Talking Phone Dial Monitor:  (Electronic circuit added 4/05)

Talking PIC   Based on SP0256:  (Electronic circuit added 7/03)

TB003: An Introduction to KEELOQ® Code Hopping Technical Brief:  Microchip Application Note - Published 8-Nov-04   (app note added 2/06)

TB004: Automatic Calibration of the WDT Time-out Period:  Microchip Application Note - Published 4-Nov-97   (app note added 2/06)

TB005: Using External RAM with PIC17CXX Devices:  Microchip Application Note - Published 4-Nov-97   (app note added 2/06)

TB008: TechBrief Tranformerless Power Supply:  Microchip Application Note - Published 26-Aug-97   (app note added 2/06)

TB011: TechBrief: Using SRAM with a PIC16CXX:  Microchip Application Note - Published 26-Aug-97   (app note added 2/06)

TB013: How to Implement ICSP using PIC16CXXX OTP MCUs:  Microchip Application Note - Published 14-Feb-00   (app note added 2/06)

TB015: How to Implement ICSP using PIC17CXXX OTP MCUs:  Microchip Application Note - Published 20-Oct-04   (app note added 2/06)

TB016: How to Implement ICSP using PIC16F8X FLASH MCUs:  Microchip Application Note - Published 15-Feb-00   (app note added 2/06)

TB017: How to Implement ICSP using PIC12C5XX OTP MCUs:  Microchip Application Note - Published 20-Oct-04   (app note added 2/06)

TB020: This technical brief describes how to use the PIC16C72 PICMASTER(R) emulator probe for PIC12C67X emulation.:  Microchip Application Note - Published 27-Mar-98   (app note added 2/06)

TB023: Serialized Quick Turn Programming SM (SQTPSM):  Microchip Application Note - Published 19-Sep-03   (app note added 2/06)

TB024: Downloading HEX Files to External FLASH Memory using PIC17CXXX PICmicro ® Microcontrollers:  Microchip Application Note - Published 6-Nov-98   (app note added 2/06)

TB025: Downloading HEX Files to PIC16F87X PICmicro ® Microcontrollers:  Microchip Application Note - Published 6-Nov-98   (app note added 2/06)

TB026: Calculating Program Memory Checksums using a PIC16F87X:  Microchip Application Note - Published 6-Nov-98   (app note added 2/06)

TB027: Simplifying External Memory Connections of PIC17CXXX PICmicro ® Microcontrollers:  Microchip Application Note - Published 23-Aug-99   (app note added 2/06)

TB033: Using a PIC16F877 to Develop Code for PIC16CXXX Devices:  Microchip Application Note - Published 25-May-99   (app note added 2/06)

TB043: KEELOQ® CRC Verification Routines:  Microchip Application Note - Published 8-Nov-04   (app note added 2/06)

TB045: KEELOQ® Manchester Encoding Receive Routines:  Microchip Application Note - Published 11-May-01   (app note added 2/06)

TB061: Bipolar PICmicro® Power Systems:  Microchip Application Note - Published 13-Aug-02   (app note added 2/06)

TB071: Converting from Motorola® HC08 to Microchip Assembler: A Quick Reference:  Microchip Application Note - Published 9-Jul-03   (app note added 2/06)

TB072: FLASH Memory Technology: Considerations for Application Design:  Microchip Application Note - Published 10-Jul-03   (app note added 2/06)

TB073: Selecting an MCP21XX Devicefor IRDA® Applications:  Microchip Application Note - Published 12-Aug-04   (app note added 2/06)

TB075: Clearing the Software Write-Protect Feature on the 24LCS52:  Microchip Application Note - Published 23-Feb-04   (app note added 2/06)

TB078: PLL Jitter and Its Effects in the CAN Protocol:  Microchip Application Note - Published 15-Jun-04   (app note added 2/06)

TB079: Programming Baseline Flash Devices with PICkit 1:  Microchip Application Note - Published 16-Feb-05   (app note added 2/06)

TB088: PIC16F639 Microcontroller Overview:  Microchip Application Note - Published 2-Dec-05   (app note added 2/06)

TB095: Modifying the PICDEM USB Board for PIC18 Full-Speed USB Microcontrollers:  Microchip Application Note - Published 4-Nov-05   (app note added 2/06)

TechBrief Tranformerless Power Supply:  Microchip Application Note - Published 26-Aug-97   (app note added 2/06)

TechBrief: Using SRAM with a PIC16CXX:  Microchip Application Note - Published 26-Aug-97   (app note added 2/06)

Temperature Controller Based on AT89CX051:  (Electronic circuit added 4/05)

Temperature Monitor/Controller: AVR 2313/DS1621:  (Electronic circuit added 7/03)

Temperature Sensitive Oscillator:  Temperature controlled based on AT89CX051 (Electronic circuit added 5/02)

Ten Tricks for Interfacing to the PIC16C508:  (Electronic circuit added 7/03)

TH7122 using an External Microprocessor Reference Oscillator (Ro):  Melexis Application Note  (Circuit / schematic design added 6/06)

The A-1 Robot :  This Robot is created using a Radio Shack project box. I have used many of the circuts from DiscoverCircuts.com with my ideas for AI-A-1.

The Agilent 34980A A Low Cost Alternative to VXI and PXI:  Agilent Application Note   (Circuit / schematic design added 6/06)

The COP444L Evaluation:  National Semiconductor - Application Note   (app note added 2/06)

The DP8344 BCP Inverse Assembler:  National Semiconductor - Application Note   (app note added 2/06)

The New MICRO-DAC Product Line for Microprocessor Systems:  National Semiconductor - Application Note   (app note added 2/06)

The New quad line feeder STLC5445 replaces the former isdn quad line feeder STLC5444:  AN1598  (Circuit / schematic design added 6/06)

The Quest for a New Generation Analyzer:  Agilent Application Note   (Circuit / schematic design added 6/06)

Theory and Application of the ML4821 Average Current Mode PFC Controller / AN-42030:  Fairchild Application Notes / (Circuit / schematic design added 6/06)

Thermoelectric Controller (scriptable Thermometer):  A unified thermometric controller that can be programmed with simple scripts, integrating the "classic" thermometer/controller pair. You can build a variety of simple machines with the same hardware and a different script : a charting thermometer, a vending machine that dials your number when empty, a leavening cell....   (added 09/05)

Third Generation Power Conversion Solution for Pentium II Motherboards / AN-57:  Fairchild Application Notes / (app note added 6/06)

This technical brief describes how to use the PIC16C72 PICMASTER(R) emulator probe for PIC12C67X emulation.:  Microchip Application Note - Published 27-Mar-98   (app note added 2/06)

Time Keeping using a COP800 Microcontroller:  National Semiconductor - Application Note   (app note added 2/06)

Tips on using 8pin AVRs:  This is an application notes for 8 pin tiny AVR.  (added 10/05)

TMC22x5y Input Data Ranges / AN-60:  Fairchild Application Notes / (Circuit / schematic design added 6/06)

TMPZ84C015 board:  TMPZ84C015 is one of the Toshiba TLCS-Z80 series microcontrollers. This is a TMPZ84C015 board that used Akizuki-denshi AKI-80 board kit.  (added 10/05)

TO-247 Package:  National Semiconductor - Application Note   (app note added 2/06)

Tony Nixons Pocket Programmer (PIC):  (added 09/05)

Total Power Conversion Solution for Pentium II Motherboards / AN-56:  Fairchild Application Notes / (Circuit / schematic design added 6/06)

Transil trisil comparison:  AN574  (Circuit / schematic design added 6/06)

TRIAC Control using the COP400 Microcontroller Family:  National Semiconductor - Application Note   (app note added 2/06)

Triggering a Logic Analyzer on Complex Physical Buses:  Agilent Application Note   (Circuit / schematic design added 6/06)

Trisil crowbar type protection diode:  AN320  (Circuit / schematic design added 6/06)

Troubleshooting and Design Tips for Fairchild Power Switch (FPStm) Flyback Applications / AN-4141:  Fairchild Application Notes / (Circuit / schematic design added 6/06)

TS5070/5071 combo ii Program and hybrid balance with monolithic slics:  AN293  TS5070 / 5071 COMBO II PROGRAMMINGAND HYBRID BALANCING WITH SOLID-STATE SLICS  (Circuit / schematic design added 6/06)

Tuning C Code with the STCC and #174 compiler:  AN1999 main routine calls funca with parameter x= 10 and funca performs two calls to funcb with parameters... (Circuit / schematic design added 6/06)

Two Chips Simplify Layout for High-End Embedded Control:  04/10/99 EDN-Design Ideas / (Circuit / schematic design added 6/06)  [Note:  File contains multiple circuits.  Scroll to find this one.]  If you are considering using one of the 32- or 64-bit RISC µPs from Integrated Device Technology (IDT), the company’s new RC32134 and RC64145 system-controller ICs (Picture) can make your job easier. The chips provide synchronous-DRAM, memory, and I/O control; a PCI interface; and peripherals, including UARTs, timers, and interrupt controllers. The 32134 for the RC32364 µP provides a glueless interface to DRAM and a 32-bit, 33-MHz PCI function. The 64-bit part supports a number of IDT’s 64-bit RISC µPs and provides a 32-bit, 66-MHz PCI function for higher bandwidth....

Two DDS ICs implement amplitude shift keying:  12/25/03 EDN Design Ideas  /  (added 1/05)  Many communications systems, including RFID systems and cable modems, use AM (amplitude modulation). This Design Idea shows how two DDS (direct-digital-synthesis) devices can implement AM and ASK (amplitude-shift keying) over a range of frequencies. The AD9834 complete 50-MHz DDS IC (Figure 1) has a current output, so you can easily sum the outputs of two or more of them by connecting them to a......

Two gates and a microprocessor form digital PLL:  04/14/05 EDN Design Ideas  / (added 5/05)  Low-frequency PLL needs just a processor and gates.

Two gates expand ASIC's memory-decoding range:  03/29/01 EDN-Design Ideas / (app note added 2/06)  Many electronic circuits implement chip-select lines on an ASIC. From the beginning of the design cycle, the chip selects, CS0 to CS4, have defined bases on the memory map (Figure 1). Adding functions to the product requires increasing the DRAM space. Now, you must redesign the ASIC so the chip select, CS1, can accommodate the new memory space of 04000000 to 0BFFFFFF.
The circuit in Figure 2 uses two external exclusive-OR gates to expand memory-address-decoding space for the CS1 signal from the initial range of 04000000 to 07FFFFFF to 04000000 to 0BFFFFFF. When address line A27 is low, exclusive-OR gates IC1A and IC1B allow A27 and A26 signals to pass through unchanged. In this case...

UL Isolated Self-Powered Sensing:  DN204 -  Design Notes (Linear Technology) (added 1/06)

Ultra Low-cost Programmer for AT90S family:  (Electronic circuit added 4/05)

Understanding and Eliminating EMI in Microcontroller Applications:  National Semiconductor - Application Note   (app note added 2/06)

Understanding Surface Mount:  Application Note - MiniCircuits.com  (Circuit / schematic design added 6/06)

Understanding the MCP250XX Devices:  Microchip Application Note - Published 9-Sep-02   (app note added 2/06)

Unused µC ADC pins find second life:  02/03/00 EDN - Design Ideas  /  (added 11/05)  Some PIC µCs, such as the 12C67X and 16C7X, have more than one analog input channel. If you don't need all the available channels, you can use the unused channels as general-purpose I/O. For example, you can use unused ADC pins for power-on status reading and as an output in normal operation. In Figure 1, the jumper selects a mode—the battery charge voltage, for example—by PIC software at power-on. At power-on, software configures the RAX line as an analog input and reads the voltage—for example, 1V at Digit 0 and 2V at Digit 1. The same RAX line also drives the base of a transistor through a 3V zener diode. At power-on, the voltage at the RAX input is insufficient to turn on the transistor. However, after using power-on-initialization software, you configure RAX as a digital output. Now, the low-impedance high/low voltage at RAX can override the bias voltage at the jumper to turn the transistor on and off....

Unused 8051 pin gets assignment:  01/04/96 EDN-Design Ideas / (app note added 2/06)

Updating DP83815 MacPHYTER Hardware Designs to DP83816 MacPHYTER-II:  National Semiconductor - Application Note   (app note added 2/06)

UPG2301TQ Application Information (8/1/04) :  Application Note - California Eastern Laboratories - Doc #958  (Circuit / schematic design added 6/06)

UPGA3Pulse Circuit Analysis:  MicroNote 602 from Microsem  (Circuit / schematic design added 6/06)

Upgrading from MK5021 to MK50H25:  Upgrading From MK5025 to MK50H25 by Darin Kincaid...  granting the bus to the MK50H25. The glitch will occur approximately 15-30 nS after the rising edge of SYSCLK.... ... (Circuit / schematic design added 6/06)

Upgrading from MK5025 to MK50H25:  Upgrading From MK5025 to MK50H25 by Darin Kincaid...  granting the bus to the MK50H25. The glitch will occur approximately 15-30 nS after the rising edge of SYSCLK.... ... (Circuit / schematic design added 6/06)

Upgrading from MK5027 to MK50H27:  Upgrading From MK5027 to MK50H27 by Darin Kincaid...  (Circuit / schematic design added 6/06)

USB - extending the current and voltage capability on the ST7265 vddf supply:  AN1529 This AppNote describes two such solutions, based on practical implementations : A 3.3V / 500mA power supply for driving a Microdrive Storage media on the ST7265x EVAL / MS " 5in1 " USB Mass Storage evaluation board from STMicroelectronics.... Two... (Circuit / schematic design added 6/06)

USB - ST92163 emulator and eprom footprint compatibility guidelines:  AN981 Th e purpose of This AppNote is to describe the means of using ST92163 devices (E PR O M or OTP) or emulators.... (Circuit / schematic design added 6/06)

USB Mass Storage Deviceusing a PIC MCU:  Microchip Application Note - Published 30-Aug-05   (app note added 2/06)

USB-AVR 323 Board:  schematic for an ATMega323 boards The main interface to this board is USB via the FTDI USB-Serial converter chip (8/05)

Use 8051's power down mode to the fullest:  07/06/00 EDN Design Ideas /  (app note added 2/06)

Use the PSD813f to minimize signal conditioning system hardware:  AN1174 PURPOSE This AppNote focuses on the Signal Conditioning Marketplace and how the Flash-based PSD813F family greatly simplifies the hardware design effort while adding enhanced features such as Concurrent Memory and In-System-Programming for easy... (Circuit / schematic design added 6/06)

Uses and Advantages of “MERA” Dual Matched MMIC Amplifiers  AN-60-032:  Application Note - MiniCircuits.com  (Circuit / schematic design added 6/06)

Using a PIC16F877 to Develop Code for PIC16CXXX Devices:  Microchip Application Note - Published 25-May-99   (app note added 2/06)

Using an I2C Serial EEPROM with a Basic Stamp 2:  (Electronic circuit added 7/03)

Using Built-In Self-Tests   (BIST) with SCAN50C400:  National Semiconductor - Application Note   (app note added 2/06)

Using COP800 Devices to Control DC Stepper Motors:  National Semiconductor - Application Note   (Circuit / schematic design added 6/06)

Using Dynamic RAMs with Series 32000 CPUs:  National Semiconductor - Application Note   (app note added 2/06)

Using Dynamic Voltage Positioning to Reduce the Number of Output Capacitors in Microprocessor Power Supplies:  National Semiconductor - Application Note   (app note added 2/06)

Using External Ram with PIC17cxx Devices:  Microchip Application Note - Published 4-Nov-97   (Circuit / schematic design added 6/06)

Using KEELOQ® to generate Hopping Passwords:  Microchip Application Note - Published 26-Aug-97   (app note added 2/06)

Using Multiple 34980A / 34970A Mainframes for Faster Scanning:  Agilent Application Note   (Circuit / schematic design added 6/06)

Using Offsets to Avoid False Triggers:  Agilent Application Note   (Circuit / schematic design added 6/06)

Using PIC16C5x Microcontrollers as LCD Drivers:  Microchip Application Note - Published 26-Aug-97   (app note added 2/06)

Using PICmicro® MCUs to Connect to Internet via PPP:  Microchip Application Note - Published 22-Nov-99   (app note added 2/06)

Using the Capture Module:  Microchip Application Note - Published 26-Aug-97   (app note added 2/06)

Using the Catalog Specifications to Determine MMIC Reliability  AN-60-030:  Application Note - MiniCircuits.com  (Circuit / schematic design added 6/06)

Using the DSPIC30F for Sensorless BLDC Control:  Microchip Application Note - Published 27-Jun-05   (app note added 2/06)

Using the EUSART on the PIC16F688:  Microchip Application Note - Published 8-Feb-05   (app note added 2/06)

Using the MCP2120 Developer's Board of IR Sniffing:  Microchip Application Note - Published 20-Apr-04   (app note added 2/06)

Using the MCP2510 CAN Developer's Kit:  Microchip Application Note - Published 27-Jul-04   (app note added 2/06)

Using the Microchip Endurance Predictive Software:  Microchip Application Note - Published 26-Aug-97   (app note added 2/06)

Using the PIC16F639 MCU for Smart Wireless Applications:  Microchip Application Note - Published 10-Nov-04   (app note added 2/06)

Using the PICmicro MSSP Module for I2C Communications:  Microchip Application Note - Published 16-Aug-00   (app note added 2/06)

Using the PICmicro SSP for Slave I2C Communication:  Microchip Application Note - Published 7-Aug-00   (app note added 2/06)

Using the ST7 USB device firmware upgrade development kit (dfu-dk):  AN1603 This AppNote describes how to use the ST7 USB DFU PC development kit (DFU-DK). It begins with a presentation of the software architecture.... This section provides a list of all the DFU-DK files referred to in this application note.... - Lib subdirectory... (Circuit / schematic design added 6/06)

V25 board:  V25 is one of the NEC V series microcontrollers. It is V30 cored microcontroller that integrated with sirial ports, parallel ports, timers, DMAC and others.  (added 10/05)

V53A board:  This is a microcomputer board used V53A. V53A is one of the NEC V series microcontrollers. It is integrated on a chip V33A core, 8259, 8253, 8251, 8271 and others. V33A is very fast that same as 80286 procesor.  (added 10/05)

VF Control of 3-Phase Induction Motors using PIC16F7X7 Microcontrollers:  Microchip Application Note - Published 26-May-04   (app note added 2/06)

Victoria TAFE Programmer (based on AT89C2051):  (Electronic circuit added 7/03)

Vipower : vnh2sp30 for window lift with antipinch routine:  AN2095  (Circuit / schematic design added 6/06)

Voice Storage Chips Talk to Each other:  10/05/98 EDN-Design Ideas / (Electronic circuit design added 02/05)  

Voltage Mode Control IC / AN-4128:  Fairchild Application Notes / (Circuit / schematic design added 6/06)

Way Small Web Server:  (Electronic circuit added 7/03)

Weighscale:  (Electronic Schematic / circuit added 4/02)

Wideband Low Distortion Techniques - App Note 17:  Apex Microtechnology Corp - App Note - (Circuit / schematic design added 6/06)

Wireless Home Security Implementing KEELOQ® and the PICmicro® Microcontroller:  Microchip Application Note - Published 12-Oct-99   (app note added 2/06)

Wireless local network for PalmPilot (large PDF):  (Electronic circuit added 4/05)

Wisp628 ISP Microchip PIC Programmer:  (Electronic circuit added 7/03)

WLoader: PIC16F877 application loader/Bootloader:  (Electronic circuit added 4/05)

X-10 Home Automation using the PIC16F877A:  Microchip Application Note - Published 30-Oct-02   (app note added 2/06)