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Topic: New optiboot; beta testers welcome... (Read 115 times) previous topic - next topic

westfw


retrolefty

#246
Mar 09, 2012, 07:57 pm Last Edit: Mar 09, 2012, 08:03 pm by retrolefty Reason: 1

They all have two uarts...



It was my understanding also the the non P 644 offered only one serial port?

Edit: Looked at the 644 datasheet and the cover page does seem to list one serial port:

http://www.atmel.com/Images/doc2593.pdf

Lefty

CrossRoads

The currently available datasheets from last summer show 2 UARTs for '644A and '644PA

ATmega164A/PA/324A/PA/644A/PA/1284/P Summary
(file size: 595899, 33 pages, revision C, updated: 06/2011)
http://www.atmel.com/Images/8272S.pdf

ATmega164A/PA/324A/PA/644A/PA/1284/P Complete
(file size: 24554094, 584 pages, revision C, updated: 06/2011)
http://www.atmel.com/Images/doc8272.pdf

I didn't look into these:

ATmega164P, ATmega324P, ATmega644P Automotive Complete
(file size: 6188428, 377 pages, revision F, updated: 09/2009)
http://www.atmel.com/Images/doc7674.pdf

ATmega164P/324P/644P Complete
(file size: 9613207, 439 pages, revision 0, updated: 07/2010)
http://www.atmel.com/Images/doc8011.pdf

ATmega164P/324P/644P Summary
(file size: 565743, 28 pages, revision O, updated: 01/2010)
http://www.atmel.com/Images/8011S.pdf
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

retrolefty

#248
Mar 09, 2012, 08:13 pm Last Edit: Mar 09, 2012, 08:18 pm by retrolefty Reason: 1

The currently available datasheets from last summer show 2 UARTs for '644A and '644PA

ATmega164A/PA/324A/PA/644A/PA/1284/P Summary
(file size: 595899, 33 pages, revision C, updated: 06/2011)
http://www.atmel.com/Images/8272S.pdf

ATmega164A/PA/324A/PA/644A/PA/1284/P Complete
(file size: 24554094, 584 pages, revision C, updated: 06/2011)
http://www.atmel.com/Images/doc8272.pdf

I didn't look into these:

ATmega164P, ATmega324P, ATmega644P Automotive Complete
(file size: 6188428, 377 pages, revision F, updated: 09/2009)
http://www.atmel.com/Images/doc7674.pdf

ATmega164P/324P/644P Complete
(file size: 9613207, 439 pages, revision 0, updated: 07/2010)
http://www.atmel.com/Images/doc8011.pdf

ATmega164P/324P/644P Summary
(file size: 565743, 28 pages, revision O, updated: 01/2010)
http://www.atmel.com/Images/8011S.pdf


But there does exist a ATmega 644/V chip, which datasheet I posted before.

From cover sheet:

Quote
• Peripheral Features
- Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes
- One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture
Mode
- Real Time Counter with Separate Oscillator
- Six PWM Channels
- 8-channel, 10-bit ADC
Differential mode with selectable gain at 1x, 10x or 200x
- Byte-oriented Two-wire Serial Interface
- One Programmable Serial USART- Master/Slave SPI Serial Interface
- Programmable Watchdog Timer with Separate On-chip Oscillator
- On-chip Analog Comparator
- Interrupt and Wake-up on Pin Change


Lefty

CrossRoads

Data sheet is no longer posted, am guessing that chip is no longer in production.
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

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