HP-19C Repair Odysee
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07-23-2021, 03:26 AM
Post: #84
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RE: HP-19C Repair Odysee
(07-21-2021 12:41 PM)jjohnson873 Wrote: ....have you looked at the Microchip/Microsemi 250MHz, Igloo nano series of flash based FPGAs? Igloo nano QN48 6x6mmm with 34 I/O would be the smallest to handle. This is bigger than an PIC16Fxxx 4x4mm 36 I/O, and needs a lot of additional ICs: 1.5V regulator 3.3V regulator, power sequencing and level shifters, some bidirectional which needs outputs for switching the direction. Very challenging! Bernhard That's one small step for a man - one giant leap for mankind. |
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