ADS1256 8-channel 24-bit ADC module is equipped with TI ADS1256IDB micro-power consumption, high-precision ADC chip and 2.5V reference voltage source, SPI interface communication, data output rate up to 30ksps, support single-ended and differential input

Interface Description:
5V, GND:5V power input;
SCLK, DIN, DOUT, CS:SPI communication interface;
DRDY:ADS1256 data ready output (active low);
PDWN:ADS1256 synchronization/shutdown power input (active low level); AIN0-AIN7: The analog voltage input terminal can be used as 8 independent single-ended inputs or 4 groups of differential inputs (the measured voltage should be shared with the module).
Since the ADS1256 power supply voltage is 5V and the measured voltage should be 2V lower than the power supply voltage, the module is only suitable for measuring analog voltages within 3V.
The module provides STC15W & & STM32 single chip microcomputer 8-channel serial port display reference program and STC89C52 single chip microcomputer 4-channel 1602_LCD display reference program, of which the simple test method of STC89C52 single chip microcomputer 1602LCD liquid crystal is as follows:
5V and GND are connected to DC 5V power supply, SCLK, DIN, DOUT, DRDY and CS are respectively connected to P1.2, P1.3, P1.4, P1.5 and P1.6 of single chip microcomputer, AIN0, AIN1, AIN2 and AIN3 are respectively connected to 2.5V, 2.5V, 2.5V and 2.5V (the measured voltage should be shared with the ADS1256), and four groups of voltage values will be displayed on the 1602 liquid crystal, among them, the first, second and fourth groups are the voltage values of single-ended input of AIN0, AIN1 and AIN3, and the third group is the difference of AIN2-AIN3. The four groups of voltage values are about 2.5V, 2.5V, 0V and 2.5V respectively.