| PartNumber | CY8C20666A-24LTXIT | CY8C20666AS-24LQXIT | CY8C20666AS-24LQXI |
| Description | 8-bit Microcontrollers - MCU 0.75 MHz to 24 MHz 33 I/O | 8-bit Microcontrollers - MCU CAPSENSE CONTROLLER | 8-bit Microcontrollers - MCU CAPSENSE CONTROLLER |
| Manufacturer | Cypress Semiconductor | Cypress Semiconductor | Cypress Semiconductor |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | QFN-48 | QFN-24 | QFN-24 |
| Series | CY8C20xx6A | CY8C20666AS | CY8C20666AS |
| Core | M8C | M8C | M8C |
| Data Bus Width | 8 bit | 8 bit | 8 bit |
| Program Memory Size | 32 kB | 32 kB | 32 kB |
| Data RAM Size | 2 kB | 2 kB | 2 kB |
| Packaging | Reel | Reel | Tray |
| Brand | Cypress Semiconductor | Cypress Semiconductor | Cypress Semiconductor |
| Interface Type | I2C, SPI, USB | I2C, SPI | I2C, SPI |
| Moisture Sensitive | Yes | Yes | Yes |
| Processor Series | CY8C20x66A | - | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 2000 | 2500 | 490 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Tradename | CapSense | CapSense | CapSense |
| Unit Weight | 0.005309 oz | 0.032741 oz | 0.032741 oz |
| Maximum Clock Frequency | - | 24 MHz | 24 MHz |
| Number of I/Os | - | 36 I/O | 36 I/O |
| Operating Supply Voltage | - | 1.71 V to 5.5 V | 1.71 V to 5.5 V |
| Minimum Operating Temperature | - | - 40 C | - 40 C |
| Maximum Operating Temperature | - | + 85 C | + 85 C |
| Program Memory Type | - | Flash | Flash |
| Supply Voltage Max | - | 5.5 V | 5.5 V |
| Supply Voltage Min | - | 1.71 V | 1.71 V |