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| Part Number | P80C557E4EFB/01,51 | P80C557E4EFB/01,55 |
|---|---|---|
| Manufacturer | NXP USA Inc. | NXP USA Inc. |
| Product Status | Obsolete | Obsolete |
| Core Processor | 8051 | 8051 |
| Core Size | 8-Bit | 8-Bit |
| Speed | 16MHz | 16MHz |
| Connectivity | EBI/EMI, I²C, UART/USART | EBI/EMI, I²C, UART/USART |
| Peripherals | POR, PWM, WDT | POR, PWM, WDT |
| Number of I/O | 40 | 40 |
| Program Memory Size | - | - |
| Program Memory Type | ROMless | ROMless |
| EEPROM Size | - | - |
| RAM Size | 1K x 8 | 1K x 8 |
| Voltage - Supply (Vcc/Vdd) | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Data Converters | A/D 8x10b | A/D 8x10b |
| Oscillator Type | External | External |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 80-BQFP | 80-BQFP |
| Supplier Device Package | 80-PQFP (14x20) | 80-PQFP (14x20) |
