ماژول سون سگمنت 8 رقمی دارای درایور TM1638

TM1638 display module - LED & Key Breakout

8 Bits, 8 keys, 8 LEDs, 8 digital tubes, common cathode LED digital tube. With TM1638 Chip, this module gather more than three common SCM peripheral circuits. The advantage is only three IO ports will be occupied when it drives. SCM doesn't need to work for scaning display and key scaning. It only need to read the relevant register to send display data or test button so it save MCU resources effectively. Keys are sensitive and display effectively.

Chipset: TM1638
Supply Voltage: 5V DC
Display: 8 x LED's and 8 x 7 Segment Displays
Input : 8 x Push To Make Switches
The board has just 3 control pins, Strobe, Clock and Data
Size:75 x 48mm

How does the board Function

The board has just 3 control pins plus power and ground. The control pins are strobe, clock and data. The strobe and clock pins are only OUTPUT while the data pin can be both OUTPUT and INPUT. The strobe pin is used when sending data to the board – you set the strobe pin to LOW before you start sending data – one or more bytes – and then set the strobe pin back to HIGH. Note that there is just one data pin which means the data is being sent 1 bit at a time. This is where the clock pin comes into play.

When sending data you set the clock pin to LOW then you set the data pin and set the clock pin back to HIGH to commit the bit value. You are probably already familiar with this pattern (if not take a look at this post) – it is the standard way of sending data with shift registers and therefore we can just use the standard shiftOut function to send 8 bits of data with just one line of code.

The board has 4 functions

Activate/deactivate board and initialize display
Write a byte at specific address
Write bytes starting from specific address
Read buttons

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