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'[PIC:] PIC12F635/PIC16F636'
2004\06\03@145559 by Charles Craft

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PIC12F635/PIC16F636
http://ww1.microchip.com/downloads/en/DeviceDoc/41232A.pdf

Digikey has a placeholder for it but no price or availability.
Nothing on Microchip site in 12F section yet.

Looks like a 8Mhz (internal osc) 12F629 with some low power stuff thrown in.

What I really want is hardware SPI/I2C in a 8 pin flash part.
A USART in a 8 pin flash part would be cool too. :-)

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2004\06\03@151921 by tim_webb

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Not only would that be cool, but what if it had 2 USARTs in an 8-pin package...
I have not searched Microchip's site yet, but does anybody know if microchip has any PICs with more than one USART?
It sure would be nice to have an extra USART so I don't have to bit-bang my SPI/I2C when my RS-232 is already being used.

Thanks,

Tim

{Original Message removed}

2004\06\03@153336 by teven Kosmerchock

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Tim,

Look at the PIC18F6720, it has 2 USARTs. I used 1 for interfacing to a
PC (RS232) for
the main interface and I used the second one for a "service port". Only
problem is most
of the chips with 2 USARTs are in the bigger packages.

Steve


>>> .....tim_webbKILLspamspam@spam@AGILENT.COM 6/3/2004 12:18:25 PM >>>
Not only would that be cool, but what if it had 2 USARTs in an 8-pin
package...

I have not searched Microchip's site yet, but does anybody know if
microchip has any PICs with more than one USART?
It sure would be nice to have an extra USART so I don't have to
bit-bang my SPI/I2C when my RS-232 is already being used.

Thanks,

Tim

{Original Message removed}

2004\06\03@154735 by Spehro Pefhany

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At 01:18 PM 6/3/2004 -0600, you wrote:
>Not only would that be cool, but what if it had 2 USARTs in an 8-pin
>package...
>
>I have not searched Microchip's site yet, but does anybody know if
>microchip has any PICs with more than one USART?

I've used the PIC18F8520 in a couple of projects recently- it has two, however,
it also has an order of magnitude more pins.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speffspamKILLspaminterlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

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2004\06\03@190548 by D. Jay Newman

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> Not only would that be cool, but what if it had 2 USARTs in an 8-pin package...

I would second this. Either 1 USART and 1 SPI/I2C or 2 USARTs in an 8-pin
package.
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2004\06\04@074328 by Peter L. Peres

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>> Not only would that be cool, but what if it had 2 USARTs in an 8-pin
>>package...
>
>I would second this. Either 1 USART and 1 SPI/I2C or 2 USARTs in an 8-pin
>package.

Why hasn't anyone come up with a truly universal state machine that can do
USART, SPI, Microwire, I2C, synchronous serial and a couple more things
(like pwm) on the side ? All these share a number of modules, and it's
just a state machine after all. Each transmitter or receiver has a shift
register, a bit counter, has an action per bit sent, a start action, and a
stop action, and can be in one of four states: idle, starting,
sending/receiving, stopping.  There is also a bit counter, perhaps with
reloading. Why do these things have to come separate ?

Peter

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2004\06\04@171015 by Andrew Warren

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Peter L. Peres <KILLspamPICLISTKILLspamspammitvma.mit.edu> wrote:

> Why hasn't anyone come up with a truly universal state machine
> that can do USART, SPI, Microwire, I2C, synchronous serial and a
> couple more things (like pwm) on the side ? All these share a
> number of modules .... Why do these things have to come separate ?

   Many microcontrollers work exactly as you suggest; the 8051, for
   instance, does all those except I2C with shared circuitry... And
   firmware written for the Cypress Microsystems PSoC can
   dynamically  reconfigure a small number of digital blocks to
   provide all those functions and many more.

   -Andy

=== Andrew Warren -- RemoveMEaiwTakeThisOuTspamcypress.com
=== Principal Design Engineer
=== Cypress Semiconductor Corporation
===
=== Opinions expressed above do not
=== necessarily represent those of
=== Cypress Semiconductor Corporation

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