CapSense controller family device uses the PSoC 1 architecture with SmartSense auto-tuning for capacitive sensing applications. The device family supports capacitive buttons, sliders, and proximity sensing with an M8C 8-bit CPU operating up to 24 MHz. The referenced CY8C20437 orderable configuration provides 8 KB flash, 1 KB SRAM, 29 I/O, and a 24-pin QFN package. Integrated digital and analog resources include I2C, SPI, GPIO, comparator, analog mux, and IDAC functions.
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| Controller type | CapSense controller |
| CPU core | M8C 8-bit |
| Maximum CPU frequency | 24MHz |
| Flash memory | 8KB |
| SRAM | 1KB |
| I/O count | 29 |
| Capacitive sensing buttons | Up to 31 |
| Capacitive sensing sliders | Up to 6 |
| Capacitive sensing feature | SmartSense auto-tuning |
| Proximity sensing | Supported |
| Serial interfaces | I2C, SPI |
| Package | 24-pin QFN |
| Product family | PSoC 1 |
These are design resources that include the Cypress Semiconductor CY8C20437
Technical reference manual for PSoC CY8C20xx7/S and CY8C20055 families covering M8C CPU core, CapSense, digital resources, and register configurations.
