Do not allow excess time when transitioning MCLR between
VIL and VIHH; this can cause spurious program executions to occur.
Funny, I've been thinking the same thing these last few days. The never ending compromises between fuctionality, capability, simplicity, size, and economy (grin).polymath said:Seems a shame to do all this work without including buffers.
- WHAT ? So Negative and Wrong.Andy_123: Clone is clone, it will never be as good as the original.
I don't see inductors for 34063?PIC18F4550 with 16MHz xtal
PIC16F877 (now obsolete) with 20MHz xtal
1 x 74HC126, 1 x 74HC125, 1 x 74LS07N,
powered ONLY from USB
MC34063 for adjustable +VHH via 5k0 preset (20k & 10k on earlier designs)
2 x transistors for switching Vpp line
1 x jumper to isolate target Vdd
1 x 3pin Voltage REG?? any guesses?
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