MakerFocus 2pcs TM1638 Digital LED Display Module 8-Bit LED 8-Bit Digital Tube 8 Keys with Dupont Cable for AVR Arduino
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Last refresh Jun/26/2019 02:42 AM
2pcs TM1638 Digital LED Display Module 8-Bit LED 8-Bit Digital Tube 8 KeyS with Dupont Cable for AVR Arduino
TM1638 is a LED (light-emitting diode display) driver control circuit with a keyboard scan interface, the internal set Into a MCU digital interface, data latch, LED high-voltage driver, keyboard scanning circuit;
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.
Power CMOS process;
Display mode 10 segments × 8 bits;
Key scan (8×3bit);
Brightness adjustment circuit (8-step adjustable duty cycle);
Serial Interface (CLK, STB, DIO);
Oscillation mode: RC oscillation (450KHz+5%);
Built-in power-on reset circuit;
Uses SOP28 package.
Material: Glass fiber reinforced plastic, PBT shell, PA blades
How to connect: VCC GND 5V power supply, STB CLK DIO SCM IO port.
When the DIO output data is N-channel open-drain output, it needs an external 1K-10K pull-up resistor when reading the key.
2 * TM1638 Digital LED Display Module
2 * Dupont cable
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