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Do floating inputs consume power while in power-down mode?
robiw wrote: I ordered another 2 chips and wait for them. But initially it consumed only 0.2uA (as in datasheet) and suddenly started consuming 300uA. I don't know why? Is it so...
Thursday, 3 March 2022 - 21:02
minimum sample frequency for potentiometer, button and encoder
flexbex1 wrote: On a dj mixer I will have several buttons, potentiometers and an incremental encoder. All will be obviously be hand driven. Now I am asking me what would be a...
Sunday, 27 February 2022 - 05:26
28HC256 - 5v eeprom, programmed from 3.3 system?
Another part for your list, could be AS29CF010-55CCIN  & AS29CF040   - faster and cheaper than your 28HC256 from https://www.alliancememory.com/p...
Sunday, 27 February 2022 - 04:52
28HC256 - 5v eeprom, programmed from 3.3 system?
barnacle wrote: Who-me wrote: Why not simply use 5V RAM ? Plenty fast enough.     We're back down to the 3v3 vs 5v programming issue, and overall cycle time. In general...
Friday, 25 February 2022 - 23:45
28HC256 - 5v eeprom, programmed from 3.3 system?
barnacle wrote: Yeah, CPLDs are something I've not used, and want to investigate. Though they have one of the same 'issues' as a prom does: they hide what's going on which...
Thursday, 24 February 2022 - 22:17
28HC256 - 5v eeprom, programmed from 3.3 system?
barnacle wrote: but I still get stuck: because the fast RAM runs at 3v3 or less,   Why not simply use 5V RAM ? Plenty fast enough.  
Thursday, 24 February 2022 - 21:21
Referencing voltage from another regulator
markas wrote: Is this expected? If so can anyone point me in the right direction to understand why it shouldn't work? If this isn't expected, I will do more research since clearly...
Wednesday, 23 February 2022 - 23:18
28HC256 - 5v eeprom, programmed from 3.3 system?
barnacle wrote: The memory is replacing a big pile of discrete logic - around a hundred chips. I may yet go that way, just for the fun of it... I need 16k rows of 21 bits If this...
Wednesday, 23 February 2022 - 19:56
28HC256 - 5v eeprom, programmed from 3.3 system?
barnacle wrote: Things may have got lost in translation. What I originally hoped for was a way to program/write to a 5v eeprom in a 5v system, using a temporarily attached 3v3...
Tuesday, 22 February 2022 - 22:10
28HC256 - 5v eeprom, programmed from 3.3 system?
barnacle wrote: I intend to drive the circuit at 5v. Most of it - a hundred or so chips - is 74HC so 2-6v, but they all run faster at 5v than 3v3. The eeproms are in the...
Tuesday, 22 February 2022 - 02:48
Quartz Crystal selection for the ATMEGA328P question. Is this logic right?
Godesroh wrote: Where Ci1 and Ci2 are just inside the chip. Are those the internal capacitors that can be used to load the crystal by selecting them with fuses? If so,...
Thursday, 17 February 2022 - 05:24
Programmer for AT89S2051 etc.
  JerryMouse wrote: I am afraid that I do NOT understand. It is part of AVRDUDE.conf file ??? So, can you send me complette config file containing infos for ALL...
Thursday, 10 February 2022 - 20:29

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