CAP1188 - Uncategorized Microchip - Free user manual and instructions
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| Product Type | Capacitive Touch Controller IC |
| Brand | Microchip Technology |
| Model | CAP1188 |
| Number of Touch Channels | 8 |
| Communication Interface | I2C and SPI |
| Supply Voltage | 2.7V to 5.5V |
| Output Options | LED dimming and interrupt output |
| Sensitivity Adjustment | Programmable via registers |
| Power Consumption | Low power, typical < 1 mA active |
| Package Type | 20-pin QFN |
| Dimensions | 4.0 mm x 4.0 mm x 0.9 mm (QFN) |
| Operating Temperature | -40°C to +125°C |
| Touch Sensing Method | Capacitive proximity |
| Number of LED Drivers | 8 |
| Data Readout | Register-based via I2C/SPI |
| Configuration Options | Multiple I2C address select pins |
| Protection Features | Built-in ESD protection |
| RoHS Compliant | Yes |
| Maintenance | None required; static sensitive |
| Safety Precautions | Handle with ESD precautions |
Frequently Asked Questions - CAP1188 Microchip
What is the CAP1188?
The CAP1188 is a capacitive touch controller IC from Microchip, designed to detect touch on up to 8 independent channels.
How many touch channels does the CAP1188 support?
It supports 8 capacitive touch inputs, each individually configurable for sensitivity and threshold.
What communication interfaces does the CAP1188 use?
The CAP1188 supports both I2C and SPI serial interfaces for reading touch status and configuring registers.
What is the operating voltage range?
It operates over a supply voltage range of 2.7V to 5.5V, making it compatible with 3.3V and 5V systems.
How can I adjust the touch sensitivity?
Sensitivity is adjusted by programming the threshold and sensitivity registers over the I2C/SPI interface.
Can the CAP1188 drive LEDs?
Yes, it includes 8 LED driver outputs that can be used for touch-triggered lighting or feedback.
What is the typical power consumption?
The CAP1188 is designed for low power, with typical active current below 1 mA depending on configuration.
How do I set the I2C address?
The I2C address is set via the ADDR pin, allowing selection among multiple addresses for using multiple devices on the same bus.
What are common applications for the CAP1188?
Common applications include touch interfaces in consumer electronics, industrial control panels, and proximity sensing systems.
What precautions should I take when handling the IC?
The CAP1188 is a CMOS device sensitive to electrostatic discharge; use proper ESD grounding and handling procedures.
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USER MANUAL CAP1188 Microchip
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Product information
Brand : Microchip
Model : CAP1188
Category : Uncategorized