ISP for 9S12DP256 HCS12

Started by tech_e_micro in 68HC1213 years ago 5 replies

I have been using an old Atmel 8535 chip - ABC miniBoard for a while now and I thought it might be time to move up. I am looking...

I have been using an old Atmel 8535 chip - ABC miniBoard for a while now and I thought it might be time to move up. I am looking into developing systems with HCS12 and would like to be able to program a 9S12DP256 via RS232 comms or parallel port from the PC without the need for p


Banked memory with a 9S12DP256

Started by ssinfod in 68HC1212 years ago 3 replies

Hi, I am using CodeWarrior 3.1 and also use the banked memory model on a 9S12DP256. I would like to know if it is mandatory to...

Hi, I am using CodeWarrior 3.1 and also use the banked memory model on a 9S12DP256. I would like to know if it is mandatory to allocate at least one segment in a NON-Banked location. Right now, my prm looks like this : - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - NAMES END SEGMENTS


Re: 9S12DP256 EVB schematic

Started by sree...@... in 68HC1211 years ago 2 replies

> > > > Has anyone else who recently received or is using the 9S12DP256 EVB had trouble finding a schematic in any of the documentation....

> > > > Has anyone else who recently received or is using the 9S12DP256 EVB had trouble finding a schematic in any of the documentation. Maybe I'm just being thick. > >Jonathan Masters > > > > > > > > > > Helo, You can find the Schematic at the following link


9S12DP256

Started by Shachar in 68HC1214 years ago 4 replies

Being in a minority (I think...) of programing in assembly and no C, I'm having problems finding the basical program for the...

Being in a minority (I think...) of programing in assembly and no C, I'm having problems finding the basical program for the 9S12DP256 in assebly. I moved from the D60 (which had an assembly program at the start with some equates and initializations), which also programmed in assembl


9s12dp256 I2c 400Kbit/s

Started by sabinbsabinb in 68HC1213 years ago 1 reply

Hi some one try to run iic on 9s12dp256 at 400Kbit/s? what is the iic frequency divider register(IBFD) value for that if cpu...

Hi some one try to run iic on 9s12dp256 at 400Kbit/s? what is the iic frequency divider register(IBFD) value for that if cpu running 24Mhz Thanks


I2C interface for 9S12DP256

Started by Anonymous in 68HC1213 years ago

Hello ! I'm trying to start I2C bus on 9S12DP256, with ImageCraft Compiler ICC12, P&E BDM, NoIce debugger, quartz 12 Mhz. ...

Hello ! I'm trying to start I2C bus on 9S12DP256, with ImageCraft Compiler ICC12, P&E BDM, NoIce debugger, quartz 12 Mhz. Now without any success. -:((( I analysed the soft provided in Application Note AN2318, Which run under interruptions.


Trouble With Crystal Clock Generation on 9S12DP256

Started by rmk1113 in 68HC1214 years ago 8 replies

Hi All, I'm in the process of designing an MCU board using a 9S12DP256. I want to use a crystal and generate the clock...

Hi All, I'm in the process of designing an MCU board using a 9S12DP256. I want to use a crystal and generate the clock internally. I have used to recommended values (from Motorola) to set up the PLL filter on the XFC pin, but I currently have an interesting problem:


9S12DP256 pcb layout

Started by ra in 68HC1214 years ago

Hello, I am trying to build a small prototype circuit board around the 9S12DP256 and was wondering if anyone has drawn the...

Hello, I am trying to build a small prototype circuit board around the 9S12DP256 and was wondering if anyone has drawn the basic circuit of just the cpu (112 LQFP) and the oscillator components according to the recommended layout suggested by Motorola into a pcb layout prog


9S12DP256 EVB Debugging Ideas - Comments Desired

Started by Eric Engler in 68HC1211 years ago 7 replies

Many people have 9S12DP256 based EVBs, and they use d-bug12 for debugging. This is especially popular with students and hobbiests, and they...

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 mode because they may only have one board and they want to avoid the cost of a new one. So they use a terminal window to do their debugging with one EVB board connected to the PC serial port, whether it's done with As...


Re: 9S12DP256 oscillator circuit

Started by Doron Fael in 68HC1214 years ago 1 reply

Robert, Please note the 9S12DP256 does not support the Pierce crystal configuration. It only supports the Colpitts crystal...

Robert, Please note the 9S12DP256 does not support the Pierce crystal configuration. It only supports the Colpitts crystal configuration or an external 2.5V square-wave clock generator. (Pierce crystal is more robust, Colpitts is less robust but consumes less power).


ICC12's Hello world does not work on my 9s12dp256

Started by zhao47803 in 68HC1214 years ago 3 replies

Hi, I need your help! I cannot have the "Hello World" example that comes with ICC12 work for my 9s12dp256 board. I...

Hi, I need your help! I cannot have the "Hello World" example that comes with ICC12 work for my 9s12dp256 board. I tried to include "hcs12dp256.h" in my project instead of "hc12.h". But the program still does not work.


can someone verify PM1 function (9S12DP256)?

Started by ctrobot28 in 68HC1214 years ago 3 replies

Anyone willing to try this on their 9S12DP256 running dbug12, assuming you don't have anything connected to Port M pin 1 (PM1)? ...

Anyone willing to try this on their 9S12DP256 running dbug12, assuming you don't have anything connected to Port M pin 1 (PM1)? Under dbug12, after reset, set DDRM (address 0x0252) to 0x02, set PTM (0x250) to 0x02, then display the value of PTIM (0x0251). One mine PTIM rea


9S12DP256 interfaced with CMPS03?

Started by chiefwigms in 68HC1214 years ago

Has anyone interfaced the 9S12DP256 with the Devantec CMPS03?? http://www.robot-electronics.co.uk/ htm/cmps3doc.shtml I...

Has anyone interfaced the 9S12DP256 with the Devantec CMPS03?? http://www.robot-electronics.co.uk/ htm/cmps3doc.shtml I followed the init routines (as zeta_alpha2002 said), but I'm getting garbage output...


9S12DP256 CAN Initialization

Started by bdcps2002 in 68HC1215 years ago 8 replies

Hi everybody, I am using MC9S12DP256 on TechnologicalArts board, which has 2 CAN ports. Even though CAN works in Loopback mode, I...

Hi everybody, I am using MC9S12DP256 on TechnologicalArts board, which has 2 CAN ports. Even though CAN works in Loopback mode, I couldn't get them to talk to each other. When initializing, do I have to do anything other than: // Enable MSCAN module.???? Anything else


bootloader for 9s12dp256

Started by Joe McCarron in 68HC1213 years ago 4 replies

Does the bootloader come already loaded in flash when you purchase the chip or do you have to load it ? Thanks Joe McCarron ...

Does the bootloader come already loaded in flash when you purchase the chip or do you have to load it ? Thanks Joe McCarron


Motorola Academic Support in Australia

Started by podonoghue2 in 68HC1214 years ago 2 replies

This may not be the appropriate forum but I suspect someone here might be able to help. We have previously used HC11s in our...

This may not be the appropriate forum but I suspect someone here might be able to help. We have previously used HC11s in our undergraduate program and this semester decided to update to HCS12 (9S12DP256). When looking around at what boards were available we found the prices se


Programming an HC12 with OSEK

Started by teleko7 in 68HC1214 years ago 2 replies

Hi everybody. Is there any good book or pdf or something for developing software in OSEK for a 9S12DP256? T.I.A Iban...

Hi everybody. Is there any good book or pdf or something for developing software in OSEK for a 9S12DP256? T.I.A Iban Barrutia


Identifying Interrupts

Started by Shayne C. Rich in 68HC1213 years ago 3 replies

I have an operating system running on a 9S12DP256. I seem to be getting spurious interrupts. I have directed all interrupts that I...

I have an operating system running on a 9S12DP256. I seem to be getting spurious interrupts. I have directed all interrupts that I am not using for my application to a sort of trap ISR. I was wondering though, is there a way to tell which interrupt fired without writing a different I


Example codewarrior and cml-9s12dp256

Started by Pascal DEREX in 68HC1213 years ago 3 replies

Hello, I would like to know if someone have some project examples for cml-9512dp256 with codewarrior. I am a beginner with...

Hello, I would like to know if someone have some project examples for cml-9512dp256 with codewarrior. I am a beginner with hcs12. Thank you very much Regards P.S. you can send me examples in my personal mailbox


Programming EEPROM

Started by xjmikab in 68HC1215 years ago

We would like to know if anyone can help us with the c-code for programing the EEPROM of a 9S12DP256 device. I'm using IAR...

We would like to know if anyone can help us with the c-code for programing the EEPROM of a 9S12DP256 device. I'm using IAR ICC6812 compiler. The oscillator cristal frekvens is 16 MHz. Thanks in advance.. Peter and Martin Below is my function for programming that