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68HC12
Join our technical discussions about Freescale Microcontrollers: M68HC12. (Freescale Semiconductor is a Subsidiary of Motorola).
Search Results for "pll"
Re: Request for help with clock-cycle calculation [3 Articles]
Edward Karpicz - Jul 31 2008
"jambotronic" wrote:
> I am a newcomer to the board and I would like to ask for some
> assistance on the following:
>
> I have a 16 MHz Elektronikladen 68HC12 Compact coll... 
Re: Booting from Flash m9s12dg256 [3 Articles]
sburgin13 - Apr 24 2008
--- In 6...@yahoogroups.com, "Eric Engler" wrote:
>
> --- In 6...@yahoogroups.com, "sburgin13" wrote:
>
> > Here's my problem: I compile a program and look at th... Instruction trace buffer [5 Articles]
Robert Milne - Apr 23 2008
I have an unexplained intermittant reset that is defying my crude
debugging methods (sci print statements and pod breakpoints) and I
need a more sophisticated tool to trace the s... pulse accumulator
xreemiex - Mar 10 2008
i want to use the pulse accumulator such that it generate an interrept
after it counts 128 rising edges.
My code seems to never generate an interrupt. I am using codewarrior
as... Re: Re: How to measure 50Hz DC voltage with ATD [6 Articles]
Edward Karpicz - Mar 5 2008
Normally you choose A/D prescaler so that you don't violate A/D specs for
min and max A/D clock frequency.
Suppose you are using PLL and get 25MHz bus clock. You have to divid... RE: Novice help wiring HCS12 to program
jpdi - Feb 27 2008
Hello, Chris,
A couple of years ago, I moved from Intel 8051 (40 pins DIL package) to
Freescale HC12 (CMS 112 pins).
I was afraid about to start with a new and more powerful C... Reg: Default Memory map for MC9S12XDP512 mcu [3 Articles]
yadunandan kasu - Jan 29 2008
Hi everyone,
I am working on MC9S12XDP512 mcu using HCS12X starter kit, I am not
very good at MCU knowledge right now.
During my work, I got stuck in the Memory map concep... Re: HCS12D PLL Woes [3 Articles]
robm...@web.net - Jan 17 2008
This isn't going to help but as an aside I've never been able to debug
with the pll in operation. If I need to do source level debugging
(techarts bdm with noice12) I compile wi... Re: Bad flash? [7 Articles]
dleatmot - Oct 24 2007
--- In 6...@yahoogroups.com, Donald E Haselwood
wrote:
>
> Does the following indicate the flash is bad (or is it something
else)?
>
> Part: MC9S12E128CPV Mask 2L15... Re: PE Micro Cable12 vs. PLL [2 Articles]
Jeff Smith - Sep 11 2007
--- In 6...@yahoogroups.com, "John Hartman (NoICE)" wrote:
> Having been handed the opportunity on a silver platter, I COULD
> suggest that you try NoICE :)
[...]
I mis... Re: S12D/E pad layout [2 Articles]
dleatmot - Jul 19 2007
Hi James,
That layout in the datasheet is a "best practice" layout. Trying
to make the best of all worlds (ATD, Crystal, PLL, etc.)and fit it
all onto a single layer. I ag... Hai
Srinivas Parasaram - Mar 31 2007
Hai friends,
I am using MC9S12E128 controller with CodeWarrior V4.5,
Cyclone pro debugger and powered with 3.3V . Configuration used is
16Mhz bus frequncy with P... Oscillator from s12dp256 to s12Xdp512
jpdi...@free.fr - Mar 21 2007
Hye
I'm trying to go from 9s12dp256 CPU to 9s12Xdp512, with the same printed board.
I'm able to download and debug program (ICC12 ImageCraft V 7 compiler and NoIce debugger)... DJ64 eeprom programming in low temperature [7 Articles]
jo_wan_soo - Nov 23 2006
We are using HCS12 micro ( MCS12DJ64 CPV 2L86D mask set) in our
automotive CAN application . Recently, we have discovered some
problem with eeprom programming in low temper... Re: Re: SCI receive RDRF flag not coming on for some reason
Andrei Chichak - Nov 22 2006
At 01:12 PM 11/22/2006, you wrote:
> > To get around the problem I transmitted a character and then
> > everything started working.
> This turned
> out to be because ther... Re: Flash sector erase on S12DP256B [5 Articles]
Steve Russell - Oct 26 2006
Adrian,
Some notes on further straws below.
My reading of all this is that the units did not fail in the middle of
operation, but failed only on power up.
Is this correc... P&E Multilink [3 Articles]
Adrian Vos - Oct 25 2006
Hi All,
Related to my previous query when I was trying to work out what was going
on. The S12DP256B project I am working on has a 4MHz crystal, and uses the
PLL to put the b... Re: Re: bootstraploader [5 Articles]
Edward Karpicz - Oct 23 2006
Andrew Lohmann wrote:
[]
> First questions are then is:-
>
> 1) Can I comment out lines with "OFFSET 0" ?
OFFSET is important. Offset resets asm program counter to zero. ... RE: Burning into the eeprom
jpdi...@free.fr - Oct 10 2006
Hello Christian !
Below what I use to develop for 9s12=A0:
- icc12 compiler
- NoIce debugger, which can burn program into 9s12
- BDM multilink either on parallel port, either... 9S12DP256 EVB Debugging Ideas - Comments Desired [2 Articles]
Eric Engler - Aug 9 2006
Many people have 9S12DP256 based EVBs, and they use d-bug12 for
debugging. This is especially popular with students and hobbiests, and
they normally don't use d-bug12 in the pod ... Re: run-time programming of EEPROM in DP256 [2 Articles]
danielkolodka2002 - Jun 29 2006
Gracias Agustin. Te comento, estamos con la aplicaci=F3n desarrollada=20
con el ICC 12(image craft compiler), de todos modos vamos a seguir la=20
rutina que nos enviaste hecha pa... Re: serial port error & crystal freq measurement method for a 9s12dg128 [2 Articles]
blewis999 - Jun 2 2006
Andrew Lohmann wrote:
> I have no problem probing either pins on the pierce oscillator=20
> configured crystal with 10M ohm oscilloscope probe. If it does not=20
> oscillate ... Flash MC9S12E via Serial Monitor Problem [3 Articles]
ymliao - May 19 2006
Hi,
I have been trying struggling for a week to flash micro via serial
monitor without success. I really appreciate if anyone could give me
some pointers.
I've tried to u... Re: Help in streamlining my xgate code [3 Articles]
Edward Karpicz - May 17 2006
George ("aerowesty2000") wrote:
> Thank you Steve and Doron for the great suggestions. Steve, just
> placing the function code into the isr netted 1.94 Mhz and combining
>... Help in streamling my Xgate code. [3 Articles]
aerowesty2000 - May 15 2006
Hello S12X/Xgate people,
I'm building a data simulator where I need to send out a continuous
data stream. To get flexibility with the clock rate, I used the PIT
timer. In ... Re: Re: COP Reset
Edward Karpicz - Apr 24 2006
> Is there any other way of inducing a COP reset apart from writing
> values other than $55 and $AA in the COP register or letting the COP
> watchdog timer get expired?
Val... Re: Re: Serial Communication
MK - Apr 20 2006
Hey guyz,
here's a small program that i wrote using the Minidragon+ MC9S12DP256B
board. it basically just sends and receives a serial character internally a=
t
a baud rate of 4... Re: Help with True Time simulator [2 Articles]
Eric Engler - Apr 16 2006
--- In 6...@yahoogroups.com, "Keith Gilman" wrote:
I'm not a Codewarrior user, but I understand what's happening here.
The startup code is device-specific and it does a coup... Re: Certain registers not being initialized...
zeta_alpha2002 - Apr 12 2006
--- In 6...@yahoogroups.com, "Ashwin" wrote:
>
> Here is a snippet of my CAN initialization code.
Here is mine, see if makes yours work.
RXFRM equ %10000000 ;Receive... HCS12X PLL [3 Articles]
Michael Burgess - Apr 7 2006
I am using a DEMO9S12XDT512 Eval Board. This board is equipped with a
4.000MHz. crystal. I'm trying
to reconfigure the processor to use the internal PLL and bump up the
frequ... Re: Help with M68EVB912DP256
Robert Milne - Mar 23 2006
for (i =0;i<10;i++);
is only about .4 microseconds if you are running your pll at the
standard 24MHz. It's impossible to see such a short burst. Better to
use a scope.
Th... Re: New 9s12c32
Eric Engler - Mar 22 2006
I use "fload ;b" to download a .s19 file, then "reset" to
clear any left-over values in sensitive registers, then "go 4000" to
run the program (assuming the program lives at $4... RE: Delay function and more
- Mar 17 2006
Well...
I developped some C routines for delay.
For your information, an empty function :
void DelayMini (void)
{
}
takes about 2.5 micro-seconds, with 12 Mhz quartz (measure... Re: DEMO9S12NE64 restoring serial monitor [2 Articles]
Michal Konieczny - Feb 9 2006
>>I downloaded an app note (AN2548) and project file containing the
>>serial monitor code from freescale website, it doesnt seem to work.
>>Perhaps the boot/run button is not ... Newbie: Question about NE64 - Ethernet recovery
castillo444 - Feb 7 2006
Hi Everyone
I am developing a web application for a class and I am using the NE64
chip since it has Ethernet capabilities.
In order to conserve power I place the NE64 into lo... Re: PLL - how to tie signals if not used [4 Articles]
Doron Fael - Feb 5 2006
Robert,
The official Freescale recommendation is to connect the Xfc pin to VDDPLL
if the internal PLL is not used.
Hope this helps,
Doron
Nohau
HC12 In-Circuit Emulators
www.... Re: synchronization of 2 micros operating at different frequencies
Steve Russell - Jan 27 2006
What is the source of system clock for the MCU's?
If they are crystal, their speeds may be different, but they will be very
stable.
Even if they are ceramic resonators, the s... Re: CAN register setup [3 Articles]
garyolmstead - Jan 19 2006
>
> Typo, should be 500kbps. That's max possible rate for this clock.
>
You're right; sloppy proofreading...
> > to set it to 9 (for divide by 10).
>
> No. Pre...