PCF8574 IO Πλακέτα επέκτασης

Based on the I2C interface I / O expansion modules, use two I / O scalability eight I / O (up to 8 simultaneous use PCF8574, expanded to 64 I / O)
The most important feature:
1. Support two interface types access target board: Pin or row seat
2. Supports I2C bus cascade (by pin, row seat docking method, which can use multiple I2C modules)

Typical applications: for I / O resources were scarce MCU I / O expansion
The main resource: PCF8574, I2C interfaces, eight parallel

Module function:
This is the I/O extended module, which use for I2C interface, you can use two of the module to extend 8 I/O. Support cascading, and you can use at most 8 modules to extend 64 I/O at the same time. Can be changed the address by set toggle switch
PCB Size: 36 x 16mm/1.41*0.62"
Every 2 seconds, make P0-P7 port output High level, Low level, and put 3 toggle switches to ON, the address of module is 0x27