Comparison Edit
| Specification | Teensy 2.0 | Teensy++ 2.0 | Teensy 3.0 | Teensy 3.1 | Teensy LC |
|---|---|---|---|---|---|
| Processor | ATMEGA32U4 8 bit AVR |
AT90USB1286 8 bit AVR |
MK20DX128VLH5 32 bit ARM Cortex-M4 |
MK20DX256VLH7 32 bit ARM Cortex-M4 |
MKL26Z64VFT4 32 bit ARM Cortex-M0+ |
| CPU speed (MHz) | 16 | 16 | 48 | 72 | 48 |
| Available CPU speeds (MHz) |
16 | 16 | 48 | 24, 48, 72, 96 | 48 |
| Flash Memory (bytes) | 32256 | 130048 | 131072 | 262144 | 63488 |
| RAM Memory (bytes) | 2560 | 8192 | 16384 | 65536 | 8192 |
| EEPROM (bytes) | 1024 | 4096 | 2048 | 2048 | 128 (emulated) |
| I/O | 25 | 46 | 34 | 34 | 27 |
| I/O level | 5V | 5V | 3.3V | 3.3V (5V tolerant) | 3.3V + one 5V |
| Analog In | 12 | 8 | 14 | 21 | 13 |
| PWM | 7 | 9 | 10 | 12 | 10 |
| UART | 1 | 1 | 3 | 3 | 3 |
| I2C | 1 | 1 | 1 | 2 | 2 |
| SPI | 1 | 1 | 1 | 1 | 2 |