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| Part Number | MK21DX256VLK5 | MK22DX256VLK5 | MK21DX256AVLK5 |
|---|---|---|---|
| Manufacturer | NXP USA Inc. | NXP USA Inc. | NXP USA Inc. |
| Product Status | Obsolete | Active | Active |
| Core Processor | ARM® Cortex®-M4 | ARM® Cortex®-M4 | ARM® Cortex®-M4 |
| Core Size | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core |
| Speed | 50MHz | 50MHz | 50MHz |
| Connectivity | I²C, IrDA, SPI, UART/USART, USB, USB OTG | I²C, IrDA, SPI, UART/USART, USB, USB OTG | I²C, IrDA, SPI, UART/USART, USB, USB OTG |
| Peripherals | DMA, I²S, LVD, POR, PWM, WDT | DMA, I²S, LVD, POR, PWM, WDT | DMA, I²S, LVD, POR, PWM, WDT |
| Number of I/O | 60 | 56 | 60 |
| Program Memory Size | 256KB (256K x 8) | 256KB (256K x 8) | 256KB (256K x 8) |
| Program Memory Type | Flash | Flash | Flash |
| EEPROM Size | 4K x 8 | 4K x 8 | 4K x 8 |
| RAM Size | 32K x 8 | 32K x 8 | 32K x 8 |
| Voltage - Supply (Vcc/Vdd) | 1.71V ~ 3.6V | 1.71V ~ 3.6V | 1.71V ~ 3.6V |
| Data Converters | A/D 20x16b | A/D 20x16b; D/A 1x12b | A/D 20x16b |
| Oscillator Type | Internal | Internal | Internal |
| Operating Temperature | -40°C ~ 105°C (TA) | -40°C ~ 105°C (TA) | -40°C ~ 105°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 80-LQFP | 80-LQFP | 80-LQFP |
| Supplier Device Package | 80-FQFP (12x12) | 80-FQFP (12x12) | 80-FQFP (12x12) |
