| Mfr | Nuvoton Technology Corporation |
| Series | NuMicro MS51 |
| Packaging | Tube |
| Part Status | Active |
| DigiKey Programmable | Not Verified |
| Core Processor | 8051 |
| Core Size | 8-Bit |
| Speed | 24MHz |
| Connectivity | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, LVR, POR, PWM, WDT |
| Number of I/O | 26 |
| Program Memory Size | 32KB (32K x 8) |
| Program Memory Type | FLASH |
| EEPROM Size | - |
| RAM Size | 2K x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.4V ~ 5.5V |
| Data Converters | A/D 15x12b SAR |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 105°C (TA) |
| Mounting Type | Surface Mount |
| Supplier Device Package | 28-TSSOP |
| Package / Case | 28-TSSOP (0.173", 4.40mm Width) |
| Base Product Number | MS51EC0 |