Holtek
| Device Code | HT66F0021 |
| Family | HT66F |
| Protocol(s) | FlashRunner 2.0: TYPE23 |
| Memory Size | FLASH: 1 KW, EEPROM: 32 W, OPTIONS: 16 W |
| Algorithm | FlashRunner 2.0: HT66 |
| Commercial Class | Mass Market |
| Big-Size Memory | No |
Availability
| FlashRunner HS, FlashRunner NXG, FlashRunner 2.0 | Available |
| FlashRunner CUBE | Available in 20 days |