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New Project wp34s micro usb flash cable revisited
02-05-2015, 12:14 AM (This post was last modified: 02-05-2015 12:17 AM by BarryMead.)
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RE: New Project wp34s micro usb flash cable revisited
(02-04-2015 11:03 PM)matthiaspaul Wrote:  Does someone know if the calculator's RX and TX signals are ESD protected already?
The HP-20b/HP-30b schematic shows that the serial inputs are connected with jumpers (JP5, JP6) directly into inputs/outputs on the processor. So the only ESD protection would be the standard I/O input protection diodes on an ARM micro-controller input/output. (Not much)
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RE: New Project wp34s micro usb flash cable revisited - BarryMead - 02-05-2015 12:14 AM



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