CY8C20636A-24LQXIT

Application Specific Microcontrollers Overview

The CY8C20636A-24LQXIT is an 8-bit programmable CapSense controller from Infineon Technologies, based on the PSoC architecture. It features an M8C CPU core operating at a maximum frequency of 24 MHz. The device includes 8 KB of Flash program memory and 1 KB of SRAM data memory. It supports up to 33 capacitive sensing inputs via its GPIO pins, utilizing patented CSA_EMC and CSD algorithms with SmartSense Auto-tuning for robust noise immunity. The component operates within a voltage range of 1.71 V to 5.5 V and is available in a QFN-24 package.

Application Specific Microcontrollers Feature Summary

• M8C CPU Core: Harvard-architecture 8-bit processor with a maximum speed of 24 MHz.
• CapSense Technology: Supports 1–33 buttons and 0–6 sliders using CSA_EMC and CSD sensing algorithms with SmartSense Auto-tuning.
• Memory Configuration: Equipped with 8 KB Flash and 1 KB SRAM, supporting Read While Write EEPROM emulation.
• Power Management: Operates between 1.71 V and 5.5 V, with typical standby current of 1.1 μA and deep sleep current of 0.1 μA.

Application Specific Microcontrollers Applications

• Capacitive touch interfaces requiring auto-tuning capabilities
• Low-power embedded systems with USB connectivity
• Consumer electronics with multiple sensor inputs

Application Specific Microcontrollers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type, temperature range, and tape-and-reel specifications. Ensure compatibility with the required development tools, such as PSoC Designer, for hardware and firmware configuration.

Application Specific Microcontrollers Selection Notes

Select this model when a balance of moderate I/O count (up to 36 GPIOs) and integrated CapSense functionality is required. The 24 MHz clock speed and 8 KB/1 KB memory configuration suit applications that do not require the larger memory options found in the 16 KB or 32 KB variants of the CY8C20XX6A family.

Application Specific Microcontrollers Part Context

This component belongs to the CY8C20XX6A/S series of 1.8 V Programmable CapSense Controllers. It shares architectural similarities with other devices in the family, such as the CY8C20637, but differs in pin count and package options. The series is designed to replace traditional MCU-based components with a single-chip programmable solution.

Application Specific Microcontrollers Replacement Considerations

Direct substitutes within the same package and pinout include other members of the CY8C20XX6A family with equivalent or larger memory sizes, such as the CY8C20637, provided the additional resources are acceptable for the design.

Application Specific Microcontrollers FAQ

What sensing algorithms does the CY8C20636A support?

It supports patented CSA_EMC and CSD sensing algorithms, along with SmartSense_EMC Auto-Tuning for improved noise immunity.

What is the maximum sink current per GPIO?

Each GPIO pin can sink up to 25 mA, with a maximum total sink current of 120 mA for all GPIOs combined.

Does the device include a USB interface?

Yes, the CY8C20636A includes a Full-Speed USB 2.0 compliant interface operating at 12 Mbps.