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ماژول توسعه دهنده PCA9555 GPIO دارای ارتباط I2C
GPIO Expander application:
● small size, low cost;
● Low power consumption and extend battery life;
● provide additional I / O ports, enabling the processor to control more of the signal, increased
functionality:
● a standard serial protocol interface (I2C interface), to reduce the signal transmission lines and CPU resources;
● You can control logic signal input, output, LED drive, or power control switch;
● with interrupt-driven, avoid polling cause greater CPU power consumption;
● without CPU intervention can play a major functions, such as PWM dimming input detection;
● inputs and outputs can be achieved between the high and low voltage switching back and forth.
Pin Description:
1, VCC, GND for the power supply range 2.3V-5.5V available.
2, SDA, SCL, respectively IIC data and clock ports on the board comes with pull greatly simplify your development and use.
3, IIC interface may also draw a plurality of modules, the address is determined by A2 A1 A0 three, the hardware configuration can be done on our module.
Electrical Parameters:
Module size:33 * 35 mm
Operating temperature:-40 ℃ ~ + 85 ℃
storage temperature: -45 ℃ ~ + 90 ℃
Function Interface:I2C communication pins
A0-A1-A2 mailing address hardware configuration lead pin
An interrupt signal output
16 GPIO output pin extension
Power supply for electrically-pin