Circuits & Schematics Microcontrollers Usage: clock - 4

31. One I/O line drives shift register with strobe. Part 2 - How it works
    Circuits Microcontrollers Usage
    .. Mijanovic, Nedjeljko Lekic Part 1 - Schematic Let us look at the first shift register. The microcontroller drives CLOCK input directly. The same signal passes through the RC filter and drives DATA input D (Figure 5). The RC filter ...
    11-05-2013

32. One I/O line drives shift register with strobe. Part 1 - Schematic
    Circuits Microcontrollers Usage
    .. other words, they can be used as (additional) general purpose outputs. Today there are shift registers that have DATA and CLOCK inputs only, like 74HC164 , and shift registers with same inputs plus STROBE control input, like 74HC4094 or ...
    13-04-2013

33. Voice Shield for Arduino
    Circuits Audio MCU Open-Source Platforms Microcontrollers Usage Arduino Winbond ISD1790PY
    .. × 100 V C11 2.2 uF × 63 V LD1 LED 3 mm Red U1 ISD1790PY P1 P7 Microswitch Recording time is determined by the clock frequency of ISD1790PY internal oscillator, which marks the sampling; such sampling frequency is defined by the ...
    24-03-2013
34. Simplecortex - Arduino compatible ARM Cortex development board. Part 1 - Hardware
    Circuits MCU Open-Source Platforms Microcontrollers Usage Arduino BRC Electronics SimpleCortex
    .. memory mappings, register addresses etc. The NXP LPC1769 is an ARM 32-bit Cortex-M3 Microcontroller with MPU. Features: CPU clock up to 120MHz, 512kB on-chip Flash ROM with enhanced Flash Memory Accelerator In-System Programming (ISP) and ...
    14-02-2013
35. Linearize optical distance sensors with a voltage-to-frequency converter
    Circuits Automation Measurement Microcontrollers Usage
    .. response: where S F is a coefficient. The pulse period is The microcontroller defines the period as a number of internal clock pulses, The period of clock pulses is 0.5 usec, and it defines the values of the frequency-determining ...
    10-02-2013
36. A DIY indoor thermometer plus hygrometer with adaptive brightness control implemented to 7-segment LED displays
    Circuits Measurement Microcontrollers Usage
    .. and relative humidity. The microcontroller used in this project is PIC16F688 from Microchip , and it runs at 4 MHz clock generated from its internal source. A separate display driver chip ( MAX7219 ) from Maxim is used to control ...
    18-01-2013
37. AD9833-based USB Function Generator
    Circuits Oscillators Measurement Microcontrollers Usage
    .. The parts The integral part of this design is ofcourse the DDS chip, the AD9833 by Analog Devices . The chip has a 25MHz clock input, an internal phase locked loop, a sine lookup table and an ADC. By controlling it with it's SPI ...
    15-10-2012
38. Low cost Ethernet shield with ENC28J60
    Circuits Interfaces MCU Open-Source Platforms Microcontrollers Usage Networks Arduino ENC28J60
    .. the Arduino. MISO is the output data of the slave device and the input of Arduino, while MOSI is the opposite; SCK is the clock that marks the two-way communication on the SPI bus and RESET the reset line, which is also connected to a ...
    23-08-2012
39. Intelligent temperature monitoring and control system using AVR microcontroller. Part 1 - Schematic
    Circuits Automation Microcontrollers Usage
    .. Intelligent temperature controller For this design I used an Atmel AVR ATMega32L AVR microcontroller with an internal clock frequency of 8MHz, a 4×20 LCD for presenting data visually, a 4-button input interface, a tiny piezo ...
    14-08-2012
40. Serial four digit 7-segment LED display module
    Circuits MCU Open-Source Platforms Microcontrollers Usage Arduino
    .. module can be interfaced as a SPI slave device. In that case the SPI signal lines SDO (serial data out), SCLK (serial clock), and SS (slave select) from the microcontroller can be directly connected to the MOSI, CLK, and CS pins ...
    30-06-2012

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