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基于EFM8SB10F8/Si1153主控器件的容性触摸按键控制的墙面开关解决方案

2018-01-31
类别:工业控制
eye 512
文章创建人 拍明芯城

  概述

  控制轻便、体验新颖、打破传统墙面开关给人古板的印象,基于容性触摸按键控制的墙面开关,是基于容性触摸按键控制、可由单火供电,能让客户操作时体验轻便、新颖,可非常轻易替换传统86盒开关、轻松实现低成本升级。本方案所选器件,具有容性检测灵敏度高、安装方便、功耗低、性价比高的优点,可为用户带来安装简单、操作体验好、系统成本低等实实在在的好处。

基于容性触摸按键控制的墙面开关优选器件方案.png



  器件优势

  · Silicon Labs容性触摸MCU,EFM8SB10F8,最小分辨率为1fF,灵敏度高,可使墙面开关在各种环境下(干燥,或者浴室中高湿度),都能实现的精确识别;最大量程500pF,量程大,能够满足墙面开关不同按键大小的需求;支持SLEEP工作模式,休眠电流仅500nA(@3.3V,With RTC),低功耗特性,无论是电池供电还是单火供电,都可以减轻墙面开关电源的系统负担。

型号:EFM8SB10F8G-A-QFN24R          品牌:SILICON LABS

型号:EFM8SB10F8G-A-CSP16R          品牌:SILICON LABS

型号:EFM8SB10F8G-A-QFN24            品牌:SILICON LABS

型号:EFM8SB10F8G-A-QFN20R          品牌:SILICON LABS

【EFM8SB1】

EFM8 Sleepy Bee Family EFM8SB1 Data Sheet

The EFM8SB1, part of the Sleepy Bee family of MCUs, is the world’s most energy friendly 8-bit microcontrollers with a comprehensive feature set in small packages.

These devices offer lowest power consumption by combining innovative low energy techniques and short wakeup times from energy saving modes into small packages, making them well-suited for any battery operated applications. With an efficient 8051 core, 14 high-quality capacitive sense channels, and precision analog, the EFM8SB1 family is also optimal for embedded applications.

EFM8SB1.png

EFM8SB1 applications include the following:

• Touch pads / key pads

• Wearables

• Instrumentation panels

• Battery-operated consumer electronics

ENERGY FRIENDLY FEATURES

• Lowest MCU sleep current with supplybrownout (50 nA)

• Lowest MCU active current (150 μA / MHzat 24.5 MHz)

• Lowest MCU wake on touch averagecurrent (< 1 μA)

• Lowest sleep current using internal RTCand supply brownout (< 300 nA)

• Ultra-fast wake up for digital and analogperipherals (< 2 μs)

• Integrated LDO to maintain ultra-lowactive current at all voltages

Feature List

The EFM8SB1 highlighted features are listed below.

• Core:

• Pipelined CIP-51 Core

• Fully compatible with standard 8051 instruction set

• 70% of instructions execute in 1-2 clock cycles

• 25 MHz maximum operating frequency

• Memory:

• Up to 8 kB flash memory, in-system re-programmable from firmware.

• Up to 512 bytes RAM (including 256 bytes standard 8051 RAM and 256 bytes on-chip XRAM)

• Power:

• Internal LDO regulator for CPU core voltage

• Power-on reset circuit and brownout detectors

• I/O: Up to 17 total multifunction I/O pins:

• Flexible peripheral crossbar for peripheral routing

• 5 mA source, 12.5 mA sink allows direct drive of LEDs

• Clock Sources:

• Internal 20 MHz low power oscillator with ±10% accuracy

• Internal 24.5 MHz precision oscillator with ±2% accuracy

• Internal 16.4 kHz low-frequency oscillator or RTC 32 kHz crystal (RTC crystal not available on CSP16 packages)

• External crystal, RC, C, and CMOS clock options

• Timers/Counters and PWM:

• 32-bit Real Time Clock (RTC)

• 3-channel Programmable Counter Array (PCA) supporting PWM, capture/compare, and frequency output modes with watchdog timer function

• 4 x 16-bit general-purpose timers

• Communications and Digital Peripherals:

• UART

• SPI™ Master / Slave

• SMBus™ / I2C™ Master / Slave

• 16-bit CRC unit, supporting automatic CRC of flash at 256-byte boundaries

• Analog:

• Capacitive Sense (CS0)

• Programmable current reference (IREF0)

• 12-Bit Analog-to-Digital Converter (ADC0)

• 1 x Low-current analog comparator

• On-Chip, Non-Intrusive Debugging

• Full memory and register inspection

• Four hardware breakpoints, single-stepping

• Pre-loaded UART bootloader

• Temperature range -40 to 85 ºC

• Single power supply 1.8 to 3.6 V

• QSOP24, QFN24, QFN20, and CSP16 packages

       With on-chip power-on reset, voltage supply monitor, watchdog timer, and clock oscillator, the EFM8SB1 devices are truly standalone system-on-a-chip solutions. The flash memory is reprogrammable in-circuit, providing non-volatile data storage and allowing field upgrades of the firmware. The on-chip debugging interface (C2) allows non-intrusive (uses no on-chip resources), full speed, in-circuit debugging using the production MCU installed in the final application. This debug logic supports inspection and modification of memory and registers, setting breakpoints, single stepping, and run and halt commands. All analog and digital peripherals are fully functional while debugging. Each device is specified for 1.8 to 3.6 V operation. Devices are AEC-Q100 qualified (Grade 3) and are available in 16- pin CSP, 20-pin QFN, 24-pin QFN, or 24-pin QSOP packages. All package options are lead-free and RoHS compliant. Note: CSP devices can be handled and soldered using industry standard surface mount assembly techniques. However, because CSP devices are essentially a piece of silicon and are not encapsulated in plastic, they are susceptible to mechanical damage and may be sensitive to light. When CSP packages must be used in an environment exposed to light, it may be necessary to cover the top and sides with an opaque material.

  · Silicon Labs红外接近传感器SI1153,检测范围0~50cm,或1~2m(加透镜),检测范围宽,可满足墙面开关对不同人体检测距离的要求;驱动红外LED脉宽仅25.6 μs,可使系统平均功耗低,减轻墙面开关电源系统负担。

【Si1153】

Proximity/Ambient Light Sensor IC with I2C Interface

The Si1153-AA00/AA09/AA9x is an ambient light sensor, proximity, and gesture detectorwith I2C digital interface and programmable-event interrupt output.




Si1153.png




This touchless sensor IC includes dual 23-bit analog-to-digital converters, an integratedhigh-sensitivity array of visible and infrared photodiodes, a digital signal processor, andthree integrated LED drivers with programmable drive levels. The Si1153 offers excellentperformance under a wide dynamic range and a variety of light sources, includingdirect sunlight. The Si1153 can also work under dark glass covers. The photodiode responseand associated digital conversion circuitry provide excellent immunity to artificiallight flicker noise and natural light flutter noise. With two or more LEDs, the Si1153 iscapable of supporting multiple-axis proximity motion detection. The Si1153 is provided ina 10-lead 2x2 mm DFN package or in a 10-lead 2.9x4.9 mm LGA module with integratedLED, and is capable of operation from 1.62 to 3.6 V over the –40 to +85 °C temperaturerange.

KEY FEATURES

• Proximity detector

• From under 1 cm, to 50 cm withoutadditional lensing.

• From under 1 cm, to 200 cm with additional lensing (e.g., 5 mm hemispherical lens as in our EVB).

• Up to three independent LED drivers.

• 30 current settings from 5.6 mA to 360mA for each LED driver.

• Operates in direct sunlight with optionalon-die 940 nm passband filter.

• On die 940 bandpass filter that rejectsunwanted visible light and IR fromdaylight and other sources (Si1153-AA09/AA9X).

• Ambient light sensor

• <100 mlx resolution possible, allowingoperation under dark glass.

• Up to 128 klx dynamic range possibleacross two ADC range settings.

• Industry’s lowest power consumption

• 1.62 to 3.6 V supply voltage.

• 9 μA average current (LED pulsed 25.6μs every 800 ms at 180 mA plus 3 μASi1153 supply).

• <500 nA standby current.

• 25.6 μs LED “on” time keeps total powerconsumption duty cycle low withoutcompromising performance or noisecommunity.

• Internal and external wake support.

• Built-in voltage supply monitor andpower-on reset controller.

APPLICATIONS

• Wearables

• Handsets

• Display backlighting control

• Consumer electronics

1. Feature List

• Proximity detector

• From under 1 cm to 50 cm without additional lensing.

• From under 1 cm to 200 cm with additional lensing (e.g., 5mm hemispherical lens).

• Up to three independent LED drivers.

• 30 current settings from 5.6 mA to 360 mA for each LEDdriver.

• Operates in direct sunlight with optional on-die 940 nmpassband filter.

• On die 940 bandpass filter that rejects unwanted visible lightand IR from daylight and other sources (Si1153- AA09/AA9X).

• Ambient light sensor

• <100 mlx resolution possible, allowing operation under darkglass.

• Up to 128 klx dynamic range possible across two ADCrange settings.

• Industry’s lowest power consumption

• 1.62 to 3.6 V supply voltage.

• 9 μA average current (LED pulsed 25.6 μs every 800 ms at180 mA plus 3 μA Si1153 supply).

• <500 nA standby current.

• 25.6 μs LED “on” time keeps total power consumption dutycycle low without compromising performance or noise community.

• Internal and external wake support.

• Built-in voltage supply monitor and power-on reset controller.

• Trim-able internal oscillator with typical 1% accuracy.

• I2C Serial communications

• Up to 3.4 Mbps data rate.

• Slave mode hardware address decoding.

• Two package options:

• 10-lead 2 x 2 x 0.65 mm DFN

• 10-lead 2.9 x 4.9 x1.2 mm LGA module with integrated 940nm LED

• Temperature Range: –40 to +85 °C

         【墙壁开关】

  “墙壁开关”是指安装在墙壁上使用的电器开关,用来接通和断开电路的,控制照明灯的开关。狭义上的电工产品通常仅指建筑电气中的开关、插座。墙壁开关通俗称呼:控制灯具开关。

  从广义的概念上来讲,电工产品涵盖的范围较广,一般指向终端用户提供电源电器控制的设备,包括开关插座、断路器、综合布线、安防系统等等,又称建筑电气附件(固定、连接或开闭电路用的器件总称)

  开关

  开关有双控和单控的区别,双控每个单元比单控多一个接线柱。一个灯在房里可以控制,在房外也可以控制称作双控,双控开关可以当单控用,但单控开关不可以作双控。

  1)开关分类,

  按开关的启动方式来分: 拉线开关、旋转开关、倒扳开关、按钮开关、跷板开关. 触摸开关、复位开关、轻点开关等

  2)常用开关按连接方式分类,

  按开关的连接方式来分:单控开关、双控开关、双极(双路)双控开关等。

  3)按规格尺寸分

  按规格尺寸分:86型、118型、120型。

  地域分布:国内大部分使用86型开关(全国80%的地区),一些地区使用118的,120的用的很少。

  4)按功能分类

  声光控延时开关;触摸延时开关;门铃开关;调速(调光)开关;插卡取电开关。

  插座

  墙壁开关,狭义上是指开关,实际上是指墙壁开关、墙壁插座这一个大区域。有机械的、有智能的、有平板的和跷板的。

  1)电脑插座又称网络插座、网线插座.、宽带插座、网络面板。网络这种是从电话中分离,所以就有了电话电脑一体插座;网络的另一种从有线电视分离,所以有了电视电脑一体插座。

  2)电话插座

  3)电视插座又称TV插座、电视面板、有线插座

  4)空调插座,又称16A插座,因为一般的插座都是10A电流,空调插座是16A电流

  5)118插座是横向长方形,120插座是纵向长方形,86插座是正方形。118插座一般分,一位、二位、三位、四位插座。86插座一般是五孔插座,或多五孔插座或一开带五孔插座。






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