Wiring the PCF8574AP 8bit Bidirectional IO Expander Driven i2C Communication Bus / SPI

This is the PCF8574AP consists of an 8-bit quasi-bidirectional port and an i2C Serial Bus Interface. The PCF8574AP has a low current consumption and includes latched output with HIGH consumption and include latched output with high current drive capability for directly driving LEDS. It also possesses an interrupt which can ...
Read More

How to Place/Connect a Pull Up Resistors on Chip

A pull up resistor is a resistor that works the chip normally HIGH and change it to LOW when switched on, Pull-Up or Pull-Down resistor mostly they are connected to the pins of the chip so that they can define the state of the pins. The Pins of the chip ...
Read More

How I2C/I²C Serial Bus Communication Protocol Works?

Who develop I²C? In early 1980's PHILIPS designed & develop a new type of BUS standard named I2C for easy communication between integrated circuits especially in TV circuits, which exist on the circuit board. The name I²C translates intro (Integrated Circuits Bi-Directional 2 wire BUS standard for efficient inter IC ...
Read More

How SPI, QSPI Serial to Peripheral Interface Woks ?

The SPI(Serial to Peripheral Interface) develop by Motorola and later adopted by Microwire of National Semiconductor and other companies. SPI is a hardware / firmware communication protocol or sometimes Engineers called it a "four wire serial bus" communication. The SPI Bus is a 4 wire serial communication interface used by ...
Read More