- Stock: Out Of Stock
- Brand: xcluma
- Model: BE-002811
- Weight: 4.00g
- SKU: BE-002811
- MPN: BE-002811
Description
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The PCF8575 is controlled through an I2C interface and features 16-bits
of quasi-bidirectional input/output pins. On board 3.3V level converter
circuit, if you do not solder VCC-VDD pad, the PCF8575 level is 3.3V.
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If you solder it, the level will be the same with VCC.
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The module connects via the I2C bus to your Microcontroller and offers
I2C address selection by closing solder jumpers on the bottom side (base
address is 0x20).
·
You can either use it on 3.3V or 5V thanks to its on-board LDO and level
shifter. The VDD pin is the power supply for 5V, the VCC pin is the 3.3V output
voltage of the LDO.
·
If you use it as 5V device, you supply 5V on VDD. If you use it as 3.3V
device, you supply 3.3V to the VCC pin and close the solder jumper VCC-VDD on
the bottom side.
·
In a mixed mode, with 5V GPIO ports but connected to a 3.3V
Microcontroller, you supply 5V to VDD but leave the VCC-VDD jumper open.
Features
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Working voltage: 2.5 - 5.5VDC
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Working current: 100mA(MAX)
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I2C address: 0x20(default), can be modified by soldering A1 and A2
selection pads.
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16 individually addressable pins.
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Each pin configurable for input or output
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Open-drain interrupt output pin for input change interrupt.
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UNO available library: PCF8575
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Suitable for UNO R3 and other MCU to control simple relay, buzzer,
button, led.