BC7595EC 6¾-digit(48 segments) LED Display Driver with Keyboard
The BC7595EC requires no external peripheral circuits to drive a 6-digit 7-segment display or 48 independent LEDs. It features a specialized command that utilizes the decimal point segments to create an extra digit, providing an enhanced 6¾-digit display mode (capable of displaying all numerals except ‘7’).
- Hexadecimal Decoding: Supports hex decoding; simply writing a value displays the corresponding character, eliminating the need for user-written lookup tables.
- Individual Control: All display segments are individually addressable.
- Blinking: Any LED can be set to blink independently. The blinking speed is adjustable, and the process is automated, requiring no CPU intervention.
- Includes a keyboard interface supporting up to 48 keys.
- UART serial interface, easily connects with various MCUs and PCs, easy opto-isolation or conversion to RS-485/422 interfaces for remote I/O equipment.
A provided C library allows users to implement full functionality—including decimal/hex/floating-point display, key combinations, long-press detection, and long-idle detection—with only a few lines of code.
Features:
- No external components required.
- Enhanced 6¾-digit display: Allows continuous display from 0000000 to 6999999.
- 48 LED segments: All individually addressable.
- Individual LED blinking: Speed adjustable.
- Brightness: 16 levels.
- Interface: UART.
- Direct key value output.
- Supports arbitrary key combinations and arbitrary long-press detection.
- SSOP20 package
Suggested Retail Price:
- 1000+ : ￥2.85
- 100-999 : ￥3.40
- 50-99 : ￥3.99
- 10-49 : ￥4.49
- 1-9 : ￥5.99
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BC7595 Demo Board
When used with the bc6xxx-bc759x development helper software, it allows for a visual demonstration of the BC7595’s display functions and keyboard status. The software’s serial data recorder and interpreter display real-time serial data transmission and reception, explaining the meaning of each data packet to help users understand the chip’s operating principles and workflow. Furthermore, the interpreter can analyze external input commands generated by the user’s program, making it the most convenient tool for troubleshooting software issues.
BC6xxx BC759x Development Helper Software
Designed as portable software, it requires no installation and can be run directly from a USB drive; simply extract the single executable file and run it.
While optimized for use with the BC759x demo boards, it is also designed for independent use to assist in debugging user circuit functions. For standalone operation, simply connect the serial port of the BC759x or BC6xxx chip on your circuit to the computer using a USB-to-Serial converter.
Main Features:
Real-time Serial Data Recorder & Interpreter: Records serial data (including keyboard data) in real-time during demos and testing, translating it into corresponding commands. Data can be saved to disk for detailed analysis, allowing you to understand exactly what is happening “behind the scenes” for every function.
External Input Analysis: The data interpreter accepts external input. If your program’s performance differs from expectations, you can feed your program’s output into the computer to see the actual data received by the BC759x and its meaning, making it convenient to locate issues.
Custom Commands: Allows entry of user-defined commands, enabling you to see the actual execution effect of each specific command.
Keyboard Monitoring: Displays real-time data returned by the keyboard and visually indicates the keyboard status.
PC Keyboard Input: Both the 7-segment LED display and dot-matrix display can accept input directly from the user’s computer keyboard. (BC7591 only)
Dot-Matrix Demos: Demonstrates shifting, scrolling, and other functions on the dot-matrix display. The software includes built-in fonts for all standard keyboard characters and selected Chinese characters.
Live Adjustments: Display brightness and blinking frequency can be adjusted at any time.