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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Data on Integrated Circuit
Tonights challenge :-). I have acquired a small number of TTD6108-2
IC's made by MX, now part of CML Microsystems. These were being used as interface ic's between a PIC and a small motor. However I'm unable to find any information on them at all, and CML have not responded to e-mails. Can anyone please help with some data on these devices as they could be very useful for a project I have at the moment. -- Peter Parry www.remapsherts.org.uk |
#2
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Data on Integrated Circuit
On Mon, 05 Dec 2005 23:21:01 +0000, Peter Parry
wrote: Tonights challenge :-). I have acquired a small number of TTD6108-2 IC's made by MX, now part of CML Microsystems. These were being used as interface ic's between a PIC and a small motor. However I'm unable to find any information on them at all, and CML have not responded to e-mails. Can anyone please help with some data on these devices as they could be very useful for a project I have at the moment. What type of motor? -- |
#3
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Data on Integrated Circuit
In article ,
Peter Parry wrote: Tonights challenge :-). I have acquired a small number of TTD6108-2 IC's made by MX, now part of CML Microsystems. These were being used as interface ic's between a PIC and a small motor. However I'm unable to find any information on them at all, and CML have not responded to e-mails. Can anyone please help with some data on these devices as they could be very useful for a project I have at the moment. http://www.bgs.nu/sdw/ Looks promising, but doesn't work on my browser. It does link MX to the CML site but couldn't find any data sheets there. -- *If you must choose between two evils, pick the one you've never tried before Dave Plowman London SW To e-mail, change noise into sound. |
#4
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Data on Integrated Circuit
On Mon, 05 Dec 2005 23:22:11 +0000, Matt
wrote: What type of motor? Small low voltage permanent magnet. 6VDC operating. -- Peter Parry. http://www.wpp.ltd.uk/ |
#5
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Data on Integrated Circuit
In article , Peter Parry
writes Tonights challenge :-). I have acquired a small number of TTD6108-2 IC's made by MX, now part of CML Microsystems. These were being used as interface ic's between a PIC and a small motor. However I'm unable to find any information on them at all, and CML have not responded to e-mails. CML are a bit odd like that. Try ringing them Google comes up with zilch. -- Mr X |
#6
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Data on Integrated Circuit
Peter Parry wrote:
Tonights challenge :-). I have acquired a small number of TTD6108-2 IC's made by MX, now part of CML Microsystems. These were being used as interface ic's between a PIC and a small motor. However I'm unable to find any information on them at all, and CML have not responded to e-mails. Can anyone please help with some data on these devices as they could be very useful for a project I have at the moment. sci.electronics.components NT |
#7
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Data on Integrated Circuit
On 6 Dec 2005 06:51:45 -0800, wrote:
sci.electronics.components Tried that, no responses yet. -- Peter Parry. http://www.wpp.ltd.uk/ |
#8
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Data on Integrated Circuit
On 6 Dec 2005 03:58:08 -0600, Mr X wrote:
CML are a bit odd like that. Try ringing them Did that - said if I e-mailed they would see what they could do - which so far appears to be nothing whatsoever! -- Peter Parry. http://www.wpp.ltd.uk/ |
#9
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Data on Integrated Circuit
Try a post on comp.robotics.misc. Lot of pic people on there.
HTH Dave |
#10
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Data on Integrated Circuit
On Tue, 06 Dec 2005 08:09:50 +0000, Peter Parry
wrote: On Mon, 05 Dec 2005 23:22:11 +0000, Matt wrote: What type of motor? Small low voltage permanent magnet. 6VDC operating. How many pins on the IC? Are you sure that you have interpreted the markings correctly? Any idea on what the actual internal functionality is, could it be a serial interface D to A? -- |
#11
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Data on Integrated Circuit
In article , Peter Parry
writes Tonights challenge :-). I have acquired a small number of TTD6108-2 IC's made by MX, now part of CML Microsystems. www.xs4all.nl/~ganswijk/chipdir/ suggests this may be an analogue multiplexer, which sounds unlikely given the usage you describe, but the site might be worth a look. |
#12
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Data on Integrated Circuit
On Tue, 06 Dec 2005 22:30:15 +0000, Matt
wrote: On Tue, 06 Dec 2005 08:09:50 +0000, Peter Parry wrote: On Mon, 05 Dec 2005 23:22:11 +0000, Matt wrote: What type of motor? Small low voltage permanent magnet. 6VDC operating. How many pins on the IC? Are you sure that you have interpreted the markings correctly? Any idea on what the actual internal functionality is, could it be a serial interface D to A? -- Peter Parry. http://www.wpp.ltd.uk/ |
#13
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Data on Integrated Circuit
On Wed, 07 Dec 2005 09:51:04 +0000, Peter Parry
wrote: On Tue, 06 Dec 2005 22:30:15 +0000, Matt wrote: On Tue, 06 Dec 2005 08:09:50 +0000, Peter Parry wrote: On Mon, 05 Dec 2005 23:22:11 +0000, Matt wrote: What type of motor? Small low voltage permanent magnet. 6VDC operating. How many pins on the IC? Are you sure that you have interpreted the markings correctly? Any idea on what the actual internal functionality is, could it be a serial interface D to A? Is that a don't know? :-) -- |
#14
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Data on Integrated Circuit
On Tue, 06 Dec 2005 22:30:15 +0000, Matt
wrote: On Tue, 06 Dec 2005 08:09:50 +0000, Peter Parry wrote: Sorry about the blank reply, must get a less keyboard enabled cat. Small low voltage permanent magnet. 6VDC operating. How many pins on the IC? 8 Pin DIL. Are you sure that you have interpreted the markings correctly? Yes (they are actually very clear for once!) - there are a few listed for sale on brokers web sites but no data sheets. The full markings are :- MX J2D4JA TTD6108-2 Any idea on what the actual internal functionality is, could it be a serial interface D to A? As far as I have worked out so far (and this may not be correct as the tracks on the PCB's I have are difficult to trace) is that PA0 and PA1 on the microcontroller (A Holtek HT48R05A one time programmable) go to pins 1 and 8 on the TTD6108. Of the other TTD6108 pins 3 and 6 go to the motor. Pins 4 and 5 are -ve and pins 2 and 7 are +ve. I'd guess 4&5 and 2&7 are also used for simple heatsinking looking at the PCB layout. As yet I haven't been able to power the boards I've got to do any measurements on them but I have a project for REMAP (see url in sig) which they could be useful for if I can find something out about them! -- Peter Parry www.remapsherts.org.uk |
#15
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Data on Integrated Circuit
In article ,
Peter Parry wrote: As far as I have worked out so far (and this may not be correct as the tracks on the PCB's I have are difficult to trace) is that PA0 and PA1 on the microcontroller (A Holtek HT48R05A one time programmable) go to pins 1 and 8 on the TTD6108. Of the other TTD6108 pins 3 and 6 go to the motor. Pins 4 and 5 are -ve and pins 2 and 7 are +ve. I'd guess 4&5 and 2&7 are also used for simple heatsinking looking at the PCB layout. I've seen a similar 8-pin motor driver chip... somewhere. Pins 1 and 8 inputs are Direction command, plus the variable pulse-width clock from the uP. Pins could be either way round. Pins 3 and 6 are the outputs from an H-bridge, diagonal pairs chosen by DIR, clocked by the PWM input. There might also be 4x (Schottky?) diodes on 3 and 6 to clamp the back emf from the motor's inductance. If it is an 8-pin DIP package, reckon on a running motor current of no more than about 100mA. With such a simple driver chip, smoothly controlling a motor can require considerable software in the PIC. See Microchip App Note DS00532B "Servo Control of a DC Brush Motor". -- Tony Williams. |
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