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PAL - a modern equivalent for combinational logic
Must admit I quit using discrete logic chips (with a few exceptions) in the 16[R/L][2/4/6/8/8] days (before the turn of the century), all in 20-pin DIPs.  A 24-pin 22V10 was...
Wednesday, 24 November 2021 - 07:15
PAL - a modern equivalent for combinational logic
barnacle wrote: I've not used them before but I'm assuming that they can be used in a straight combinational logic way?   Yep.  In a 22V10 all registers are optional....
Wednesday, 24 November 2021 - 04:00
PAL - a modern equivalent for combinational logic
22V10s are still being made (by Lattice Semi, among others), and come in several zillion varieties of low voltage, low power, cost, package, and high speed.  The programming...
Tuesday, 23 November 2021 - 11:05
PAL - a modern equivalent for combinational logic
Try a 16V8, or for more fun, a 22V10.  Programming them is a bit of a pain in SOIC - you need to find a ZIF SOIC socket to stick on your programmer.  Chips themselves...
Tuesday, 23 November 2021 - 10:25
Looking for a list of DIP AVRs
Suggest throwing in a PLCC-44 socket somewhere.  I use a lot of mega8535s.  They make ZIF sockets for them too.  I don't think any current (modern) AVRs use PLCC,...
Tuesday, 23 November 2021 - 07:14
Strange observation: JMP and CALL are legal instructions on ATtinys
Wonder if this has any application to 'security' as in another thread.  If you can force in an illegal opcode, if someone steals your source code it won't work unless they...
Wednesday, 10 November 2021 - 20:32
Your thoughts on my firmware protection concept
awneil wrote: No need for a full temperature sensor if all you want is its serial number:   True.  But a thermal sensor is better at 'looking innocent'.    S.
Tuesday, 9 November 2021 - 23:59
Your thoughts on my firmware protection concept
If they're willing to take the top off the chip, your code is dead meat.  There's not much you can do about that.  But something occurred to me...   Put a 1-wire...
Tuesday, 9 November 2021 - 20:13
0x14 != 0x0c
Suggest you reduce the communication speed.  If your CLKDIV fuse is set, it will not program happily at what you think it might.   Note the verification error is in the...
Tuesday, 9 November 2021 - 19:52
How to measure nanoseconds
I'm tempted to propose a rule.  When you post that you'd like to measure something, you must specify precision and budget.  S.
Saturday, 23 October 2021 - 09:55
What does capacitance/voltage mean on this circuit?
avrcandies wrote: You will see on a lot of schematics some notes like:   Keep your fingers in your nose, away from High Voltages     Never actually seen that on...
Friday, 22 October 2021 - 16:01
Looking For An Odd Connector.
If you want some on the cheap, there's these:     S.
Tuesday, 5 October 2021 - 22:28