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Questions tagged [freescale]

Freescale Semiconductor is a company that produces and designs embedded hardware.

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18 views

Freescale HCS08 PWM

I am using freescale HCS08sg8 Micro controller. here am set a fixed period and different duty cycle. My problem is first pulse width is higher then the other pulse width. am using code worrier V6.3 ...
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2answers
144 views

How to read this Microcontroller table? [closed]

I am a beginner in Microcontroller electronics. MPC5606S MCU Datasheet I want to understand how to read the table 8 - Port Pin Summary. Can you please explain clearly the each word present in the ...
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0answers
167 views

BDM (Background Debug Mode) with Arduino

I'm trying to talk to a 68HC(9)12D60 (Motorola/Freescale/NXP) via BDM protocol. This chip is a 112-pin TQFP. On the PCB, there is a 6-pin header (which is not the standard BDM 2*3 pins header). The 6 ...
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1answer
587 views

i2c read error but probe succeeds

Can you please tell me a scenario where i2c probe gives the slave address but i2c read command fails..
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2answers
351 views

I2C Communication Signal Issue

hello to all, I'm working on I2C Based Communication Device bq27742-g1(Texas Instrument) Battery fuel gauge which is Slave Device address is 0xAA. I have put in the 10K pull up resistor. In this I'...
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1answer
85 views

How much embedded program memory in this NXP (aka freescale) KL03 processor?

Is there a way to find out how much programming memory is in an NXP (aka freescale) KL03 ARM processor? The markings on the chip say "P03T5V" and "PSABA". There is this NXP package number lookup web ...
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2answers
496 views

Interrupt Vector calculation in PowerPC based controllers

I am working with Freescale MPC5534 based on PowerPC arch. I am not able to understand how the address of a particular ISR is calculated during runtime. There are three registers involved, INTC_IACKR, ...
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1answer
207 views

Programmer /Debugger for freescale kinetis series [closed]

I want to use frescale MK10 Device for my Project, the Cost of Programmer debugger is very high , so i Want to ask is there any low cost P/D ot any hack available with any system so that i can use ...
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1answer
397 views

MC68000 Modern Equivalent (or can/should I use NRND/EOL chips)

I am designing a SBC that will feature the Motorola 68000 (or one of its descendants) but am having trouble finding new chips. The only chips that I have been able to find on Mouser or Digi-Key are ...
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0answers
195 views

Is “transient detection” exclusive to Freescale?

I'd like to detect the dynamic component of acceleration, i.e. the change in acceleration, and generate an interrupt when such change is detected. I see that MMA8451/2/3 calls this "Transient ...
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2answers
1k views

Lockup when executing relocated ISR in ARM Cortex-M0+

I've been writing a small program for my Freescale Kinetis KE04Z which runs in RAM in order to program the flash of the device. I've been using SWD to place the program in RAM and run it. All was ...
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1answer
1k views

Enabling Freescale IMX6 pull down registers on an input pin

I'm looking for a way to enable the pull down resistor on a Freescale iMX6 MCU. I'm running a Linux distribution on it and usually interact with the hardware using a higher-level language, so I'm ...
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1answer
47 views

Chip behaves differently in debug vs flash

I'm currently working on a program for an 8-bit freescale chip (MC9S08QG8) in CodeWarrior v10.3 which uses the timer/ period capture to turn a frequency to an analog voltage. I've gotten the thing to ...
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1answer
366 views

How to trigger several cameras from a microcontroller

I have 3 Nikon D300 cameras, each with a remote trigger release cable used to externally trigger the camera. Inside these cables are 3 wires, shutter, focus, and ground. The shutter and focus are ...
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1answer
1k views

Multiple audio codecs on an i.MX6Q

We are currently trying to bring up a custom i.MX6Q based board with Linux 3.10.17, two TI TLV320AIC3106 codecs and an S/PDIF interface. The two codecs are I2S slaves and are connected to the i.MX6 ...
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1answer
77 views

Freescale ARM mcu

I'm looking to go for a freescale arm cortex m0, specifically for MKE04Z8VTG4 device. The question is: it is possible to programming it from uart? Without any hardware programmer? Is there some ide ...
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1answer
270 views

Interpretation of the graph of accelerometer

I have plotted the raw values of my accelerometer in gnuplot, and the acceleration in the dimensions of x, y and z are as follows... The accelerometer sensor is in a steady position, my question is. ...
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2answers
1k views

Design Decisions for using ADC with no VREF

I was looking at Freescale's KE02 processor family, and the MCU designers made an interesting design decision revolving around the ADC that I can't completely wrap my head around. The KE02 has an ...
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1answer
385 views

Assembly Language / Assembly Instructions (HC12)

Starting at address $0800, CE 00 31 9E 00 2D 01 08 18 06 3F A7 Determine the assembly instructions and indicate the addressing mode of each instruction. CE 00 31 =====> ldx #$ 01 ;x <-- 0031 ...
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1answer
1k views

Unable to program Freescale Kinetis KL26 microcontroller over SWD

I just assembled a board that I have created that basically acts as a breakout board for a MKL26Z32VFM4. Today, I am trying to get it to communicate over SWD so I can program the initial bootloader. I'...
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2answers
628 views

FRDM-kl25z Serial Buffer Issue

I'm sending data over Serial to a FRDM-kl25z via a printf statement on another uC; ...
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1answer
333 views

Serial Link Between 3.3V devices

I have an RPi and a freescale FRDM-KL25z controller which will talk over serial protocol. I'm using the pyserial library on the pi: ...
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2answers
3k views

Single issue and Dual issue architecture

I am studying the PowerPC architecture on the MPC5644B. The documents from Freescale mention it to be a single Issue architecture. The data sheet states the following, ...
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1answer
948 views

Value for feedback resistor in pierce crystal oscillator configuration

This question is partially an "understanding english" question and partially and "understanding the pierce oscillator configuration" question. Backstory I'm currently looking at using a Freescale ...
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2answers
368 views

Can a digital input having internal pull up resistor drive a load?

simulate this circuit – Schematic created using CircuitLab I am working on MC56F8006 DSC . On power up or reset the default state of all GPIOs is inputs with internal pullups enabled. I am ...
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3answers
2k views

Power cycle error when trying to program/debug HCS08 MCU

I'm trying to program a Freescale MC12311 transceiver IC which has a 9S08QE32 MCU embedded in it: MC12311: Sub-1 GHz RF and 8-bit HCS08 MCU with 32KB Flash, 2KB RAM I'm using a Background Debug ...
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1answer
466 views

SPI SBC communication

I am using MPC5748G controller, in that i want to communicate my SPI with the SBC chip on board i.e MC33905, By going through the data sheet I am sending the proper commands to SBC through SPI API's ...
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1answer
716 views

Analyzing the crystal frequency (Bus Clock Frequency) of a HCS12 Microcontroller using an Oscilloscope

I have an HCS12 Mircocontroller and I would like to capture the crystal frequency from the bus clock on a oscilloscope. How do I find out where I should connect my probes on the board to analyze ...
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2answers
890 views

How to flag Kinetis bootloader to load new fw?

I have a board that features a Freescale Kinetis K60 MCU and I want to write a bootloader for it but I don't have hardware in place to signal it after a reset to go into "load new firmware" mode vs. "...
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2answers
2k views

Measuring water pressure in a tank

I am trying to build a pressure sensor ( PSI gauge ) that will be used to measure and monitor the pressure in a pool water filter. These generally have a mechanical pressure gauge like this.... What ...
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1answer
1k views

Still getting link error after switching to banked memory for Freescale HCS08

My program for a Freescale MC9S08DZ128 (HCS08 family) got too big, and I was getting the message: ...
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1answer
200 views

MAC Address and ColdFire MFC5329

I am working with the ColdFire MCF5329. I have worked on other projects where the Ethernet function was a separate chip, namely, SMC. The SMC Ethernet chip has pins out for a 64 byte EEProm to store ...
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2answers
741 views

Watchdog enables itself after reset

I am using TWR-S08DC-PT60 board which has a MC9S08PT60 microcontroller. I am trying to disable the watchdog timer in my application, just for ease of development. After configuring it in the software,...
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2answers
600 views

Apply PWM signal to PIN of a Microcontroller

I am using the MC9S08DZ60. I have been give a circuit diagram according to which i must program the micro-controller. I am using Code warrior with Processor Expert which allows me to initialize the ...
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1answer
1k views

Timers and internal clock generator on Freescale MCU

I am using MC9S08AW60A with DEMO9S08AW60E Board (Freescale). I have studied about the timers given with the MCU. I wish to know how exactly to Implement timers by code. The Freescale suite also comes ...
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2answers
436 views

Switch on a LED: why doesn't this code work?

I am using DEMO9S08AW60E and using Codewarrior(Version: 5.9) with Processor Expert. ...
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1answer
260 views

Basic Question Regarding Programming in CodeWarrior [closed]

I have basic knowledge of C++ and MicroControllers. Please Consider the following code excerpt from the header file of MC9s08aw60(freescale), i am working with Codewarrior V5.9. ...
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2answers
1k views

PWM timer problem with HCS08 - freescale

I am using a MC9S08LH64 microcontroller's timer module to generate an internal timer for synchronization. bus clock is at 4.3 MHz, modulo is set at 4309 (TPM1MODH and TPM1MODL) and I am expecting ...
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2answers
434 views

BeeStack and the Freescale MC13224

I've been a long term desktop application developer and now I have the need to dive into embedded. What I am looking to do is implement a Zigbee mesh network where there is one co-ordinator ...
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1answer
192 views

Help finding a freescale MC68LK331CPV27 datasheet

I'm looking for an old cpu datasheet which seems to have disappeared from existence. It is for a freescale MC68LK331CPV27. I've ran out of stock on an old cpu and the replacement (MC68LK332ACAG16) ...
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2answers
1k views

Resistive touchscreen with 5-wire connection & Freescale IMX28

I have a IMX28EVK board and I would like to to connect this board to a 5-wire resistive touchscreen. In the Reference Manual of the I.MX28, Freescale said: LRADC2 - 6 can be used for 4/5-wire ...
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1answer
120 views

Freescale MCP8260, don't understand pins

I am looking at the Freescale MCP8260 processor. For programming PINS you set values to some registers. I would like to use MII interface for Fast Ethernet for example. I can see the Dedicated PINS ...
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1answer
579 views

On Freescale iMX31, how can I translate SDRAM address to CPU address?

[This is a re-post of https://stackoverflow.com/q/5346225/69172] I'm new to iMX31 and embedded systems, please help me to understand the translation from SDRAM address to ARM CPU address, especially ...
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2answers
108 views

Using Port DD as GPIO on MCF5282

I’ve got a MCF5282 that I’m trying to use PDD4 as a GPIO on. In my setup code, I’ve got: ...
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4answers
888 views

How to get into Freescale 32-bit MicroControllers?

Which websites/blogs/tools/books/manuals would you recommend for getting into the Freescale microcontrollers, especially the 32-bit models? What are the best development tools (IDEs, compilers) for ...
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10answers
48k views

Why is AVR used in Arduino?

Why is Arduino using AVR? I understand that they are the official processor but there isn't a reason the code couldn't be ported to an ARM or a Freescale architecture other than cost, right? As long ...