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Microprocessor Circuits
Microprocessors:  #'s - B      C - F      G - K      L - M      N - P      Q - S      T - Z


Last Updated: October 24, 2017 02:55 PM

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

Speed C functions for C16x microcontrollers -  08/03/00 EDN-Design Ideas - The Infineon C16x Series of Cs use an internal 16-bit-register architecture.  The architecture can also process byte-wide functions.  The C uses byte moves to implement library functions such as memset (]or memcopy (].  This process makes the library code (DI #2569] __ Circuit Design by Hans-Herbert Kirste, WAGO, Minden, Germany - August 3, 2000

Speed Controller for Film Projectors -  Do you have old family movies on film? Have you watched them lately? You may be shocked by how much they have deteriorated over the years.  They need to be transferred to DVD before the film deteriorates to the point where it is unwatchable.  Video conversion is not as straightforward as you might think but this simple project enables you to do it.__ SiliconChip

Speedy logic translator uses little power -  07/08/98 EDN-Design Ideas - In handheld equipment, component count and power consumption are critical considerations.  This design idea uses only a few transistors to configure a high-speed output stage of an RS-232C link while draining few precious milliamperes from the batteries.  In general __ Circuit Design by Davis Magliocco, CDPI, Scientrier, France

SPI Flash Microcontroller Programmer V3.7 -  This SPI Flash Programmer can be used either for in-system programming or as a stand-alone serial flash programmer for the Atmel SPI programmable devices.  The programmer hardware interface is controlled by the PC parallel port and the parallel port control signals are freely selectable by the user.  The software supports both the 8051 and AVR series devices.   __ Designed by Wichit Sirichote

SPI Interface Big 7-Seg LED -  Big display for general purpose usage, the interfacing is SPI serial interface, requires only 3-wires.  Multiple digit can easily be made.  DXF files single side PCB.   __ Designed by Wichit Sirichote

SPI2CF, a fast & efficient WLAN interface for the AVR -  The page is about equipping an Atmel AVR microcontroller based system with a Prism WLAN interface.  This document is intended for people that already have experiences with the AVR microcontrollers and teaches them how to add a cheap but flexible WLAN interface to your AVR projects. __ Designed by Till Harbaum <Till @ Harbaum.org>

SPI2CF-WLAN for AVR. Part 1 -  The complete WLAN solution for AVR and other CPUs The page is about equipping an Atmel AVR microcontroller based system with a PRISM WLAN interface.  This document is intended for people that already have experiences with the AVR microcontrollers

SPI2CF-WLAN for AVR. Part 2 -  The complete WLAN solution for AVR and other CPUs Software The software needed to drive the SPI2CF consists of two main parts: The low level drivers needed to access the PRISM compact flash slot via SPI and a  (hardware independant) TCP/IP stack on

SPI2CF-WLAN for the AVR. Part 3 -  The complete WLAN solution for AVR and other CPUs The SPI2CF chip used in the SPI2CF demo system is based upon a cheap CPLD.  The necessary WebPack ISE development system is available as a free download from Xilinx.  It can therefore be used for

Spydar 2 -  PIC Project  This is a circuit monitoring device.  It runs for over 10 days and can log up to 32k events both digital and analog.  Samples are logged either on a timing basis  (.01 to 2.5 seconds) , or on a triggered basis.  Four inputs are provided, up to three of which can be analog __ Designed by Luhan Monat - Mesa Arizona

Square Wave Oscillator -  In this page, I introduce the square wave oscillator which used the Schmitt inverter circuit which was made with the CMOS .  The Schmitt inverter circuit has the hysteresis characteristic.  The circuit to introduce is the oscillation circuit which used this characteristic.  By the hysteresis characteristic, the voltage which becomes the H level with the input voltage of the inverter rising from 0 V  (Voltage that the output becomes 0 V) and the voltage which becomes the L level, descending from +5 V  (Voltage that the output becomes +5 V) are different.   __ Designed by Seiichi Inoue

Square wave oscillator (2) -  I introduce the square wave oscillation circuit which used the CMOS inverters in this page.  This circuit is the circuit which is often used by the following reason.   __ Designed by Seiichi Inoue

Squeeze extra outputs from a pin-limited microcontroller -  4-Aug-05 EDN-Design Ideas - Shift register expands small-footprint microcontroller I/O __ Circuit Design by Abel Raynus, Armatron International Inc, Malden, MA

State & Timing Modules for Agilent Technologies Logic Analysis Systems -  Application Note__ Aligent

Statistical process control -  Application Note__ MiniCircuits.com

Stepper Motor Controller -  Use one of those surplus motors with these cheap and easy-to-build controller.__ SiliconChip

Stepper Motor controller -  On these pages, I will introduce a control circuit for stepper motor.  The software of this project is adapted to Embedded Systems  (Lab13) for 2002 of Cleveland State University.  PIC16F84A __ Designed by Seiichi Inoue

STK 500 Development board -  This converter comes as an aid to STK500 board.  It uses the famous MAX232 for the signal level translation.  It requires a 1 to 1 rs232 cable for the connection with the PC.  __ AVR Projects Dim

Stop Those Zaps From Double Insulated Equipment! -  If you have experienced mild tingles or shocks from double insulated equipment, you will want to know how to prevent them.  Here's our "Tingle Terminator": a simple solution to this vexing problem.  There is no need to gain access inside the equipment and it will not void the warranty.__ SiliconChip

Student DC Power Supply -  Build a simple DC supply having three output terminals: regulated +5VDC, unregulated +10VDC and 7.5VAC.  The supply is suitable for microcontroller experimenting.   __ Designed by Wichit Sirichote

Studio 350 Power Amplifier Module -  Want an audio power amplifier with real grunt? This rugged module is capable of delivering 200W RMS into an 8-ohm load and 350W into a 4-ohm load, at very low distortion.__ SiliconChip

Studio 350 Power Amplifier Module; Pt.2 -  The construction details for this new high-power audio amplifier plus the circuit and wiring details for a matching power supply.__ SiliconChip

Studio Series Remote Control Module -  Works With Any Universal Remote Control!__ SiliconChip

Super Annoying Musical PIC Thing -  This is a really annoying little project.  It plays "Oh When The Saints Go Marching In" incessantly.  It's built for a 16F84 with a 10MHz oscillator, and uses pin B1 as the audio output.  It'll probably work on a 16C84 too.  Just connect a cheap piezo speaker to B1 and GND, and hey presto! Instant irritation! Trust me - words cannot convey how MINDLESSLY REPETITIVE and ANNOYING this thing is.  The one slightly clever thing about it is that it uses Pulse Width Modulation to produce the effect of 3 notes at once on a single digital channel.  The ZIP file contains full source, and a HEX file.   __ Designed by Ben  last name not found

Super Remote -  Using a PIC12F683 and a few transistors, it is theoretically possible to boost the power to a standard 433 MHz remote transmitter module.   (Note hypothetical image at right)  __ Designed by Luhan Monat - Mesa Arizona

Super Speedo Corrector -  Get your electronic speedo reading accurately__ SiliconChip

SuperCharger Addendum -  Did you build the SuperCharger decribed in Nov/Dec 2002.  If so, you need this simple 2-transistor add-on board.__ SiliconChip

SuperCharger for NiCd & NiMH
-  Build this advanced unit to fast-charge the new-generation super-capacity NiCd & NiMH
batteries.__ SiliconChip

SuperCharger for NiCd & NiMH
Batteries-Part 2
-  Completing construction and learning how to drive the new SuperCharger.There's also a handy table of beep error codes.__ SiliconChip

Superprobe -  The Superprobe project was designed to see how much could be done with a PIC chip and just a few parts.  The image at the right shows the capacitance measuring mode.   __ Designed by Luhan Monat - Mesa Arizona

Suppression of Prescaler Self-Oscillation 1/14/94  -  App Note  Doc #902__ California Eastern Laboratories

Surface Mount Environmental Specifications -  Application Note__ MiniCircuits.com

Switch Conserves Microcontroller's I/O Pin -  09/15/94 EDN-Design Ideas - The I/O pins of small, inexpensive microcontrollers are usually at a premium.  The PIC16C54 has only one and a half ports  (12 I/O pins) .  Some processors have even fewer.
My application required a single-pole, six-position rotary switch for six different user selections.  The direct approach would require six P pins, one for each selection, plus a pullup resistor for each pin. __ Circuit Design by Franklyn L Dahlberg Jr, US Air Force, Hill AFB, UT

Switch serves dual duty in small, microprocessor-based systE - M -  03/30/06  EDN-Design Ideas - Low-cost, easy-to-use design allows monitoring of peripherals, sensors __ Circuit Design by Steve Hageman, Windsor, CA

Switch Yields Programming Voltage for Flash Cs -  08/01/96 EDN-Design Ideas - Flash Cs are gaining in popularity because of their low cost and ease of use.  For example, Atmel's 8051-compatible mCs range from 40-pin drop-in replacements to 20-pin devices.  The problem with new flash Cs devices is the need for support tools, such as suitable flash-memory programmers.   __ Circuit Design by Dhananjay Gadre, IUCAA, Pune, India

Switcher IC hikes Battery Charger's Efficiency -  06/23/94 EDN-Design Ideas - The adjustable switching-regulator LM2575T-ADJ, IC1, in Fig 1 replaces a power-wasting pnp transistor in the data-book design for the NiCd battery charger IC2, a MAX713.    (Its sister device, the MAX712, handles NiMH
cells.   ]IC2 "fast-charges" cells by monitoring the cell's voltage and charging current __ Circuit Design by Huw Jones, Gyrus Medical Ltd, Cardiff, Wales, UK

Switching regulator (1) -  I introduce the switching regulator which used LM2575-5.0 in this page.  You can make the stable voltage by using the 3 terminal regulator like LM317.  However, because the output electric current and the inputted electric current are the same approximately, the difference between the input electric power  (The input voltage x The input electric current) and the output power  (The output voltage x The output current) is consumed as the heat with the regulator.  Because it is, the efficiency isn't good.  In case of the switching regulator, it inputs only the electric power which is necessary to output from the input by the switching operation.  Because it is, there is little electric power to consume with the regulator and it is efficient.   __ Designed by Seiichi Inoue

Switching regulator 2 -  I introduce the switching regulator which used MC34063A of the MOTOROLA, Inc.  in this page.  This regulator is housed in the DIP  (Dual In line Packge) with 8 pins.  The 1.5-A output current can be gotten without the heatsink in spite of this size.  The input voltage can be used from 3 V to 40 V and can do the function of the Step Up  (making the output voltage which is higher than the input voltage) , the Step Down  (making the output voltage which is lower than the input voltage) and moreover Inverting __ Designed by Seiichi Inoue

Synchronizing Firefly -  This circuit simulates a firefly with a tiny microcontroller.  If put together with other fireflies, they will flash randomly.  But after some time they will start to interact with each other and the flashes will start synchronize until all fireflies flash at once.   __ Designed by Alexander Weber

   <<<         This is the last page of Q - S

Microprocessors:  #'s - B      C - F      G - K      L - M      N - P      Q - S      T - Z


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