MAC Address Programming for DP83816 MacPHYTER-II and DP83815 MacPHYTER:  National Semiconductor - Application Note   (added 2/06)

Mac Serial Port (RS-422 DIN-8) to RS-232 DB-25:  (Electronic circuit added 4/05)

Macrovision removal:  (Electronic circuit added 4/05)

Mains Clock Controller using AT89C2051 2:  12/04/97 EDN-Design Ideas / (Circuit / schematic design added 6/06)  

Mains Clock Controller using AT89C2051:  (Electronic circuit added 7/03)

Mains Operated Christmas Star:  (Circuit / schematic design added 6/06)

Make a DAC with a microController's PWM timer:  09/05/02 EDN Design Ideas  /  (added 1/05)  Many embedded-microcontroller applications require generation of analog signals. An integrated or stand-alone DAC fills the role. However, you can often use PWM signals for generating the required analog signals. You can use PWM signals to create both dc and ac analog signals. This Design Idea shows how to use a PWM timer to simultaneously create a sinusoid, a ramp, and a dc voltage....

Make noise with a PIC :  08/07/03  EDN-Design Ideas / (Electronic circuit added 10/03) Building a stable noise generator for audio-frequency purposes requires only a few components. The circuit in Figure 1 relies on linear-feedback shift registers and some simple software. An eight-pin Microchip (www.microchip.com) PIC12C508 controller (IC2) with a short program generates pseudorandom noise at its output pin, GP0....

Manipulating the Stack of the PIC18 Microcontroller:  Microchip Application Note - Published 21-Mar-02   (added 2/06)

Mastering the PIC16C7X A/D Converter:  Microchip Application Note - Published 10-Apr-02   (added 2/06)

Measure Tilt using PIC16F84A and ADXL202:  Microchip Application Note - Published 18-Aug-99   (added 2/06)

Measuring Characteristic Impedance of Short Rambus Motherboard Traces and Small-Outline RIMMs:  Agilent Application Note (app note added  6/06)

Meeting the Challenge of Computer System Validation:  Agilent Application Note (app note added  6/06)

Micro SMDxt Wafer Level Chip Scale Package:  National Semiconductor - Application Note   (added 2/06)

Microchip PIC ICSP implementation:  (Electronic circuit added 7/03)

Microchip Stack for the ZigBee Protocol:  Microchip Application Note - Published 5-May-05   (added 2/06)

MicroController Becomes multifunctional:  10/25/01 EDN Design Ideas  /  (added 1/05)  A microcontroller, by default, can execute only one program at a time. What do you do if, in a given project, you need to perform more than one operation at a time? Add more microcontrollers to the design? In certain cases it's unnecessary. Consider a real-life situation (Figure 1). The microcontroller constantly generates on its Pulse output pin a sequence of pulses

Microcontroller controls multichemistry battery charger:  09/28/00 EDN Design Ideas /  (added 2/06) 

MicroController directs supply sequencing and Control:  05/29/03 EDN Design Ideas  /  (added 1/05)  With the proliferation of dual-voltage architectures and multiprocessor boards, even simple applications can require several processor voltage rails. With each processor having its own power-up and -down requirements, power-rail sequencing and control can become a complex task. The challenge for power-supply designers is to consider each processor's timing and voltage requirements and assimilat......

MicroController discerns addresses in RS 485 systems:  11/08/01 EDN Design Ideas  /  (added 1/05)  One of the many benefits of using the RS-485 data-interface system, unlike the RS-232 system, is its ability to implement multidrop networks. Such networks usually carry 9-bit data words, in which the ninth (parity) bit identifies each word as address or data. When using small microcontrollers without a hardware UART, such as IC1 in Figure 1, designers must decide whether to add an exte... ...

Microcontroller eliminates offboard EEPROM with virtual-EEPROM routines:  05/10/01 EDN-Design Ideas  / (added 2/06)

MicroController emulates numerically Controlled Oscillator:  02/21/02 EDN Design Ideas  /  (added 1/05)  Microcontrollers commonly add intelligence or digital functions to products, but they can also provide a variety of analog signals. An 18-pin PIC 16C54 microcontroller, combined with an inexpensive, 8-bit DAC and a simple lowpass filter, can generate sine waves from dc to approximately 50 kHz with a tuning resolution of 24 bits. ...

MicroController Interface for 5KWatt Microwave oven:  (added 8/02)

Microcontroller Interface to the ADC12038 Families:  National Semiconductor - Application Note   (added 2/06)

MicroController Makes Effective Frequency Counter:  11/23/00 EDN-Design Ideas / (added 5/03)

MicroController MIDI interface:  (Electronic circuit added 4/05)

Microcontroller multiplexes DIP switches to I/O port:  02/17/00 EDN-Design Ideas / (added 2/06) 

MicroController or DSP circuit Controls on/off function:  11/13/03 EDN Design Ideas  /  (added 1/05)  In many applications, a single on/off button switches the power supply on or off. Usually, the system switches off regardless of the processing function or workload the microcontroller or DSP circuit is currently handling. The small circuit in Figure 1 is intended to make the microcontroller or DSP circuit the master over this on/off function....

Microcontroller protects DC Motor:  02/17/05 EDN Design Ideas  / (added 2/06)  Although any overloaded dc motor can draw excessive current and sustain damage, a cooling fan's motor is particularly vulnerable due to fouling by dust, insects, or misplaced objects. A few fans include built-in overload protection, and others can use an external warning device, such as Microchip's TC670 fan-failure detector.

MicroController provides SRAM Battery Backup:  06/26/03 EDN Design Ideas  /  (added 1/05)  To maintain content in the event of power loss, many designs that include SRAM require a dedicated device that can automatically switch from a standard power supply to battery operation. Microcontrollers seldom find use in power-switching applications. Because microcontrollers typically operate from the primary power supply, they stop execution if that supply drops, thereby making it impossible......

Microcontroller provides timer function:  01/04/01 EDN Design Ideas /  (added 2/06) 

MicroController selects minimum/maximum value:  09/20/01 EDN Design Ideas  /  (added 1/05)  Microcontroller-based systems for measurement, sensor-data processing, or control, sometimes require you to determine a maximum or minimum data value. For example, in an object-detection system, such as a radar or sonar system, the microcontroller receives echo signals from multiple targets and then must select the closest one; in other words, it must determine the minimum distance. ...

MicroController Sensor and Actuator Interfaces:  (Electronic circuit added 7/03)

Microcontroller takes control of comparator:  09/01/00 EDN Design Ideas /  (added 2/06) 

MicroController Watches Controls AC Power:  06/22/95 EDN-Design Ideas -- circuit allows an isolated microcontroller to both sense and control ac power to an externally plugged-in device (added 6/03)

Microcontroller's DAC Provides code analysis:  04/14/05 EDN Design Ideas  / (added 2/06)  Scope plus DAC gives insight into software code.

Microprocessor based dual timer features four outputs:  06/09/05 EDN Design Ideas  / (added 2/06)   Simple code, switches yields two timers in microcontroller.

Microprocessor Core Supply Voltage Set by I2C™ Bus Without VID Lines:  DN279 -  Design Notes (Linear Technology) (added 1/06)

Microprocessor linear potentiometer deliver echo pulses:  05/12/05 EDN Design Ideas  / (added 2/06)  Simulate radar and sonar returns with simple circuit.

Microprocessor RS 232 Reset:  (Electronic circuit added 7/03)

Microprocessor using Xilinx FPGA:  (Electronic circuit added 4/05)

Micro-Spy with FETs:  (Electronic circuit added 4/05)

Micro-Spy with TTL:  (Electronic circuit added 4/05)

Micro-Spy with USW:  (Electronic circuit added 4/05)

Microstepping with PBM3960 and TEA3718:  (Electronic circuit added 4/05)

Migrating Designs from PIC16C74A/74B to PIC18C442:  Microchip Application Note - Published 28-Sep-99   (added 2/06)

Migrating from the TMC2490/TMC2491 to the TMC2490A/TMC2491A / AN-51:  Fairchild Application Notes (app note added  6/06)

MIL-PRF-19500 Qual Chips vs. MIL-PRF-38534:  MicoNote 60 from Microsemi  (Circuit / schematic design added 6/06)

Miniature power splitters  AN-10-002:  Application Note - MiniCircuits.com  (Circuit / schematic design added 6/06)

Minimize communication time between small microcontrollers:  03/29/01 EDN-Design Ideas / (added 2/06)

ML4423 Application Guidelines / AN-42037:  Fairchild Application Notes (app note added  6/06)

ML4824 Combo Controller Applications / AN-42009:  Fairchild Application Notes (app note added  6/06)

ML65244, ML65245 and ML65541 Ultra Fast Octal Buffer/Transceiver Family / AN-42005:  Fairchild Application Notes (app note added  6/06)

MMC to PIC16F876 Circuit Diagram:  (Electronic circuit added 7/03)

MNA, Low Profile, Low Cost, Fully Integrated Monolithic Microwave Amplifiers  AN-60-016:  Application Note - MiniCircuits.com  (Circuit / schematic design added 6/06)

Modifying PIC16C54A Code for the PIC16C58A:  Microchip Application Note - Published 26-Aug-97   (added 2/06)

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

Modular Mid-Range PICmicro® KEELOQ® Decoder in C:  Microchip Application Note - Published 7-May-01   (added 2/06)

Modular PICmicro® Mid-Range MCU Code Hopping Decoder:  Microchip Application Note - Published 16-Mar-01   (added 2/06)

Most often asked questions:  Application Note - MiniCircuits.com  (Circuit / schematic design added 6/06)

Motorola 68HC11 evaluation Board:  (Electronic circuit added 4/05)

Motorola 68K SBC (single Board computer):  (Electronic circuit added 4/05)

MPL PHY Layer Overview:  National Semiconductor - Application Note   (added 2/06)

MPU temperature meter #2:  Multi point diode temperature meter to replace thermister temperture meter. This is for diode temperture sensors icludes on-die thermal diode of micro-processor.  (added 10/05)

MPU temperature meter:  Multi point temperature meter which displays tempertures to an LED display with time divided. This is good for monitoring temperature of PC components.  (added 10/05)

Multi Chip Programmer:  (added 10/02)

Multi-chip Programmer for PIC microControllers:  (Electronic circuit added 4/05)

Multimedia Electronic Crib:  microcontroller based light controller which generates sequence of day-night with light fading, optional serial control interface, based on 87C51 (Electronic Schematic / circuit added 4/02)

Multi-Tasking on the PIC16F877 with the Salvo RTOS:  Microchip Application Note - Published 30-Aug-01   (added 2/06)

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

Night Light Saver (PIC12C508):  (Electronic circuit added 7/03)

Nixie Clock (PIC16F876):  (Electronic circuit added 7/03)

Off the shelf ICs make 10 bit convolver:  12/19/96 EDN-Design Ideas / (added 2/06)

Off the shelf MMIC Suits mixer applications :  02/02/98 EDN-Design Ideas  / (added 2/06)  

One MicroController Serves Multiple External Interrupts:  02/01/01 EDN-Design Ideas / (added 05/03)

Optimizing LNA Performance For CDMA Application Using Nonlinear Simulator (6/24/02) :  Application Note - California Eastern Laboratories - Doc #955  (Circuit / schematic design added 6/06)

Optimizing Read-Range of the 13.56 MHz Demonstration Reader:  Microchip Application Note - Published 20-Dec-99   (added 2/06)

Oscillator Characteristics of COPS Microcontrollers:  National Semiconductor - Application Note   (added 2/06)