Digital Display Development Board 24 Keyboard Scanning Professional Display Control Module

Features: This module is self-designed. The module drives the 8-bit common digital tube, scans 24 buttons, and assembles a single-chip STC15W, which eliminates the trouble of externally connecting the for MCU write driver. In addition, it also has a power indicator, the operation indicator of the for MCU driver, the buzzer and the remaining two legs of the TM1638 drive the LEDs respectively, so that the hardware interface of the TM1638 chip has been used. This module has led to the communication interface of all IO and TM1638 of STC microcontroller, which is more convenient for experiment. It can be said that this module can meet the experimental needs, especially the pre-production development of the product as a human-computer interaction panel, and the tuning/testing machine is very convenient. There are two ways to connect externally with this module: after the external serial port is switched to TTL, it can communicate with the microcontroller on the module to control the display of the digital tube, obtain the keyboard value and resources on other modules; externally write the driver and communicate with TM1638. There are still many devices that can use this module. This module mainly treats the input unit as a separate module, reducing the burden on the main CPU and allowing the main CPU to do more important things. Specification: Display mode: 10 segments * 8 bits Key scan: 8*3bit Brightness adjustment circuit: adjustable duty cycle 8 levels Serial interface: CLK, STB, DIO Oscillation mode: RC oscillation (450KHz + 5%) Package size: approx. 10.5 * 8 * 1.1 cm / 4.1 * 3.1 * 0.4 inch   Package List: 1 * Module