ADC0809 module eight -bit/8L road parallel AD conversion module circuit modulus conversion process

Link: https://pan.baidu.com/s/17buvioc_hcjh_g8a2xflpq? PWD = 1234

Extract code: 1234

Baby parameter

Module size: 3.4cm*5.2cm;

Power supply voltage: 5V;

Module interface description

VCC: Power supply positive poles;

GND: Power supply negative electrode

IN0-in7: 8 of the analog input port;

D0-D7: 8-bit data output port;

CLK: ADC0809 clock;

OE: Output allowed signal, high level is effective;

EOC: Convert the end signal, high level is effective;

STR: Start the conversion signal;

All IO ports are led, and through the following short road caps, the debugging is more convenient and flexible:

The J7 potentiometer enables control, the J7 short circuit cap is inserted, and the pressure regulator circuit on the board is connected to the channel IN3;

J8 Control is connected to VREF+VCC. Selecting the reference potential to 5V, you can also go to the short circuit cap, enter the reference voltage yourself;

J9 control negative reference voltage VREF-and GND connection. Select the negative reference potential to 0V. You can also go to the short-circuit cap and enter the negative reference voltage yourself;

J3/J4/J4 is the address entered by the flashlight to select the analog channel input. You can also remove the short -circuit cap and set the channel address through the single -chip microcomputer software;