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Some pin usage questions
Hi, Got the below questions that I really want to be clarified on. 1. If I have a pull-up on a pin. Is it possible still using that pin for OUTPUT? For INPUT, that's no problem...
Sunday, 1 May 2011 - 05:17
Question on mix voltages of 3.3V and 5.0V
Hi, Consider the schematic at http://www.ikalogic.com/scanalog... 1. The 23K256 ICs take 3.3V for their VCC and GND pins. They are SPI slaves. The ATMEGA takes 5V. The MOSI and...
Friday, 29 April 2011 - 06:33
Optimizing a small assembly routine to do a lookup
Hi, First time with AVR Assembly Language. Read the awesome tutorial by Gerhard Schmidt at http://www.avr-asm-tutorial.net . Objective: Given a byte, do two lookups using each...
Wednesday, 6 April 2011 - 17:15
Any cheap stereo audio power amplifier?
Hi, I see that the TP150 or its derivatives are good candidates. See http://focus.ti.com/lit/ds/symli... . But, they are expensive. Is there is a cheaper alternative, e.g., with...
Thursday, 24 March 2011 - 22:57
Sample AT32UC3L064 project with wiring, e.g, a dev board
Hi, Just bought a couple pieces of AT32UC3L064. Looking for a sample AT32UC3L064 projects or dev board. Thanks!
Tuesday, 22 March 2011 - 04:23
Getting exact number of cycles per sec or usec of a uC
Hi, I am reading http://www.atmel.com/dyn/resourc... . Well, more like browsing, since it 800+ pages long. So, from page 783, max F_CPU is 50Mhz. Exactly how many cycles, say,...
Monday, 21 March 2011 - 19:51
Adjustable voltage regulator (TC1174 device) questions
Hi, I am planning to use the TC1174 to regulate a 5V down to 3.6V. Please see the attached schematic. Vin = 5V and max. 500mA can ne drawn from this Vin. Vout = 3.6V and max...
Monday, 14 March 2011 - 01:17
Please comment on the attached design/wiring
Hi, I am designing an adapter for an SMD part, that is, SMD to PDIP adapter. This part has a lot of VCC and GND pins. So, decouple these sets of VCC and GND pins with 0.1uF...
Saturday, 5 March 2011 - 17:21
Need bitmap routines for graphics LCD
Hi, I found graphics routines for LCDs (not specific to any LCD). But I am also looking for bitmap routines, such as drawing bitmaps with clipping abilities. Any pointer would be...
Tuesday, 1 March 2011 - 06:09
USB to RCA (Yellow/Red/White) cable question
Hi, Nowadays when you buy a digital camera, they give you a USB-to-RCA cable so that you can view the pictures on your TV. See attached image. I am thinking of doing a TV project...
Monday, 28 February 2011 - 02:09
2-bit video DAC questions
Hi all, I read the document http://instruct1.cit.cornell.edu... on how generate TV images (on NTSC TVs) using a 2-bit DAC controlled by the ATMEGA644. Please see the attached...
Sunday, 20 February 2011 - 05:05
Suggestion of an IC for interfacing with HDTV/digital TV?
Hi, So, Analog has the AD723/AD725 ICs, which are NTSC and PAL encoders, for analog TVs. Now the world has gone viral with digital TVs. Are there any corresponding ICs like the...
Friday, 11 February 2011 - 18:08