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From: linnix on 24 Jul 2010 15:52
We are evaluating low end 32 bit USB (device only) uCs. Ideally, we
want 64K flash and 30 I/Os in 48 pins. So far, these are possible
choices: Are there any other we should like into?

AT32UC3B164 64K 28 two I/O short
LPC1343FBD48,151 32K 40 no 48 pins in 64K
NUC120LD3AN 128K 31 unproven product/company
From: linnix on 25 Jul 2010 15:47

> STM32,http://www.st.com/mcu/inchtml-pages-stm32.html
>
> has 37 I/Os in a 48 pin package, low cost, lots of goodies...
>

Yes, we are adding STM32F103 to the list, but with CAN and LIN, it's
pushing up the cost.

Flash I/O Cost Unneeded
STM32F103C8T6A 64K 37 5.00 CAN LIN
AT32UC3B164 64K 28 4.50
LPC1343FBD48,151 32K 40 3.20
NUC120LD3AN 128K 31 2 (?)
From: linnix on 25 Jul 2010 16:04

> PIC24 range probably has something

OK, the 16 bit PIC24FJ64 fits. Just to be fair, we have to add in the
8 bit ATXMEGA32D4 as well.

Flash I/O Cost Unneeded
STM32F103C8T6A 64K 37 5.00 CAN LIN
AT32UC3B164 64K 28 4.50
LPC1343FBD48,151 32K 40 3.20
ATXMEGA32D4-AU 32K 34 3.00
PIC24FJ64GB004-I/PT 64K 33 3.00
NUC120LD3AN 128K 31 2 (?)

Cost estimate for 1Ku.
From: iainjt on 26 Jul 2010 07:53
>
>> STM32,http://www.st.com/mcu/inchtml-pages-stm32.html
>>
>> has 37 I/Os in a 48 pin package, low cost, lots of goodies...
>>
>
>Yes, we are adding STM32F103 to the list, but with CAN and LIN, it's
>pushing up the cost.
>

STM32F101 is cheaper (no CAN).

Iain




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From: linnix on 26 Jul 2010 08:12
On Jul 26, 4:53 am, "iainjt" <iainjt(a)n_o_s_p_a_m.googlemail.com>
wrote:
> >> STM32,http://www.st.com/mcu/inchtml-pages-stm32.html
>
> >> has 37 I/Os in a 48 pin package, low cost, lots of goodies...
>
> >Yes, we are adding STM32F103 to the list, but with CAN and LIN, it's
> >pushing up the cost.
>
> STM32F101 is cheaper (no CAN).
>

But no USB.

Actually, the Atxmega64 has the same problem.

Most of the AVRs are either too small (not enough I/O) or too big (64
pins or more).

TI (Luminary Micro) has USB with the 100 pins chips only.

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