Microprocessor Circuits   Page 7
Microprocessors:  #'s     A-B     C-G     H-L     M-O     P     Q-S     T-Z
Last Updated on: Friday, March 12, 2010 12:07 PM

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 Clock - Scroll down to find link to circuit drawing and circuit explanation….(added 09/06)

Radio Controlled Clock with large-size display - Scroll down to find link to circuit drawing and circuit explanation….(added 09/06)

Radio Controlled Clock with middle-size display - Scroll down to find link to circuit drawing and circuit explanation….(added 09/06)

RAM Keep-Alive - National Semiconductor Application Note   (app note added 2/06)

Rapid Prototyping Methods for Embedded System Development - Agilent Application Note   (app note added 6/06)

Rapid Prototyping Speeds Development of UMTS W-CDMA Algorithms - Agilent Application Note   (app note added 6/06)

Ratiometric Sensing using the PIC16C774 - Microchip Application Note Published 4-Apr-00   (app note added 2/06)

RCD Programmer - Built with resistors, capacitors and diodes.  (circuit added 08/07/06)

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 the "JDM programmer",and execute program code. An error may come out by verification, or it may become impossible erasure and become impossible re-programming . In order to solve this problem, I designed a programmer based on the "JDM programmer." Since this programmer was made of resistors, capacitors, and diodes, I named this the "RCD Programmer." "Hardware settings" of IC-Prog are the same as the "JDM programmer." ….(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 / circuit added 6/07)

Reader Reference Design - Microchip Application Note Published 13-Jan-03   (app note added 2/06)

Reading and 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)