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Microprocessor Circuits   Page 7
Microprocessors:  #'s     A-B     C-G     H-L     M-O     P     Q-S     T-Z
Last Updated on: Monday, October 03, 2011 06:07 PM


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Quad 50E adaptors -  (electronic circuit added 7/03)
Quad 50E circuit -  (electronic circuit added 7/03)
Quad II circuit -  (electronic circuit added 7/03)
Quad spares suppliers -  (electronic circuit added 7/03)
Quadrature Signal Interface to a COP400 MicroController -  National Semiconductor Application Note  (app note added 2/06)
Radio Controlled 3way Light Switch  -  TRIAC based 3 way light switches are very uncommon. Typical circuit representative of those used in most light switch type digital timers. The timer module is normally a PIC or custom chip, and it syncs to the AC line so that a trigger pulse can be supplied at the right moment....[Reverse engineered schematic by Stepan Novotill]
RAM Keep-Alive -  National Semiconductor Application Note  (app note added 2/06)
Rapid Prototyping Methods for Embedded System Development -  Agilent Application Note....[App Note]
Rapid Prototyping Speeds Development of UMTS W-CDMA Algorithms -  Agilent Application Note....[App Note]
Ratiometric Sensing using the PIC16C774 -  Microchip Application Note Published 4-Apr-00  (app note added 2/06)
RC lowpass filter expands microcomputer’s output port -  21-Jun-07 Issue of EDN  A simple lowpass RC filter allows a single output pin of a microcontroller to expand the number of output bits....[Design Idea by Rex Niven, Forty Trout Electronics, Eltham, Victoria, Australia]
RCD Programmer -  Built with resistors, capacitors and diodes....
RCD Programmer (DIY) -  I believe that the "JDM Programmer" is cheap and very useful PIC Programmer. However, since "JDM Programmer" cannot control VDD, the algorithm "VPP before VDD" is inapplicable. Programming to the latest device from this reason may go wrong when using CONFIG settings as "Internal oscillator" "MCLR OFF". These devices are given power from….(electronic schematic added 11/08)
RCEN fuse bit programmer -  With this stand alone programmer you can  enable or  disable the internal RC oscillator of  AT90S1200 or  AT90S1200A.….(Circuit design added 03/09)
RDS Encoder -  schematic only (schematic / circuit added 6/07)
Read multiple switches and a potentiometer setting with one microcontroller input pin -  04/22/10 Issue of EDN  Use a single ADC input pin to sense pushbuttons as well as a potentiometer.… [Design Idea by Kevin Fodor, Palatine, IL]
Reader Reference Design -  Microchip Application Note Published 13-Jan-03  (app note added 2/06)
Reading & using Fast Fourier Transformation FFT -  Microchip Application Note Published 27-Jul-04  (app note added 2/06)
Reading Data from the Parallel Port -  (electronic schematic / circuit added 11/05)
Real Time Clock PCF8583 -  The PCF8583 is a clock/calendar circuit based on a 2048-bit static CMOS RAM organized as 256 words by 8 bits. Addresses and data are transferred serially via the two-line bidirectional I2C-bus. The built-in word address register is incremented automatically after each written or read data byte. Address pin A0 is used for programming the hardware address, allowing the connection of two devices to the bus without additional hardware.The built-in 32.768 kHz oscillator circuit and the first 8 bytes of the RAM are used for the clock/calendar and counter functions. The next 8 bytes may be programmed as alarm registers or used as free RAM space. The remaining 240 bytes are free RAM locations. ….(electronic schematic added 11/08)
Real-Time Operating System for PIC16/17 -  Microchip Application Note Published 7-Jan-00  (app note added 2/06)
Recording & Measurement Microphone -  A simple selection of projects for making your own microphones ....


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