follwoing connections and still cant get the pru to >interface with the hc11. > >68hc24 68hc11 >pru mode pin 43: is tied to plus 5 volts >AS pin 42: to stra/AS hc11 >reset pin 39: reset pin hc11 >r/w pin40: r/w/strb hc11 >e pin41: buffered enabled pin hc11 >pin 35 to 38: a/d multiplexed outputs pc3 to pc0 >pin 30 to 33: a/d multiplexed outputs pc7 to pc4 >a12 pin6 : hc11 a12 pin >a13 pin5: hc11 a13 pin >a14 pin 4: hc11 a14 pin >a15 pin: hc11 a15 pin >irqn pin28: tied to +5 volts thru a 100 k resistor >i/o test pin2: tied to gnd >gnd pin 29: tied to gnd >+vdd pin17: tied to +5 volts >cs pin44: hc11 a11 pin >strb pin18: r/w /strb pin hc11 >stra pin7: AS/stra hc11 > >im wondering if there is any neccessary decoding needed for the >r/w /strb pin and the as/stra pin, since these are dual function >pins from the hc11.also is there any necessary intilaization neeeded >software wise to make this interface work properly. > >Yahoo! Groups Sponsor > ><http://rd.yahoo.com/SIG=12ca627f8/M=259395.3614674.4902533.1261774/D=eg >roupweb/S=1706554205:HM/EXP=1069202791/A=1524963/R=0/*http:/hits.411web. >com/cgi-bin/autoredir?camp=556&lineid=3614674$B"g(B=egroupweb&pos=HM > ><http://us.adserver.yahoo.com/l?M=259395.3614674.4902533.1261774/D=egrou >pmail/S=:HM/A=1524963/rand=475568318 >To unsubscribe from this group, send an email to: > > >> Terms of Service. > >[Non-text portions of this message have been removed] > >To unsubscribe from this group, send an email to: Nigel W. Johnson MCSE, Mem.IEEE VE3ID / G4AJQ Web site: http://nigel.homelinux.net If you want me to have it ready yesterday, you'd better come back the day before and ask me.

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> hello everyone im trying to connect the 68hc24 pru to a hc11e1. i > have made the follwoing connections and still cant get the pru to > interface with the hc11. > > 68hc24 68hc11 > pru mode pin 43: is tied to plus 5 volts Depending on mode required, should be tied to 'HC11 Moda and Modb. Normal mode : all pulled up, Boot Mode: all pulled low. See data sheet for more details. > AS pin 42: to stra/AS hc11 > reset pin 39: reset pin hc11 > r/w pin40: r/w/strb hc11 > e pin41: buffered enabled pin hc11 should be E clk, pin 5^ > pin 35 to 38: a/d multiplexed outputs pc3 to pc0 > pin 30 to 33: a/d multiplexed outputs pc7 to pc4 > a12 pin6 : hc11 a12 pin > a13 pin5: hc11 a13 pin > a14 pin 4: hc11 a14 pin > a15 pin: hc11 a15 pin > irqn pin28: tied to +5 volts thru a 100 k resistor should be tied to HC11 /IRQ pin with more like 10K pullup^ > i/o test pin2: tied to gnd > gnd pin 29: tied to gnd > +vdd pin17: tied to +5 volts make sure it's bypassed at the chip^ > cs pin44: hc11 a11 pin > strb pin18: r/w /strb pin hc11 > stra pin7: AS/stra hc11 Not! ^ STRA and STRB are interrupt INPUTS, associated with port B and C. Should not be connected to HC11. > im wondering if there is any neccessary decoding needed for the > r/w /strb pin and the as/stra pin, since these are dual function > pins from the hc11. See note above. also is there any necessary initialization > neeeded software wise to make this interface work properly. Shouldn't be. Looks just like original PortA and PortB on 'HC11. Regards, Darrell Norquay Datalog Technology Inc. Calgary, Alberta, Canada Voice: (403) 243-2220 Fax: (403) 243-2872 Email: Web: www.datalog.ab.ca

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At 08:10 PM 17/11/03 -0500, you wrote: >It may not be available from Motorola, but production is in full swing at >TEKMOS. I think they go for about $9 each in hundreds. They were very good to me when I blew up my EVM, hc24+++ 24Vdc on the expanded MPX pins :-(( > Now if I could just find someone making the 68HC811 things would be rosy! AMEN. I did encourage Tekmos to make them too, perhaps if enough of us pester them...... Regards John Samperi ****************************************************** Ampertronics Pty. Ltd. 11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA Tel. (02) 9674-6495 Fax (02) 9674-8745 Email: Website http://ampertronics.com.au * Electronic Design * Technical Services * Contract Assembly ******************************************************

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Mike -- I suggest that you check the 68HC24 data sheet for its example schematic. You may have to go searching archives since Motorola obsoleted the 68HC24 some time ago. Also try the Moto 68HC11 area for application notes/engineering bulletins that may show other application designs/suggestions. However, given the obsolete status of the 'HC24 I would suggest that you look at other products. An excellent example is the old WaferScale Integration (WSI) Peripherial System Devices such as the the PSD913 family. These perform the port replacement function plus more and provide quantities of Flash based expansion memory plus additional RAM space. A good place to start might be the -- PSD913F2 / 68HC11 DESIGN GUIDE http://www.st.com/stonline/bin/hilite.exe?file=/stonline/books/ascii/docs/7897.htm&words=PSD Also check the ST web site http://www.st.com Best wishes, 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: "MIKE" <> To: <> Sent: Monday, November 17, 2003 7:45 PM Subject: [m68HC11] help with the 68hc24 pru > hello everyone im trying to connect the 68hc24 pru to a hc11e1. i > have made the follwoing connections and still cant get the pru to > interface with the hc11. > > 68hc24 68hc11 > pru mode pin 43: is tied to plus 5 volts > AS pin 42: to stra/AS hc11 > reset pin 39: reset pin hc11 > r/w pin40: r/w/strb hc11 > e pin41: buffered enabled pin hc11 > pin 35 to 38: a/d multiplexed outputs pc3 to pc0 > pin 30 to 33: a/d multiplexed outputs pc7 to pc4 > a12 pin6 : hc11 a12 pin > a13 pin5: hc11 a13 pin > a14 pin 4: hc11 a14 pin > a15 pin: hc11 a15 pin > irqn pin28: tied to +5 volts thru a 100 k resistor > i/o test pin2: tied to gnd > gnd pin 29: tied to gnd > +vdd pin17: tied to +5 volts > cs pin44: hc11 a11 pin > strb pin18: r/w /strb pin hc11 > stra pin7: AS/stra hc11 > > im wondering if there is any neccessary decoding needed for the > r/w /strb pin and the as/stra pin, since these are dual function > pins from the hc11.also is there any necessary intilaization neeeded > software wise to make this interface work properly. > > To unsubscribe from this group, send an email to:

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----- Original Message ----- From: "John Samperi" <> To: < > At 08:10 PM 17/11/03 -0500, you wrote: > >It may not be available from Motorola, but production is in full swing at > >TEKMOS. I think they go for about $9 each in hundreds. > > They were very good to me when I blew up my EVM, hc24+++ 24Vdc on the > expanded MPX pins :-(( > > > Now if I could just find someone making the 68HC811 things would be rosy! > > AMEN. I did encourage Tekmos to make them too, perhaps if enough of > us pester them...... Ditto! (Are we enough yet?) > John Samperi

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