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Currently, the most used serial communication protocols to exchange information between different electronic embedded devices are the SPI and I2C. This paper describes the development and implementation of these protocols using a FPGA card. For the implementation of each protocol, it was taken into account different modes of operation, such as master/slave mode sending or pending data mode. For the implementation of the I2C protocol was necessary to perform a tri-state buffer, which makes a bidirectional data line for a successful communication between devices, allowing to take advantage of these sources provided by the FPGA. Verilog is a hardware description language better known as HDL and it was used in the work to implement and simulate these communication protocols with the software version 14.7 of Xilinx ISE Design Suite.

A quasi-floating gate (QFG) “super-follower” is presented. The high resistance used by the QFG transistor is constructed by two diodes connected back-to-back, leading to a simple-, temperature-stable- and small-area solution. Expressions for the behavior of the follower are introduced and verified by circuit simulations in LTSPICE using 0.5[Formula: see text][Formula: see text]m CMOS process models, which show an improved performance of the proposed circuit with respect to the original super-follower. To prove the principle, a test cell was fabricated in the same 0.5[Formula: see text][Formula: see text]m CMOS technology and characterized. Measurement results show a gain-bandwidth product of 10[Formula: see text]MHz and power consumption of 120[Formula: see text][Formula: see text]W with a 1.5[Formula: see text]V single supply.

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Los robots colaborativos son de interés en variadas áreas de control, especialmente en la manipulación, desarrollo y precisión de tareas programadas; parte de su funcionalidad radica, entonces, en la plataforma de comunicación entre ellos. En este artículo de investigación se presenta el desarrollo de una plataforma para la comunicación entre robots colaborativos empleando dispositivos lógicos programables CPLD (Complex Programmable Logic Device), sensores ultrasónicos y sensores infrarrojos con la finalidad de que realicen múltiples tareas. Según la forma en que sean programadas, estas plataformas robóticas pueden apoyarlas empresas a enfrentar dificultades tales como los altos costos derivados de otras plataformas robóticas convencionales; asimismo, pueden orientarse a facilitar tareas cotidianas —como la transportación de objetos o el apoyo en labores domésticas—que se pueden automatizar de manera eficaz.