| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AT89C51ED2-SMSUM | ATMEL CORP | 80C51 | 8-Bit | 60MHz | SPI, UART/USART | 50 | 64KB (64K x 8) | FLASH | 2K x 8 | 2K x 8 | 2.7 V ~ 5.5 V | - | External | -40°C ~ 85°C | 68-PLCC | |
| T89C51RD2-SMSIM | ATMEL CORP | 80C51 | 8-Bit | 40MHz | SPI, UART/USART | 48 | 64KB (64K x 8) | FLASH | 2K x 8 | 1.25K x 8 | 4.5 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 68-PLCC | |
| AT89C51ED2-SMRIM | ATMEL CORP | 80C51 | 8-Bit | 60MHz | SPI, UART/USART | 50 | 64KB (64K x 8) | FLASH | 2K x 8 | 2K x 8 | 2.7 V ~ 5.5 V | - | External | -40°C ~ 85°C | 68-PLCC | |
| AT89C51ED2-SMRUM | ATMEL CORP | 80C51 | 8-Bit | 60MHz | SPI, UART/USART | 50 | 64KB (64K x 8) | FLASH | 2K x 8 | 2K x 8 | 2.7 V ~ 5.5 V | - | External | -40°C ~ 85°C | 68-PLCC | |
| W79E548A40PL | NUVOTON TECHNOLOGY CORP | 8052 | 8-Bit | 40MHz | EBI/EMI, Serial Port | 60 | 64KB (64K x 8) | FLASH | - | 1.25K x 8 | 3 V ~ 5.5 V | - | Internal | 0°C ~ 70°C | 68-PLCC | |
| W79E549A40PL | NUVOTON TECHNOLOGY CORP | 8051 | 8-Bit | 40MHz | EBI/EMI, Serial Port | 60 | 32KB (32K x 8) | FLASH | - | 1.25K x 8 | 3 V ~ 5.5 V | - | Internal | 0°C ~ 70°C | 68-PLCC | |
| W79L548A25PL | NUVOTON TECHNOLOGY CORP | 8052 | 8-Bit | 25MHz | EBI/EMI, Serial Port | 60 | 64KB (64K x 8) | FLASH | - | 1.25K x 8 | 3 V ~ 5.5 V | - | Internal | 0°C ~ 70°C | 68-PLCC | |
| W79L549A25PL | NUVOTON TECHNOLOGY CORP | 8051 | 8-Bit | 25MHz | EBI/EMI, Serial Port | 60 | 32KB (32K x 8) | FLASH | - | 1.25K x 8 | 3 V ~ 5.5 V | - | Internal | 0°C ~ 70°C | 68-PLCC |
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