Alan B Pearce wrote:
>> The PIC16HV540 has it, and allows up to 15V supply.  Perhaps (I'm
>> speculating) HV represents High-Voltage?  BTW, that particular part is
>> OTP, but you can probably just search for other HV parts and see if
>> they're flash, etc.
>>     
>
> There are other HV parts. They all do it by requiring an external series 
> resistor, and an internal shunt regulator to limit the maximum voltage 
> across the chip. 
>
>   
seems a better idea to have -48V to 3.3V SMPSU, 90% + efficiency. If 
using R, G & B LEDs 3.3V PIC (parallel outputs on a 44pin QFP to 
increase  current or use  transistor drivers) is enough.
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