Post Created date
Jittering clock output on Tiny13 - going INSANE (internal RC
Which package? The DFN, properly laid out should be quieter than the little dip as you have the back side of the chip to a good ground. Why two tantalums? Is there another load?...
Wednesday, 12 March 2008 - 00:23
Low current not detected by BOD?
Please explain "loses it's tracking". Are you trying to say that the duty cycle and or frequency changes? Also consider posting a schematic. Helps to spot some of the likelier...
Friday, 29 February 2008 - 19:34
How to connect 3v Atmega128L to 5V LCD display?
The OP wasn't asking about generating 5V from 3V, but interfacing the logic. Level shifters make for a safe interface, there are specific ICs that do that. Most LCD comm lines...
Tuesday, 26 February 2008 - 22:23
ATmega8 operating at lower supply voltage than recommended
You have problems with the ATMega8 I2C interface and are running the part at below VCC spec. Hmm. Shouldn't you expect that? Get your circuit in spec - crank up the ATMega8's VCC...
Thursday, 21 February 2008 - 22:39
Another fried dragon
There are two 6 pin devices that are found on the Dragon's hide. The parts marked 1Ft are BC847BS, a dual NPN part(symetrically packaged so no pin 1 marker), while parts marked...
Thursday, 21 February 2008 - 22:22
PCA9531 LED dimmer
Add a pull up resistor on U4, pin 4. Those outputs are open drain.
Monday, 21 January 2008 - 23:13
PCA9531 LED dimmer
First, where is at least a partial schematic? Such is a big help in spotting cockpit errors. Next, outputs are open-drain. You can ignore unused pins. If you have LEDs connected,...
Monday, 21 January 2008 - 18:45
No connect pins on MLF packages
For experimental boards I use the toaster oven method. Excess solder appears as bumps on one or more pins, requiring touch-up with a fine point iron. With a proper land pattern...
Wednesday, 19 December 2007 - 18:35
No connect pins on MLF packages
Just find a good toaster oven and you are set to go.
Tuesday, 18 December 2007 - 19:24
No connect pins on MLF packages
Jorg, Did you check continuity? Many die are glued to the pad, but not with electrically conductive adheasive. I don't have one of the ATTiny13s around to check myself, Though I...
Thursday, 13 December 2007 - 21:19
No connect pins on MLF packages
Bonding out to a pin is expensive and typically not done unless there is a test need. You can probably ground an unconnected pin (NC), but not a "Do Not Connect" (DNC) pin. The...
Thursday, 13 December 2007 - 19:07
I2C
As I heard it, the patents have expired and Philips put it in the public domain. Supposedly anyone can now use the term I2C. Side note, SMB is an extension of I2C with the most...
Friday, 16 November 2007 - 18:01

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