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Serial ADC---Interface with AT90USB1287 in USART SPI mode
Hey...everyone I am interfacing serial ADC. I need some help , regarding USART in SPI mode, http://www.mouser.com/ds/2/256/M... ... 102916.pdf It requires 24 continuous clock...
Wednesday, 6 November 2013 - 03:56
AT90USBKEY2 External ADC reference voltage
Dear all, I want to use ADC of At90usb1287. In the datasheet it is mentioned that reference voltage can be 0-Vcc. I want to give 1.023V reference voltage to Aref pin. I...
Thursday, 31 October 2013 - 05:43
pulse counter using usb1287
Hello to all, I am trying to make pulse counter using usb1287 controller. The pulse output available has specifications: Max. Pulse rate : 3.3*10E5, Pulse width =...
Thursday, 22 August 2013 - 06:25
SPI clock always running...how to do that?
I have at90usb1287 and I want to use spi hardware to connect to external ADC which supports SPI. Here, I am able to see data and clock signal out only when controller sends the...
Tuesday, 2 July 2013 - 17:02
Atmega128 ADC - Sampling Frequency.
I have atmega128A connected to external 16MHz crystal. I am trying to check maximum ADC samples it can support. After reading datasheet and other posts on forum I want to post my...
Wednesday, 30 May 2012 - 09:19
strange problem,,,,,,ISP.
Hello to all...... I have one sensor which gives data through RS-485...I used atmega32 and max485 to read the sensor data...I have used isp programming to program atmega32...(...
Friday, 9 September 2011 - 14:09
At90usb1287 & Bluetooth Usb dongle
Hello all.... I am looking for bluetooth connectivity between uC and mobile phone....I found bluetooth module little expensive, but this usb dongle is cheaper....Is this possible...
Sunday, 24 July 2011 - 09:37
Atxmega series controller programming...
Hello to all... I am looking for programming xmega series controller....I found that it does't support SPI programming which I used to program atmega series...
Tuesday, 5 July 2011 - 07:25
SD card, USB Pendrive & Avr controller
I want to design a system in which one avr controller collects data and stores it in SD card(2 GB)... and I want to have one usb port. So whenever user add its USB STICK in the...
Thursday, 30 June 2011 - 05:24
timer1 as counter
In at90usb1287, I want to use timer1 as counter... I have connected my pulse source to pin no.31 (T1)PD.6. I want to use prescale=1 I have defined registers as TCCR1A=0 TCCR1B=129...
Wednesday, 24 November 2010 - 05:55
at90usbkey and at45DB642D help!!!!!
I want to save data to data-flash at45db642 present on at90usbkey... After reading the datasheet of dataflash I am trying to write 3 bytes in buffer1 and trying to read the same...
Monday, 15 November 2010 - 10:01
at90usbkey
I want to give Aref a 5V in At90uskey...How to make Vcc 5V? I want to use external power supply and use usb1287 as a device mode... making Usbcon pin high will do that???
Monday, 4 October 2010 - 09:14

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