| Part Numbers | Manufacturer Name | Datasheet | Core Processor | Core Size | Speed | Connectivity | RAM Size | Number of I/O | Program Memory Size | Program Memory Type | EEPROM Size | Voltage - Supply (Vcc/Vdd) | Data Converters | Oscillator Type | Operating Temperature | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| W79E659A40FL | NUVOTON TECHNOLOGY CORP | 8051 | 8-Bit | 40MHz | EBI/EMI, I²C, UART/USART | 60 | 32KB (32K x 8) | FLASH | - | 1.25K x 8 | 4.5 V ~ 5.5 V | A/D 8x10b | Internal | 0°C ~ 70°C | 100-BQFP | |
| W79E658A40FL | NUVOTON TECHNOLOGY CORP | 8051 | 8-Bit | 40MHz | EBI/EMI, I²C, UART/USART | 60 | 128KB (128K x 8) | FLASH | - | 1.25K x 8 | 4.5 V ~ 5.5 V | A/D 8x10b | Internal | 0°C ~ 70°C | 100-BQFP | |
| W79L658A25FL | NUVOTON TECHNOLOGY CORP | 8051 | 8-Bit | 25MHz | EBI/EMI, I²C, UART/USART | 60 | 128KB (128K x 8) | FLASH | - | 1.25K x 8 | 3 V ~ 4.5 V | A/D 8x10b | Internal | 0°C ~ 70°C | 44-LCC (J-Lead) | |
| W79L659A25FL | NUVOTON TECHNOLOGY CORP | 8051 | 8-Bit | 25MHz | EBI/EMI, I²C, UART/USART | 60 | 32KB (32K x 8) | FLASH | - | 1.25K x 8 | 3 V ~ 4.5 V | A/D 8x10b | Internal | 0°C ~ 70°C | 44-LCC (J-Lead) | |
| P80C552IFA/08,512 | NXP SEMICONDUCTORS | 8051 | 8-Bit | 24MHz | EBI/EMI, I²C, UART/USART | 40 | - | ROMless | - | 256 x 8 | 4.5 V ~ 5.5 V | A/D 8x10b | Internal | -40°C ~ 85°C | 68-LCC (J-Lead) | |
| P87C554SFAA,512 | NXP SEMICONDUCTORS | 8051 | 8-Bit | 16MHz | EBI/EMI, I²C, UART/USART | 40 | 16KB (16K x 8) | OTP | - | 512 x 8 | 2.7 V ~ 5.5 V | A/D 8x10b | Internal | -40°C ~ 85°C | 68-LCC (J-Lead) | |
| P80C552EBA/08,512 | NXP SEMICONDUCTORS | 8051 | 8-Bit | 16MHz | EBI/EMI, I²C, UART/USART | 40 | - | ROMless | - | 256 x 8 | 4.5 V ~ 5.5 V | A/D 8x10b | Internal | 0°C ~ 70°C | 68-LCC (J-Lead) | |
| P80C552EBB/08,557 | NXP SEMICONDUCTORS | 8051 | 8-Bit | 16MHz | EBI/EMI, I²C, UART/USART | 40 | - | ROMless | - | 256 x 8 | 4.5 V ~ 5.5 V | A/D 8x10b | Internal | 0°C ~ 70°C | 80-BQFP | |
| P80C552IBA/08,512 | NXP SEMICONDUCTORS | 8051 | 8-Bit | 24MHz | EBI/EMI, I²C, UART/USART | 40 | - | ROMless | - | 256 x 8 | 4.5 V ~ 5.5 V | A/D 8x10b | Internal | 0°C ~ 70°C | 68-LCC (J-Lead) | |
| P87C552SBAA,512 | NXP SEMICONDUCTORS | 8051 | 8-Bit | 16MHz | EBI/EMI, I²C, UART/USART | 40 | 8KB (8K x 8) | OTP | - | 256 x 8 | 2.7 V ~ 5.5 V | A/D 8x10b | Internal | 0°C ~ 70°C | 68-LCC (J-Lead) |
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