| Series | PSOC®1 CY8C21xxx |
| Package | Bulk |
| Part Status | Obsolete |
| Core Processor | M8C |
| Core Size | 8-Bit |
| Speed | 24MHz |
| Connectivity | I²C, SPI, UART/USART |
| Peripherals | POR, PWM, WDT |
| Number of I/O | 16 |
| Program Memory Size | 4KB (4K x 8) |
| Program Memory Type | FLASH |
| EEPROM Size | - |
| RAM Size | 256 x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.4V ~ 5.25V |
| Data Converters | A/D 8x8b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 24-VFQFN Exposed Pad |
| Supplier Device Package | 24-QFN-EP (4x4) |
