CY8C20636AN-24LTXI

Application Specific Microcontrollers Overview

The CY8C20636AN-24LTXI is an 8-bit microcontroller within the PSoC 1 family, featuring a CapSense controller with SmartSense auto-tuning. It integrates an M8C CPU operating at up to 24 MHz, 8 KB Flash, and 1 KB SRAM. The device supports 1–33 buttons and 0–6 sliders via patented CSA_EMC and CSD algorithms. Key electrical parameters include an operating voltage range of 1.71 V to 5.5 V, standby current of 1.1 μA (typ), and deep sleep current of 0.1 μA (typ). It includes Full-Speed USB, I2C, SPI, three 16-bit timers, a 10-bit ADC, and two comparators.

Application Specific Microcontrollers Feature Summary

• SmartSense Auto-Tuning: Eliminates manual tuning by maintaining optimal sensor performance and compensating for manufacturing variations.
• CapSense Technology: Supports up to 33 sensing inputs using patented CSA_EMC and CSD algorithms with low average power consumption of 28 µA/sensor in run time.
• M8C Processor: Harvard-architecture 8-bit CPU running at a maximum frequency of 24 MHz.
• Integrated Peripherals: Includes Full-Speed USB 2.0, I2C Slave, configurable SPI, three 16-bit timers, 10-bit ADC, and two analog comparators.

Application Specific Microcontrollers Applications

• Capacitive touch interfaces requiring robust noise immunity against conducted and radiated interference.
• Battery-powered devices utilizing deep sleep modes for extended operational life.
• Systems requiring integrated USB connectivity for data communication or programming.
• Applications needing programmable analog and digital peripherals for custom signal processing.

Application Specific Microcontrollers Procurement Notes

Verify component authenticity through authorized distributors. Check for End-of-Life (EOL) status and lead times due to potential obsolescence. Ensure compatibility with existing PCB layouts and firmware environments. Confirm RoHS compliance and packaging specifications match design requirements.

Application Specific Microcontrollers Selection Notes

Select based on required GPIO count and sensing channel availability. Choose packages offering sufficient pins for specific CapSense configurations (buttons/sliders). Consider memory size (Flash/SRAM) relative to application complexity. Verify voltage range compatibility with system power supply.

Application Specific Microcontrollers Part Context

Part of the CY8C20XX6A/S PSoC 1 family designed to replace multiple traditional MCU components. Combines programmable analog/digital blocks with a fast CPU. Targets applications needing flexible hardware configuration and reduced bill of materials.

Application Specific Microcontrollers Replacement Considerations

Consult official replacement lists for discontinued parts. Evaluate pin-to-pin compatible alternatives within the same manufacturer's portfolio. Assess firmware migration efforts when switching to newer architectures.

Application Specific Microcontrollers FAQ

What is the typical power consumption in Deep Sleep mode?

The typical current consumption in Deep Sleep mode is 0.1 μA.

How does SmartSense improve CapSense reliability?

SmartSense auto-tuning establishes, monitors, and maintains all required tuning parameters, eliminating the need for manual tuning during development and production while compensating for PCB and overlay material variations.

What sensing algorithms are supported?

The device supports patented CSA_EMC and CSD sensing algorithms, with SmartSense_EMC providing enhanced noise immunity against high-frequency conducted and radiated noise.