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| PartNumber | PK21DX256VMB5 | PK21DX256V | PK21DX256VM89E |
| Description | RF Transceiver RF Transceiver 256Kb Flsh | ||
| Manufacturer | NXP | Freescale Semiconductor - NXP | - |
| Product Category | RF Transceiver | Embedded - Microcontrollers | - |
| RoHS | Y | - | - |
| Frequency Range | 50 MHz | - | - |
| Supply Voltage Min | 2.7 V | - | - |
| Supply Voltage Max | 5.5 V | - | - |
| Maximum Operating Temperature | + 105 C | - | - |
| Interface Type | I2C, I2S, SPI, UART, USB | - | - |
| Brand | NXP / Freescale | - | - |
| Moisture Sensitive | Yes | - | - |
| Product Type | RF Transceiver | - | - |
| Factory Pack Quantity | 1 | - | - |
| Subcategory | Wireless & RF Integrated Circuits | - | - |
| Series | - | Kinetis K20 | - |
| Packaging | - | Tray | - |
| Package Case | - | 121-LFBGA | - |
| Operating Temperature | - | -40°C ~ 105°C (TA) | - |
| Supplier Device Package | - | 121-MAPBGA (8x8) | - |
| Number of I O | - | 64 | - |
| Speed | - | 50MHz | - |
| EEPROM Size | - | 4K x 8 | - |
| Core Processor | - | - | |
| RAM Size | - | 32K x 8 | - |
| Program Memory Type | - | FLASH | - |
| Peripherals | - | DMA, I2S, LVD, POR, PWM, WDT | - |
| Connectivity | - | I2C, IrDA, SPI, UART/USART, USB, USB OTG | - |
| Voltage Supply Vcc Vdd | - | 1.71 V ~ 3.6 V | - |
| Core Size | - | 32-Bit | - |
| Program Memory Size | - | 256KB (256K x 8) | - |
| Data Converters | - | A/D 20x16b, D/A 1x12b | - |
| Oscillator Type | - | Internal | - |