Re: Programming External Flash
2003-06-04 by Dimiter Popoff
A third way which I used on a 68340 is to drive the respective lines via JTAG (assuming that the 332 has boundary scan as does the 340). Dimiter ... Dimiter
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Programming External Flash
2003-06-04 by development
I have an external FLASH (1M x 16)interfaced to MC68332 where i will be having my application program to startup at power on. This Flash is only available in
AW: [68300] Programming External Flash
2003-06-04 by FALE(Leopold Faschalek)
... there are 2 ways: either preprogram the flash in a standard programmer or program the flash via the bdm interface (hard & software from
BD interrupt
2003-05-30 by rfowler
greetings on a 68360: is it possible to generate an interrupt immediately a SCC has completed transmission of one BD and is about to begin transmission of the
RE: [68300] P&E BDM wiggler
2003-05-29 by Melear Charles-rdph40
Frank, You can indeed use the PE wiggler to write a serial number to an OFF BOARD EEPROM. (Just for you info, the wiggler is not good for programming the
Re: [68300] P&E BDM wiggler
2003-05-29 by Scott Newell
... I haven t tried it, but I don t see any reason you couldn t use the wiggler to bit-bang spi comm to the eeprom. It d be pretty slow, but if you don t have
Re: [68300] P&E BDM wiggler
2003-05-29 by Frank Prince
Good Morning, I have a question about this topic of P&E wiggler used with 68332 QSPI. P&E does a nice job with supporting programming of Flash via the BDM
RE: [68300] P&E BDM wiggler
2003-05-28 by Melear Charles-rdph40
Hello everyone, The old PE software bit banged the signals on the parallel port. Thus, the effective bit times become a function of the system clock of
Re: [68300] P&E BDM wiggler
2003-05-28 by Martin McGrath
Hi, Have you tried asking P&E Micorsystems directly? They have a web site at: http://www.pemicro.com/ or P&E Microsystems Phone: 617-353-9206 and I have
RE: [68300] P&E BDM wiggler
2003-05-28 by Batke, Keith
I added two PCI parallel ports to a desktop last December. I couldn t get them to work and when I finally asked P&E for help... They sent me a (FREE) updated
P&E BDM wiggler
2003-05-28 by john_gma
Has anyone had problems getting a P&E BDM wiggler (parallel port) to work on a laptop computer using a parallel port adapter? New laptops these days don t have
MEVB1632 For Sale
2003-05-22 by chris_c_willis
I am selling an Eval Board for the 683xx and 68hc16 platform processors. This unit was purchased YEARS ago, and was never used. I think that we paid $1200
MEVB1632 For Sale
2003-05-22 by chris_c_willis
I am selling an Eval Board for the 683xx and 68hc16 platform processors. This unit was purchased YEARS ago, and was never used. I think that we paid $1200
RE: [68300] PLL not locking/ erratic xtal behavior
2003-05-21 by Kuo, Chauncey
We have found in one of our applications (avionics), humidity testing results in water permeating the urethane conformal coating, creating enough conductivity
Re: [68300] PLL not locking/ erratic xtal behavior
2003-05-21 by Mark Wyman
Same problem on a RTC part a while ago. It seems the environmentally safe flux is worse than most in this area, and being biological in nature it attracts
RE: [68300] PLL not locking/ erratic xtal behavior
2003-05-21 by Robert Yablonski
I have had a bitch of a problem with the watch crystal. Besides the dirty board problem, the crystal is sensitive to heating and cooling. It shifts frequency
RE: [68300] PLL not locking/ erratic xtal behavior
2003-05-21 by Scott Newell
... I had a very similar problem--one turnkey board assembly house would send us boards, and we had a heck of a time with oscillator startup. Probably 10%
RE: [68300] PLL not locking/ erratic xtal behavior
2003-05-21 by Melear Charles-rdph40
Hello everyone, I just want to add a little to this thread. Apparently the customer s problem was caused by solder flux left on the board. Flux is somewhat
RE: [68300] PLL not locking/ erratic xtal behavior
2003-05-21 by development
Hi Charles, Thanks a lot for your detailed reply. I am extremely sorry for taking time to reply back. The country code is 91 and probably you have to dial 0 as
68331 output driver types
2003-05-21 by FALE(Leopold Faschalek)
Hi, in the Motorola 68331 user manual is in the mcu pin characteristics table for some pins the type Bo . For example MISO, MOSI, SCK and TxD. The description
s19 to c array of chars
2003-05-18 by johnmerm
Does anyone have any tool to convert an s19 binary to an array of chars in C? I have heavy need for it.
QSPI to I2C interface in slave mode
2003-05-12 by Keith.Wilson@softron.de
Hi all, does anybody know of any application notes onusing the CPU32 s QSPI as a I2C, in slave mode? It is possible to configure the QSPI (in slave mode) to
RE: [68300] PLL not locking/ erratic xtal behavior
2003-05-08 by Melear Charles-rdph40
Prashant, I tried to call you today (8:30 am in Austin, Texas, USA). I don t think I dialed the number right. Do I need a country code or is 91 the country
stepper motor control
2003-05-08 by PAC Software
Hi All, We wish to use the TPU / MC68376 to control 4 independent stepper motors. We intend to use the Allegro A3977 to do the actual driving of the motors.
PLL not locking/ erratic xtal behavior
2003-05-08 by development
Hi All, I am facing a very peculiar problem. I am working on 68332 with a 32.768 kHz xtal. The design was working fine in all the boards previously, but lately
Re: GPT and CPR bits
2003-04-30 by Aaron J. Grier
... I was able to get the bootloader modified so it and the main software agree on the CPR bits, so no more conflicts. :) ... the PWM counter and PPR bits?
RE: [68300] GPT and CPR bits
2003-04-30 by Melear Charles-rdph40
Aaron, The bottom line is that you are going to have to rewrite your code. The only way to get the part to FREEZE is get into the BDM mode. Well, once the
GPT and CPR bits
2003-04-29 by Aaron J. Grier
hi Charlie and gang... I have a 68331 target and am in a quandary. I d like to be able to re-set the CPR bits of the GPT a second time. section 7.7 of the
IRQ function
2003-04-21 by wflsa
however, I think this is a design fault about it have not triggered interrupt mode register in MC683xx, because it is not easy to call ISR. but is have a
RE: [68300] Can I user the Interrupt of MC68376
2003-04-11 by Keller, Bob
Shaoan, For many years I have used a 14490 debounce circuit made by ON Semi. There are other parts available now. I did a quick search on Maxim for bounce
RE: [68300] Can I user the Interrupt of MC68376
2003-04-11 by Melear Charles-rdph40
Shoan, Are you on line right now? If so, send me a private email with your phone number. If you are not in the United States, make sure to include the
RE: [68300] Can I user the Interrupt of MC68376
2003-04-11 by Melear Charles-rdph40
Shaoan, I assume that you are using the General Purpose Timer module and you are setting up the Timer channel to do edge detection. This is what you should do.
RE: [68300] Can I user the Interrupt of MC68376
2003-04-11 by shaoan li
Thanks! Mr. steve: I think it is a solve for my problem. but I think it isn t best solve. Now, I use a timer interrupt read to the port E of MCU and call same
RE: [68300] Can I user the Interrupt of MC68376
2003-04-11 by Steve Russell
Shaoan, What I was trying to explain was: If you use an interrupt, you need to add the de-bounce circuit and getting the software to work is more complicated.
RE: [68300] Can I user the Interrupt of MC68376
2003-04-11 by shaoan li
Hello,Sir: Thamk you for your help, I think so. but I need use a mechanical switch control to MCU and iI have append a debounce circuit in my ECU.tell me how
RE: [68300] Can I user the Interrupt of MC68376
2003-04-11 by Steve Russell
Shaoan, If you are using a mechanical switch or relay to generate the interrupt, you will likely get many interrupts per switch operation due to contact
RE: [68300] Can I user the Interrupt of MC68376
2003-04-11 by shaoan li
Hello,Mr. Charlie: this is a controller for car, I have programming same interrupt service program in my code and I believe any interrupt request have been a
Re: 68332-SDRAM interface
2003-04-10 by Stefan Wimmer
... ...if you are not in absolute need of the TPU (assuming this is what brought you to the 332 in the first place), you should have a look at a different
RE: [68300] Using addresslines during I/O port access
2003-04-09 by Melear Charles-rdph40
The address lines are active during all accesses as well as Read/write. What is NOT active is the data bus during internal reads and writes. Port E contains
Using addresslines during I/O port access
2003-04-09 by howto68332
In the 68332 are either the address lines or the R/notW line active during access to the internal PortE data register when it is configured as an I/O port? (
Re: [68300] Re: 68332-SDRAM interface
2003-04-08 by shyam mali
Jeff, I got the message, synchronus ram is not the solution for the 332, i will try some other data storage flash disk etc. In my case the power is not of much
Re: [68300] Re: 68332-SDRAM interface
2003-04-08 by jeffrey.tenney@gm.com
Shyam, Yes, it looks pretty complex. The solution appears to include a big CPLD, the level conversion buffers, and the SDRAM clock. Apparently the CPLD does
[68300] Re: 68332-SDRAM interface
2003-04-08 by Andrei Chichak
... Outside of the embedded systems world, I don t think that people would consider the 332 able to address large chunks of memory . By using SRAM and the
[68300] Re: 68332-SDRAM interface
2003-04-08 by Steve Russell
Shyam, The 68360 is listed as a production part and has a DRAM interface. It also has a full 32-bit address, if you find that a mere 24 bits cramps your
Re: 68332-SDRAM interface
2003-04-08 by shyam_mali
Hi Jeff, Can you comment on this design, I happened to see this site after i read your message. http://www.users.qwest.net/~kmaxon/page/cont/cont47.htm . The
Re: [68300] Re: 68332-SDRAM interface
2003-04-08 by jeffrey.tenney@gm.com
Shyam, I don t think you ll get many responses on using SDRAM with a 68xxx. These processors have asynchronous external buses. The conversion hardware and
Re: 68332-SDRAM interface
2003-04-08 by shyam_mali
Charles, Yes, I am looking for advise on the feasibility and information of interfacing the DIMM modules used in the PC. Kindly advise. Shyam ... used in PC s
RE: [68300] 68332-SDRAM interface
2003-04-08 by Melear Charles-rdph40
Shyam, Do you mean that you want to put Synchronous DRAM, like the kind used in PC s and stuff? The MC68332 was not particularly designed to deal with DRAM.
68332-SDRAM interface
2003-04-08 by shyam_mali
Hi Charles, Robert Thanks for the assurance, i am keen on starting this project. To start with the 332, i feel that it might be very helpful to have an
RE: [68300] 68332 SDRAM interface
2003-04-07 by Melear Charles-rdph40
Shyam, The MC68332 is a good part to use. What you might want to do is get with a distributor and get a particular part number and then get the distributor to