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15205 Views 10 Replies Latest reply: Sep 9, 2011 9:56 AM by JimHarrison

Statropy

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May 19, 2011 3:55 PM

CAN capable microcontrollers

I am desiging a CAN-based networking solution, and I need some help choosing a microcontroller. Price is always a factor. So far I am considering:

PIC18FxxK80

Available in several sizes, inexpensive, 8-bit. Requires external CAN transceiver. Can run at 3.3V or 5V.

LPC11C2x

32-bit ARM Cortex-M0 core. Includes CAN and CANopen drivers in ROM. Also has the CAN transceiver on the chip, so an external one is not required. Needs 3.3V (MCU) and 5V (transceiver).

Are there any other similar parts that I should be considering? Does anyone have any experience with either of these?

#TWiPad

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Tags: mcu, can, arm, microchip, cortex, pic, lpc, rom, transciever, pic18

cody
13 posts since
Mar 28, 2011

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May 20, 2011 2:57 PM (in response to Statropy)
CAN capable microcontrollers

I worked on a few projects that used CAN bus but it was years ago. I beleive we were using a control from Siemens with an external CAN transciever. This paper has some information related to options with Microchip.

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regsoft
2 posts since
May 20, 2011

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May 20, 2011 3:11 PM (in response to Statropy)
CAN capable microcontrollers

I have been very impressed with the power and performance of Silabs products and have used them in several products. I recomend the SDCC compiler which can be used with the free IDE from Silabs and allows full access to all the memory on the chip. The compiler that comes with the dev board only supports a few K and then costs like $5K. SDCC is FREE!
http://www.silabs.com/products/mcu/automotive/Pages/default.aspx

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- Statropy
  3 posts since
  May 19, 2011
  
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  May 20, 2011 3:35 PM (in response to regsoft)
  CAN capable microcontrollers
  
  I was not familiar with those. Thanks for the suggestion. Looks similar to the PIC18, but a little more expensive. #TWiPad
  
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regsoft
2 posts since
May 20, 2011

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May 20, 2011 5:09 PM (in response to Statropy)
CAN capable microcontrollers

Pic18 tops out at 16mips but the silab's parts due up to 100mips. Lots more memory and IO as well. Better off with the PIC18 if you don't need the processing speed / A/D resources / memory. I neaded all 3.

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TeCody
1 posts since
May 23, 2011

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May 23, 2011 12:43 PM (in response to Statropy)
CAN capable microcontrollers

Have you considered the dsPIC30 or 33 series? They run a little more per piece, but have 16-bit architecture and an internal CAN.

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- Statropy
  3 posts since
  May 19, 2011
  
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  May 23, 2011 12:50 PM (in response to TeCody)
  CAN capable microcontrollers
  
  I used a PIC24 in a previous CAN project. It has the same architecture as the dsPIC, but without the DSP instructions. The errata on the CAN controller really crippled the usefulness of the chip. I spent a lot of software development time working around the limitations. #TWiPad
  
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DmitriGolovatch
1 posts since
Jun 5, 2011

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Jun 5, 2011 5:39 AM (in response to Statropy)
CAN capable microcontrollers

Dear Statropy!

I am fan of Fujitsu 16bit CAN controllers and make several designs with it.

Sincerely,

Dmitri Golovatch

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kukreti.shobhit
3 posts since
May 23, 2011

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Jun 17, 2011 12:32 AM (in response to Statropy)
CAN capable microcontrollers

Renesas RX62N series is good as well. It has a lot of libaries to get you started in no time.
#TWiPad

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Letech
1 posts since
Aug 9, 2011

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Aug 9, 2011 10:46 PM (in response to Statropy)
CAN capable microcontrollers

We have used AT90CAN128.

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JimHarrison
70 posts since
Sep 9, 2011

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Sep 9, 2011 9:56 AM (in response to Statropy)
CAN capable microcontrollers

This is a good time to look at www.embeddeddeveloper.com. You can pick a supplier or suppliers, choose 8/16 or 16/32 bit core, and specify a CAN port (or multiple ports) and you'll have a nice list.

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May 19, 2011 3:55 PM

CAN capable microcontrollers

PIC18FxxK80

LPC11C2x

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