Key indicators:
Single supply ★
★ PCF8591 operating voltage range of 2.5V-6V
Low standby current ★
★ I2C bus serial input / output
3 ★ PCF8591 by addressing hardware address pins
★ PCF8591 I2C bus speed sampling rate determined
★ 4 analog inputs of programmable single-ended or differential input
★ automatic incremental channel selection
★ PCF8591 analog voltage range from VSS to VDD
★ PCF8591 built track and hold circuit
★ 8-bit successive approximation A / D converter
DAC gain achieved by ★ 1 analog output
PCF8951 2 module chip module supports four external voltage input acquisition (input voltage range of 0-5v) 3 modules integrated photoresistor, by collecting ambient light intensity AD exact numerical integration module thermistor 4, the ambient temperature can be accurately acquired by ADNumerical integration module 5 0-5V voltage input acquisition channel 1 (input voltage by adjusting potentiometer blue) with a power indicator module 6 (the module of power indicator lights) with DA output indicator module 7, when an output interface module DAthe voltage reaches a certain value, the board DA output indicator lights, the greater the voltage, the more significant indicator brightness; 8 module PCB dimensions: 3.6cm * 2.3cm 9 standard double sided, 1.6mm thickness, beautiful layout, four weeksa through hole, aperture: 3mm, convenient fixed
Description module interface modules are extended left and right two-way pin interfaces, respectively, as follows:
Left AOUT chip DA output interface
AINO chip analog input interface 0
AIN1 analog input interface chip 1
AIN2 analog input interface chip 2
AIN3 analog input interface chip 3
The right SCL IIC clock interface connected microcontroller IO port
SDA IIC digital interface connected microcontroller IO port
The external ground G