| Manufacturer | NXP USA Inc. |
| Series | Kinetis K20 |
| Packaging | Tray |
| Part Status | Obsolete |
| Core Processor | ARM® Cortex®-M4 |
| Core Size | 32-Bit |
| Speed | 50MHz |
| Connectivity | I²C, IrDA, SPI, UART/USART, USB, USB OTG |
| Peripherals | DMA, I²S, LVD, POR, PWM, WDT |
| Number of I/O | 64 |
| Program Memory Size | 256KB (256K x 8) |
| Program Memory Type | FLASH |
| EEPROM Size | 4K x 8 |
| RAM Size | 32K x 8 |
| Voltage - Supply (Vcc/Vdd) | 1.71 V ~ 3.6 V |
| Data Converters | A/D 20x16b, D/A 1x12b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 105°C (TA) |
| Package / Case | 121-LFBGA |
| Supplier Device Package | 121-MAPBGA (8x8) |
| Base Part Number | PK21DX256 |
IC MCU 32BIT 256KB FLASH 121BGA - ARM® Cortex®-M4 Kinetis K20 Microcontroller IC 32-Bit 50MHz 256KB (256K x 8) FLASH 121-MAPBGA (8x8)
Integrated circuits PK21DX256VMB5
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