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| 8-bit K Series | 16-bit K Series | 32-bit K Series | |
|---|---|---|---|
| ROM size / ROM type | 1 to 128 KB flash memory | 64 to 512 KB flash memory | 64 to 256 KB flash memory |
| RAM size | 128 B to 7 KB | 4 to 30 KB | 4 to 16 KB |
| Max. clock / min. instruction time | 20 MHz/100 ns | 20 MHz/50 ns | 20 MHz/50 ns |
| Pin count | 10 to 80 pins | 64 to 144 pins | 64 to 144 pins |
| Supply voltage | 1.8 to 5.5V | 1.8 to 5.5V | 2.7 to 5.5V |