
32-bit ARM Cortex-M4 RISC microcontroller featuring 256KB Flash program memory and 68KB RAM. This MCU operates at up to 50 MHz and supports multiple voltage levels (1.8V/2.5V/3.3V). It offers 7 timers and interfaces including I2C (2), SPI (2), UART (4), I2S (1), and USB (1). Packaged in an 80-pin LQFP (Low Profile Quad Flat Package) with a 0.5mm pin pitch, it is designed for surface mounting. Operating temperature range is -40°C to 105°C.
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NXP PK21DX256VLK5 technical specifications.
| Basic Package Type | Lead-Frame SMT |
| Package Family Name | QFP |
| Package/Case | LQFP |
| Package Description | Low Profile Quad Flat Package |
| Lead Shape | Gull-wing |
| Pin Count | 80 |
| PCB | 80 |
| Package Length (mm) | 12 |
| Package Width (mm) | 12 |
| Package Height (mm) | 1.45(Max) |
| Seated Plane Height (mm) | 1.6(Max) |
| Pin Pitch (mm) | 0.5 |
| Package Weight (g) | 0.491 |
| Package Material | Plastic |
| Mounting | Surface Mount |
| Family Name | K21 |
| Data Bus Width | 32bit |
| Instruction Set Architecture | RISC |
| Maximum Clock Rate | 50MHz |
| Maximum CPU Frequency | 50MHz |
| Device Core | ARM Cortex M4 |
| Program Memory Type | Flash |
| Program Memory Size | 256KB |
| RAM Size | 68KB |
| Core Architecture | ARM |
| Programmability | Yes |
| Number of Timers | 7 |
| Interface Type | I2C/I2S/SPI/UART/USB |
| CAN | 0 |
| I2C | 2 |
| SPI | 2 |
| Ethernet | 0 |
| UART | 4 |
| USART | 0 |
| USB | 1 |
| I2S | 1 |
| Max Operating Supply Voltage | 3.6V |
| Min Operating Temperature | -40°C |
| Max Operating Temperature | 105°C |
| Number of ADCs | Single |
| Cage Code | H1R01 |
| EU RoHS | Yes |
| HTS Code | 8542310001 |
| Schedule B | 8542310000 |
| Automotive | No |
| AEC Qualified | No |
| PPAP | No |
| RoHS Versions | 2011/65/EU, 2015/863 |
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