ماژول I2C IO EXPANDER PCF8574:
This module (HCMODU0120) is a breakout board for the PCF8574 8-bit input/output (I/O) expander IC. Using this module you can expand the available digital I/O pins of your microcontroller via its serial I2C interface. The device features an 8-bit quasi-bidirectional I/O port (P0–P7), including latched outputs with high current drive capability for directly driving LEDs. Each quasi-bidirectional I/O can be used as an input or output without the use of a data-direction control signal.
۳ On-board jumpers allow selection of up to 8x I2C addresses meaning that up to 8 modules (64 I/O pins) can be connected to same I2C interface. The module also features convenient input and output headers at each end so that additional modules can simply be daisy-chained without the need for additional wires etc.
If you intend to use this module with a standard Arduino board please don’t forget to download our exclusive HCPCF8574 library and example sketches which are fully compatible with this module.Product code: HCMODU0120
۲٫۵V to 6V VCC operation
Low Standby-Current Consumption of 10 μA Max
I2C to 8-bit Parallel-Port Expander
Open-Drain Interrupt Output
Compatible With Most Microcontrollers
Latched Outputs With High-Current Drive Capability for Directly Driving LEDs
Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
۱.VCC: 3.3V or 5V power supply
۲.GND: Power ground
۳.SDA: I2C Data
۴.SCL: I2C Clock