
触摸按键模块
本触摸按键模块专为开发板设计。采用CA51M151T3A MCU作为核心控制单元,集成高精度触摸感应技术与丰富的功能接口,为开发板提供便捷、灵敏且稳定的触摸按键输入功能,适用于各种需要无线控制与触摸交互的应用场景,如智能家居设备、工业控制终端等。
功能
触摸感应与按键控制
借助CA51M151T3A MCU内置的触摸感应控制器,无需外接电容,最多可支持26路触摸通道,可实现对多个触摸按键的精确检测与控制,能敏锐捕捉轻触、长按、双击等多种触摸手势,满足不同的操作需求。
每个触摸按键的触发阈值和响应时间等参数均可通过软件灵活配置,以适应不同的应用场景和用户操作习惯,有效降低误触发几率,提高触摸操作的准确性和可靠性。
内置功能模块与辅助功能
集成了26路12位ADC,可用于采集外部模拟信号,实现如环境光强度检测、温度传感器数据采集等功能,为开发板提供更多的环境感知能力,丰富了系统的功能和应用场景。
具备16位PWM、低电压检测(LVD)等功能模块,PWM可用于控制电机转速、调节显示屏亮度等;LVD则可实时监测电源电压,当电压低于设定阈值时,可触发相应的复位或中断操作,保障系统的稳定性和可靠性。
低功耗管理
CA51M151T3A MCU支持IDLE、STOP和低速运行三种省电模式,在待机或长时间无操作状态下,模块可自动进入低功耗模式,有效降低系统能耗。
规格
- MCU: CA51M151T3A
- Core:
CPU: 1T 8051, with a maximum speed 10 times faster than that of the traditional 8051
It is compatible with the 8051 instruction set and has a dual DPTR working mode - Operating temperature: -40 ~ +85 °C
- Clock system:
External low-speed oscillator: 32.768 KHz
Built-in low-speed RC oscillator: 128 KHz
Built-in high-speed RC oscillator: 8 MHz, with an accuracy of ±2% @ 5V/25 °C (factory calibrated) - Touch keys:
It has a built-in touch sensing controller and does not require external capacitors
It can support a maximum of 26 touch channels
It has high anti-interference performance and complies with EMC (CS dynamic 10V, EFT 4KV) standards
It supports touch interrupts
It supports the parallel connection of touch channels, which can be used to implement the low-power mode - Low power consumption:
In STOP mode, the current is less than 7uA
In IDLE mode, the current is less than 33uA - Reset mode: Power-on/power-off reset, software reset, watchdog reset, low-voltage detection reset