| Series | PSOC®1 CY8C21xxx |
| Package | Bulk |
| Part Status | Active |
| Core Processor | M8C |
| Core Size | 8-Bit |
| Speed | 12MHz |
| Connectivity | I²C, IrDA, SPI, UART/USART |
| Peripherals | LVD, POR, PWM, WDT |
| Number of I/O | 24 |
| Program Memory Size | 8KB (8K x 8) |
| Program Memory Type | FLASH |
| EEPROM Size | - |
| RAM Size | 512 x 8 |
| Voltage - Supply (Vcc/Vdd) | 4.75V ~ 5.25V |
| Data Converters | - |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 28-SSOP (0.209", 5.30mm Width) |
| Supplier Device Package | 28-SSOP |
