Product Name : PCF8591 AD/DA Converter Module; Working Voltage : 2.5-6V Low standby current.through the I2C bus serial input / output. PCB Size : 36 x 23mm/1.4" x 0.92"(L*W);Hole Diameter : 3mm/0.1" PCF8591 by 3 hardware address pins addressing. Sampling rate PCF8591 I2C bus rate decided. Package Content : 1 x PCF8591 AD/DA Converter Module Maximum supply voltage 6 Volts Minimum supply voltage 2.5 Volts (DC) Mounting type PCB Mount Number of pins 5 Interface type I2C Number of channels 5 Three module interface description The left and right side of the module, respectively, outside the expansion of 2-pin connector, respectively, as follows: Left AOUT chip DA output interface AINO chip analog input interface 0 AIN1 chip analog input interface 1 AIN2 chip analog input interface 2 AIN3 chip analog input interface 3 SCL IIC clock interface on the right then single-chip IO port SDA IIC digital interface connected MCU IO port GND module to ground VCC power interface external 3.3v-5v Four modules short-circuit cap instructions Module a total of three red short-circuit cap, respectively, as follows: P4 connected to P4 short-circuit cap, select the thermistor access circuit P5 connected to P5 short-circuit cap, select the photosensitive resistor access circuit P6 connected to P6 short-circuit cap, select 0-5V adjustable voltage access circuit

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