Allicdata Part #: | 428-3338-5-ND |
Manufacturer Part#: |
CY8CMBR3102-SX1I |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Cypress Semiconductor Corp |
Short Description: | IC CAP SENSE 8SOIC |
More Detail: | Capacitive Touch Buttons 8-SOIC |
DataSheet: | CY8CMBR3102-SX1I Datasheet/PDF |
Quantity: | 3398 |
Series: | CapSense® Express™ SmartSense™ |
Packaging: | Tube |
Part Status: | Active |
Type: | Buttons |
Proximity Detection: | Yes |
Number of Inputs: | Up to 2 |
LED Driver Channels: | Up to 1 |
Interface: | I²C |
Resolution: | -- |
Voltage - Supply: | 1.8 V ~ 5.5 V |
Current - Supply: | 140mA |
Operating Temperature: | -40°C ~ 85°C |
Package / Case: | 8-SOIC (0.154", 3.90mm Width) |
Supplier Device Package: | 8-SOIC |
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Introduction
CY8CMBR3102-SX1I belongs to a family of MCUs specifically designed for capacitive sensing applications. The device is an integrated, low power, high performance, configurable system-on-a-chip device optimized for the development of capacitive touch sensing applications. The device comes equiped with multiple capacitive sensing channels, integrated voltage regulation circuitry, an integrated ADC, and some GPIOs to provide integration possibilities. It is ideal for applications ranging from simple capacitive touch sensing to complex user interfaces.
Application Field
CY8CMBR3102-SX1I is primarily used in applications requiring touch sensing for user input. The device is most commonly used to create capacitive touch buttons, sliders and wheels for user input in consumer, industrial and automotive applications. It is suitable for a wide range of applications from pointing devices, body-sensitive touch buttons, to multipoint touchpads.
The device is also used in applications where the ability to determine the exact location of layout changes such as key presses and buttons is important. This can be done through multiplexing multiple capacitive channels through a single signal and then decoding the capacitance of each channel. This is particularly useful in applications such as keyboards and gaming controllers.
The device is also suitable for the development of capacitive proximity sensing applications. This means that it can be used to detect nearby objects or motion through the use of integrated capacitive sensing channels. This is used in applications such as automatic lighting, automotive keyless entry systems, and hand-gesture recognition.
Working Principle
CY8CMBR3102-SX1I is based on the principle of capacitive sensing. This is a method of detecting changes in capacitance. When an object interacts with a sensing electrode, the capacitance of the electrode changes. The device is able to detect these changes and is able to interpret them as an input. This is achieved through a technique known as self-capacitance.
The capacitive sensing channel consists of an integrated capacitive sensing charge-pump circuit, an array of sensing pads, and a switching matrix element. A capacitive sensing charge-pump circuit is used to charge the sensing pads and measure the resulting capacitance change. The switching matrix element provides multiplexing capability to switch quickly between frequency channels.
The device also contains an integrated Analog-to-Digital Converter (ADC) to measure the capacitance change of the sensing pads. The ADC samples the voltage change and generates a digital output. This output is then used to determine the location of any applied force on the array of sensing pads.
Conclusion
In conclusion, CY8CMBR3102-SX1I is a low power, high performance, configurable system-on-a-chip device optimized for the development of capacitive touch sensing applications. It is most commonly used to create capacitive touch buttons, sliders and wheels for user input as well as detect the precise location of user input layout changes. It is also suitable for development of capacitive proximity sensing applications such as in automatic lighting, keyless entry systems, and hand-gesture recognition.
References
1. CY8CMBR3102-SX1I Datasheet, Cypress Semiconductor Corporation, 2018
2. Capacitive Sensors, Cypress Semiconductor Corporation, 2018
The specific data is subject to PDF, and the above content is for reference
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