GPIO Type MCU Series
| IC Part | Memory | ROM | RAM | I/O | Interrupt | Timer | stack | wake | PWM | ADC | Serial | Special | Package |
| No. | Type | (Bit) | (Byte) | Pins | (Ex/In) | (8-bit) | up | I/O | Function | Count | |||
| FM8PS53E | OTP | 1K | 49 | 12 | 3(2/1) | 1 - | 5 | Yes | - | - | - | IRC | DIP/SOP-14 |
| FM8P54 | OTP | 512 | 49 | 12 | 3(2/1) | 1 - | 5 | Yes | - | - | - | - | DIP/SOP-18 |
| FM8P56 | OTP | 1k | 49 | 12 | 3(2/1) | 1 - | 5 | Yes | - | - | - | - | DIP/SOP-18 |
| FM8P54E | OTP | 512 | 49 | 16 | 3(2/1) | 1 - | 5 | Yes | - | - | - | IRC | DIP/SOP-18 |
| FM8PS56E | OTP | 512 | 49 | 16 | 3(2/1) | 1 - | 5 | Yes | - | - | - | IRC | DIP/SOP-18 |
| FM8P51 | OTP | 4k | 140 | 38 | 8(1/7) | 1*4 | 5 | Yes | 10*2 | 15bit RFC*19 |
SPI | - | DIP40 QFP44 |
| FM8P51 | OTP | 4k | 140 | 38 | 8(1/7) | 1*4 | 5 | Yes | 10*2 | 15bit RFC*19 |
SPI | - | DIP40 QFP44 |
| FM8P57 | OTP | 2k | 96 | 20 | 2(1/1) | 1 | 5 | Yes | - | - | - | - | DIP/SOP-28 |
| FM8P59 | OTP | 4k | 144 | 24 | 3(2/1) | 1 | 5 | Yes | - | - | - | - | DIP/SOP-28 32 |