SD/SDHC Card Interfacing with
ATmega8 /32 (FAT32 implementation) - Hi friends, Here is
my project on interfacing of SD Card (microSD). microSD cards are available very cheap nowadays, a great option
for having a huge memory in any embedded system project. It is compatible with SPI bus, so the interfacing is
easy. . . .
Sega 3D Glass Interfacing Circuits - . . .
Selection of MOSFETs in Switch Mode DC-DC
Converters/ AB-8 - Fairchild App Note. . .
Self-modifying code extends addressing mode - 12/17/98 EDN
Design Idea (File contains many circuits. Scroll to find this one.) As just about any assembly-language
programmer knows, self-modifying code (SMC) is usually undesirable, unintentional, and destructive. However, the
SMC routine in Listing 1 is extremely useful to extend the indexed, 16-bit offset addressing mode of the
venerable HC05 µC from 8 bits, or 256 locations, to the full 13-bit (8-kbyte) memory address space that the µC’s
architecture supports. . . . [by Paul Sofianos, Motorola Inc, Tempe, AZ]
Self-Powered Soundcard - . . .
Serial Controller IC Interfaces with ADSP2100A - 03/28/96 EDN Design Idea The ADSP2100A DSP chip from Analog Devices has no serial port. To
interface the device with a PC through the RS-232C port or to another serial line, you need to add a serial
communications port to the DSP card. You can add this p. . . [by DVL Prasad and CA Jalaludeen, NPOL, Kochi,
India]
Serial Data Multiplexer - Embedded computers and PDAs and have become popular as "brains" for robotics projects. They
usually have an RS-232 serial port that interfaces easily to a slave IO controller. Unfortunately a single serial
port can be a severe limitation if a user wishes to connect multiple serial devices. This page describes one
method to switch serial signals between a host device, such as a PDA or PC, and a slave IO controller or one
other auxillary device with a serial interface. . . [Acroname Inc.]
Serial Infrared Remote Controller - a simple, cheap device that can be connected to any serial port to control most components
that have infrared remote controls, includes schematics for receiver and transmitter . . . [John DuBois
designer]
Serial Interface & Bias Supply for Seiko-Epson
G1206b Dot Graphics Display - Serial LCD/VFD Controller is
a HD44870 based LCD/VFD controller via RS-232. The control command is compatible with Matrix-Orbital's LCD
module. So, you can use any MO friendly software to control this baby such as LCDC. . . . [From Dick Cappels'
project pages]
Serial interface adapter for iPod Linux - . . .
Serial LCD for MicroControllers Using Only 3 Pins - Connect an LCD to your microcontroller to make it easy to develop and debug your
application. You can choose which PIC I/O pins you want to use for the interface, and any HD44780 compatible LCD
can be controlled. . . . [designed by Peter Jakab]
Serial Port A/D Converter - This circuit is a simple 8-bit
analogue to digital converter circuit which is connects to PC serial port. The circuit is based on TLC548
A/D-converter chip (might be hard to get nowadays, Texas Instruments makes this IC) , which is an A/D-converter
with serial output. The output of the TLC548 is not directly suitable for standard serial data reception, so this
circuit . . .
Serial Port Controller Infrared Transmitter
PIC16f628 - . . . [Peter Jakab, Electrical Engineer,
Engineer of Informatics]
Serial Port Drives 12 Bit ADC
- 10/12/95 EDN Design Idea The circuit in Fig 1 performs a task that a microcontroller usually performs, that
of driving a 12-bit ADC from the serial port of a PC. Power consumption is low; the 2-mA operating current drops
to only 15 µA in shutdown. . . . [by John Wettroth, Maxim Integrated Products, Sunnyvale, CA]
Serial Port I/O Expander - This article shows how to use the PIC16F84 microcontroller with PicBasic to design a quick &
effective, serially controlled, I/O-Expander. Using PicBasic makes developing handy single-chip devices like this
extremely simple. . . [Copyright Reynolds Electronics]
Serial Port I/O Interface - This is a simple I/O interface using an AVR microcontroller. The i/o pins are controlled by
the AVR and can be used to drive LEDs, control RC servos, etc. Using the attached relay circuit it can also be
used to control relays. This schematics also provides a programming interface. . . .
Serial Port
Professional PIC Programmer - Serial Port Professional PIC
Programmer. Here is the list of currently supported flash devices from Microchip PICmicro 12F and 16F product
lines: 12F629. . .
Serial Port Professional PIC
Programmer - The PIC programmer project presented here is
intended to be used by more experienced developers who already have access to a simple PIC programmer, because
the programmer hardware is built around one 16F627 (A) or 16F628 (A) microcontroller that has to be preprogrammed
with firmware. The presented solution uses PC's serial port for reliable communication between the programming
software and 'intelligent' PIC programmer hardware. . . .
Serial Port Routines Without using the RTCC - Application Note Published 26-Aug-97. . . [Microchip]
Serial Port Utilities Implementing Table Read & Table Write - Application Note Published 26-Aug-97. . . [Microchip]
Serial servo controller for interfacing hobby
servos via RS232 to a PC - . . .
Serial to parallel converter-connect
a large number of digital outputs to a PC parallel port -
. . .
Serial-Controlled Postage Stamp Computer Governs Process - 10/13/94 EDN Design Idea iemens has extended its microcontroller-development tool support
with the “Big Box” programme—bundled offerings that provide tool chains from a number of third-party suppliers.
The tool set targets a number of “typical” application areas. The company integrates the tools through a standard
interface and includes training and support from the tools’ manufacturers. Part of Siemens’ “Space” programme,
the Big Box covers 8-, 16-, and 32-bit microcontrollers. . . . [by Steven C Hageman, Calex Manufacturing Co Inc,
Concord, CA]
Serial-interface infrared remote control - This is a simple, cheap device that can be connected to any serial port to control most
components that have infrared remote controls. I designed and built it (on a solderless breadboard) in 1991. In
1992 I wrote a lengthy description of it for an electronics class. In 1994 I finally designed a PC board for it,
using a free, X-based PC board design program called pcb, and in 1995 I etched several of the boards and made the
final product. . . [John DuBois designer]
Series Resistors, Body
Capacitance Scan 16 Buttons With Two MCU Pins - In an
application using a pin-limited microcontroller (MCU) , I needed to scan an array of 16 buttons. The technique I
used involved a series string of resistors of identical value connected between two bidirectional pins of the. .
. [Dave Vanden Bout-Circuit Designer]
Shared-Memory Interface Eliminates Arbitration - 08/01/96 EDN Design Idea The design of a shared-memory interface for the ISA bus commonly
requires a relatively complex arbiter, which grants access to an onboard device or to the ISA bus. If an on-board
device requires only infrequent accesses, the circuit in Figure 1 can eliminate the need for the arbiter. Local
access occurs during the execution of an ISA refresh cycle, thereby eliminating any risk of contention. The RFRSH
line signals the beginning of the refresh cycle; as long as this signal is active, the local device has full
control of the memory. . . . [by Piotr Mazur, Wikom, Warsaw, Poland]
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