World's Lowest Voltage Level Shifting GPIO with LED Driver and Keypad EngineDesigned by AtomSoftTech in United States of America
What is it? The SX1507, SX1508 and SX1509 are complete ultra low voltage 1.2V to 3.6V General Purpose parallel Input/Output (GPIO) expanders ideal for low power handheld battery powered equipment. Th…Read More…
The SX1507, SX1508 and SX1509 are complete ultra low voltage 1.2V to 3.6V General Purpose parallel Input/Output (GPIO) expanders ideal for low power handheld battery powered equipment. This family of GPIOs comes in 4-, 8-, 16-channel configuration and allows easy serial expansion of I/O through a standard 400kHz I2C interface. GPIO devices can provide additional control and monitoring when the microcontroller or chipset has insufficient I/O ports, or in systems where serial communication and control from a remote location is advantageous
A customer asked me to look into this and boy am i glad i did. These chips are so cool and simple to use especially when using the Arduino Library. In a matter of seconds i can blink and fade a led.
It is CHAINABLE! Meaning you can connect up to 4 of these together since its I2C and has 2 Address Lines. Thats a total of 64 leds controlled via 2 I2C pins or a nice sized keypad. It fits on a breadboard with enough space for at least 2 wires on each pin. Used along with my TinyLEDs its a cinch to test.
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Tom | March 18, 2015
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