Hello, All! I'd like to get speed of 500 Kbit/sec by SPI communication. I don't quite understand how can I calculate the clock frequency to...

Hello, All! I'd like to get speed of 500 Kbit/sec by SPI communication. I don't quite understand how can I calculate the clock frequency to adjust to this value? Could you please explain. I'm using ATmega162. Thank you. With best regards, Roman Mashak. E-mail: mrv@tusur.ru

CAN THE EXTERNAL CIRCUIT INCREASE THE INTERNAL CLOCK SPEED OF TH MICROCONTROLLER(AT89C51) EXTERNAL CIRCUITS MEANS...

CAN THE EXTERNAL CIRCUIT INCREASE THE INTERNAL CLOCK SPEED OF TH MICROCONTROLLER(AT89C51) EXTERNAL CIRCUITS MEANS OSCILLATOR/RESONATOR This message was sent using the comp.arch.embedded web interface o www.EmbeddedRelated.com

hi all! I'm using NiosII with StratixII. i wanted to get interrupts from a micro controller of 7.393MHz Oscillator which generates half...

hi all! I'm using NiosII with StratixII. i wanted to get interrupts from a micro controller of 7.393MHz Oscillator which generates half the oscillator clock. Nios works at 50Mhz. so what modification i need to do on nios

I need some input on what the best microcontroller (relatively cheap) and OS to use for a project I will be starting soon. The project...

I need some input on what the best microcontroller (relatively cheap) and OS to use for a project I will be starting soon. The project requires a Ethernet connection, so an on-board MAC is desirable. A real time clock and several timers will be required. The MCU will need to interface with a RC5 encoder for IR control of devices (and possible RF communication as well). On the software si...

Hi, can anyone advise please? I've migrated code running on a PIC16C54 to a PIC18F1320. Both use an external RC network. On the OSC2 pin both...

Hi, can anyone advise please? I've migrated code running on a PIC16C54 to a PIC18F1320. Both use an external RC network. On the OSC2 pin both processors show a nice clock at 25 KHz (which is correct). However, the 18F1320 seems to be executing code at twice the speed! Have I overlooked something? Thanks in advance for any help? Simon

Hi all, Does anybody have any experience working with the Emicros I2C232 converter? I expected it to have a clock signal, but I am not...

Hi all, Does anybody have any experience working with the Emicros I2C232 converter? I expected it to have a clock signal, but I am not getting a signal out at all. Is there some sort of command that needs to be sent to initialize it? Thanks, Ben

Does anyone know of a PCI card with a RS-422 port that supports an external clock and a frame sync signal? Thanks! -larry

Does anyone know of a PCI card with a RS-422 port that supports an external clock and a frame sync signal? Thanks! -larry

Is it possible to hook pins SCL,SDA of Dallas DS1307 RTC with I/O ports of Intel 386EX processor? Thanks learner

Is it possible to hook pins SCL,SDA of Dallas DS1307 RTC with I/O ports of Intel 386EX processor? Thanks learner

Hi all, I am still relative new to low-level programming microcontrollers, currently doing some work on a STM32F103RB using forth. To...

Hi all, I am still relative new to low-level programming microcontrollers, currently doing some work on a STM32F103RB using forth. To get to know the device, I am now trying out some code to change the clock from internal8Mhz, to External48Mhz and External72Mhz. There are two things I do not really understand. 1/ What exactly is the purpose of the Flash Latency? You need to chang...

Hi, Does anyone know of a small smt real-time clock (RTC) that has a SPI interface? Ideally, the device could still operate with a very low...

Hi, Does anyone know of a small smt real-time clock (RTC) that has a SPI interface? Ideally, the device could still operate with a very low battery voltage and would have a very low standby current spec. Anybody have a favourite part or know of one? Thanks.

I just received some samples of the LPC903 the other day and it hit me. Where is the specification for the ICP? I know it only needs...

I just received some samples of the LPC903 the other day and it hit me. Where is the specification for the ICP? I know it only needs clock,data,reset but I can't any find a document that describes the timing and format for that section. I know that you can use the eval board plus an adaptor to talk to these things but it is usual for a manufacturer to release the programming details. ...

Hi all, I'm really losing my mind now, been fighting with this for 8 days now, I give up. I hope you can tell me what's wrong in my setup....

Hi all, I'm really losing my mind now, been fighting with this for 8 days now, I give up. I hope you can tell me what's wrong in my setup. :( I self made a PIC18F8720 development board, and it seems to work, because I can program the chip with no problems. I'm using 100 nF SMD capacitors near every Vdd (including AVdd), and an integrated clock oscillator. It's a 24 MHz CMOS part by Epso...

I'm building a little toy, and need to read a hand-encoded storage medium something like punched tape. Right now I'm looking at the Panasonic...

I'm building a little toy, and need to read a hand-encoded storage medium something like punched tape. Right now I'm looking at the Panasonic CNB1002 reflective photosensors, which integrate an IR LED and phototransistor in a small gull-wing SMD package. In my small quantities they're about $0.55 each. I need three - a clock bit, and two data channels. Apart from the cost they're perfect - th...

I want to implement a monochromatic graphic display with an 8 bit micro....this display requires clock frequency of 10MHz max, and my micro is...

I want to implement a monochromatic graphic display with an 8 bit micro....this display requires clock frequency of 10MHz max, and my micro is used at 16MHz...Is impossible to drive this display without any controller?What do you think? Thanks

Hi, We'll be using the PLL for the first time in a product, out of necessity (the micro only allows a crystal up to 8MHz, but we need a 32MHz...

Hi, We'll be using the PLL for the first time in a product, out of necessity (the micro only allows a crystal up to 8MHz, but we need a 32MHz clock). The PLL will also be clocking a CAN module within the microcontroller. I'd be grateful for insight into any of the following questions: a)How do long do PLL's take to start? b)Do PLL's ever fail to start? c)If there is more than on...

There are many freely available TCP/IP stakcs (OpenTCP, lwIP, ethernut etc.) as well as many commercial ones (NetX, CMX, ...) . I would...

There are many freely available TCP/IP stakcs (OpenTCP, lwIP, ethernut etc.) as well as many commercial ones (NetX, CMX, ...) . I would appreciate if you can comment on the performance of TCP connections (as well as UDP, if available). The type of micro used as well as CPU clock is also usefull. This is not a school project nor market survey. I simply want to see what can I expect from...

Hi, I have been developing an application using a Microchip 18F452 with 40 Mhz clock. Unfortunately, it seems like the device is too slow for...

Hi, I have been developing an application using a Microchip 18F452 with 40 Mhz clock. Unfortunately, it seems like the device is too slow for the application and I need something faster. Hence I am asking for some recommendations. My application is the following. The processor is connected to an analog sensor. It needs to sample the sensor to a 10-bit digital value and transmit it bit-b...

Hi, I need to stream audio data and control info I2C out of my PC into some external hardware and was thinking of using a FIFO to deal with the...

Hi, I need to stream audio data and control info I2C out of my PC into some external hardware and was thinking of using a FIFO to deal with the different clock boundaries. I was wondering if anyone had some startup verilog code on FIFOs, I am using a Xilinx FPGA Thanks Ryan (ryan.pinto79@gmail.com)

Hello Fella's I have built this clock project and it is now operational. In fact it works great. The author passed along the hex...

Hello Fella's I have built this clock project and it is now operational. In fact it works great. The author passed along the hex files to me to program it. And I was successful with it as well. But, I would like to change it to a 24 hour display and that will require just one small update in this code, http://www.kd7lmo.net/sourcecode/ClockMaster.c I would like to try thi...

An embedded project I'm working on requires the ability to read the status of up to 64 input ports - but obviously I want to use as few of my...

An embedded project I'm working on requires the ability to read the status of up to 64 input ports - but obviously I want to use as few of my microcontroller pins as possible. Somewhere I heard of devices called 'sequencers' or something like that where you just feed it a clock signal and it turns on individual i/o pins in order and then wraps around to pin zero again (or is reset with a thi...