BC6561EC 56-key Keyboard Driver
千片价￥2.85
The BC6561EC is a single-chip, 56-key keyboard interface IC capable of connecting directly to a 7×8 keyboard matrix. It supports Normally Open (NO) or Normally Closed (NC) keys, combinations of both, or standard switches. Supported key types include metal contact switches and conductive rubber buttons. The BC6561EC facilitates the easy implementation of any type or quantity of combination keys and long-press functions.
Key Features:
- Supports NO/NC keys
- Supports an arbitrary number of key combinations
- Supports arbitrary long-press detection
- Single-wire interface (UART, 9600 Baud)
- Direct key value output
- Operating Voltage: 2.2–5.5V
- Operating Current: 4.2µA (@3V)
- Package: SSOP20
Interface & Connectivity: The BC66561EC uses a UART serial interface to output key values directly, simplifying program processing. Requiring only a single I/O line, it easily interfaces with various MCUs and PCs. It also allows for simple implementation of optocoupler isolation or conversion to an RS-485 interface for remote keyboard applications.
Software Support:
C Driver Library: A C-language driver library is provided. Using this library, users can implement a full-featured keyboard interface—including functions like long-press and key combinations—with fewer than 10 lines of code.
Arduino Compatible: The Arduino driver library is intergrated in the Arduino IDE Library Manager. Simply search for the chip part number and install.
Low Power Consumption: The BC6561EC features extremely low power consumption. At a supply voltage of 3V, it requires only 4.2µA. It can operate continuously for over 5 years on two AA batteries, making it suitable for various battery-powered devices.
Suggested Retail Price (MSRP):
- 1000+ : ¥2.85
- 100–999 : ¥3.40
- 50–99 : ¥3.99
- 10–49 : ¥4.49
- 1–9 : ¥5.99
Related Downloads
Related Products
BC6301 Key Matrix(5x6) Adapter Board
The BC6301 shares identical interface and protocol with the BC6561, differing only in the number of supported keys.
This is a complete BC6301 matrix keyboard interface circuit that requires only a single serial line to connect to the host. It features a breakout pin connector for a 6-row by 5-column keyboard matrix. The kit includes a 4×4 membrane keypad, enabling plug-and-play for microcontrollers (MCUs) and Arduino.
Key values are output directly via the UART port. In the simplest applications, the host side requires almost no programming, executing operations directly based on the received key values.
Typical Applications Include:
Evaluation: Evaluating the functionality of the BC6xxx series chips.
Arduino Integration: Functioning as an Arduino keyboard when paired with the driver library (search for “BC6301” in the Arduino IDE Library Manager to install).
PC Peripherals: Connecting to a computer via a USB-to-Serial adapter to serve as a dedicated keyboard for PC applications.
Prototyping: Serving as a development board for MCU systems, eliminating the need for custom PCB fabrication during the prototyping phase.
Retail Price: Kit starting from ¥19
BC6xxx BC759x辅助开发工具软件
通过USB-串口转换器连接到电脑后，可以直接在电脑上实时看到当前BC6561的键盘状态，并且有串口数据记录解释器，显示串口实际收到的数据及其代表的含义。
绿色设计，无需安装，可运行于U盘，单一可执行文件，解压后直接运行即可。
主要功能：
- 可实时看到键盘传回的数据，并直观看到键盘的状态。
本产品供免费下载。