> -----Original Message-----
> From: Roman Black [SMTP:fastvid@EZY.NET.AU]
> Sent: Thursday, August 15, 2002 1:02 PM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      [PIC]:  how about a 3-pin PIC chip??
>
> Has anyone else ever desired a 3-pin PIC, or
> better still, ever seen/used a 3-pin micro??
>
> I'm imagining something the size of a TO-92 (small
> plastic transistor) or 3-pin SMT device, with
> 2 power pins and a single I/O pin.
>
> A simple pullup resistor on the I/O pin would allow
> it to transmit and receive digital at the same time
> on the one pin, so it could drive a constant PWM
> signal out (to operate a motor or SMPS etc), and
> at the same time receive serial in from any source.
>
So tell me again how it drives out PWM at the same time as receiving a
serial bit stream? :o)

> Internally it should have a precise osc with on-chip
> resonator so it can be used as a programmable
> real-time clock, or a timed controller system.
> And some internal eeprom... How much was it again
> to get a batch of custom chips made?? :o)
> -Roman
>
It would also have to have a one wire programming protocol, and no reset pin
(internal programmable brownout?).  I belive EEPROM cells are quite large,
so combined with the PIC itself I suspect that fitting it into a SOT23 style
package might be a challenge.

Regards

Mike

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