Two 74HC595 cascade dot matrix 16*16LED driver should not put two pieces of the shift clock pulse together, then the latch output control pulse together, then the serial data output of the first stage is connected to the serial data input to the next level is 9 from 14 is not? If the use of 74HC595 as 16*16 lattice column driver, that should not be displaced 16 times and then output? Can...
Two 74HC595 cascade dot matrix 16*16LED driver should not put two pieces of the shift clock pulse together, then the latch output control pulse together, then the serial data output of the first stage is connected to the serial data input to the next level is 9 from 14 is not it?Is.
If 74HC595 is used as the column driver for the 16*16 dot matrix, should it be shifted 16 times and then output? But I have a little bit of it. There are only accumulators in the microcontroller that can perform shift operations, but it has only 8 bits. How can that be achieved by 16 bit movement?2, 595, 16.
Are you ready? With two pieces of 595 chip drive 16*16LED dot matrix, and 51 single-chip drive.
Four pieces for 74HC595Row scanConnect the latch pulses of two sets (one group, two pieces) together.Then put the first piece of 'Q7' into the second piece SDA. Also, put each group of SCK together.The sixteen bit movement is onlyYou send data to 595 miles. Then 595 will throw out the data that was first sent in. Then move the whole forward.In addition, pay attention to. OE to ground. And when output is needed, latch to produce an increase.
