| Part Numbers | Manufacturer Name | Datasheet | Core Processor | Core Size | Speed | Connectivity | RAM Size | Number of I/O | Program Memory Size | Program Memory Type | EEPROM Size | Voltage - Supply (Vcc/Vdd) | Data Converters | Oscillator Type | Operating Temperature | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MK21DN512VLK5 | FREESCALE SEMICONDUCTOR INC | - | 32-Bit | 50MHz | I²C, IrDA, SPI, UART/USART, USB, USB OTG | 60 | 512KB (512K x 8) | FLASH | - | 64K x 8 | 1.71 V ~ 3.6 V | A/D 24x16b | Internal | -40°C ~ 105°C | 80-LQFP | |
| MK21DX128VLK5 | FREESCALE SEMICONDUCTOR INC | - | 32-Bit | 50MHz | I²C, IrDA, SPI, UART/USART, USB, USB OTG | 60 | 128KB (128K x 8) | FLASH | 4K x 8 | 32K x 8 | 1.71 V ~ 3.6 V | A/D 24x16b | Internal | -40°C ~ 105°C | 80-LQFP | |
| MK21DX128AVLK5 | FREESCALE SEMICONDUCTOR INC | - | 32-Bit | 50MHz | I²C, IrDA, SPI, UART/USART, USB, USB OTG | 60 | 128KB (128K x 8) | FLASH | 4K x 8 | 32K x 8 | 1.71 V ~ 3.6 V | A/D 24x16b | Internal | -40°C ~ 105°C | 80-LQFP | |
| MK21DX256VLK5 | FREESCALE SEMICONDUCTOR INC | - | 32-Bit | 50MHz | I²C, IrDA, SPI, UART/USART, USB, USB OTG | 60 | 256KB (256K x 8) | FLASH | 4K x 8 | 32K x 8 | 1.71 V ~ 3.6 V | A/D 24x16b | Internal | -40°C ~ 105°C | 80-LQFP | |
| MK21DX256AVLK5 | FREESCALE SEMICONDUCTOR INC | - | 32-Bit | 50MHz | I²C, IrDA, SPI, UART/USART, USB, USB OTG | 60 | 256KB (256K x 8) | FLASH | 4K x 8 | 32K x 8 | 1.71 V ~ 3.6 V | A/D 24x16b | Internal | -40°C ~ 105°C | 80-LQFP | |
| MK21DN512AVLK5 | FREESCALE SEMICONDUCTOR INC | - | 32-Bit | 50MHz | I²C, IrDA, SPI, UART/USART, USB, USB OTG | 60 | 512KB (512K x 8) | FLASH | - | 64K x 8 | 1.71 V ~ 3.6 V | A/D 24x16b | Internal | -40°C ~ 105°C | 80-LQFP |
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