| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AT89C51IC2-RLTIL | ATMEL CORP | 80C51 | 8-Bit | 40MHz | I²C, SPI, UART/USART | 34 | 32KB (32K x 8) | FLASH | - | 1.25K x 8 | 2.7 V ~ 3.6 V | - | External | -40°C ~ 85°C | 44-LQFP | |
| AT89C51IC2-RLRUM | ATMEL CORP | 80C51 | 8-Bit | 40MHz | I²C, SPI, UART/USART | 34 | 32KB (32K x 8) | FLASH | - | 1.25K x 8 | 2.7 V ~ 5.5 V | - | External | -40°C ~ 85°C | 44-LQFP | |
| AT89C51IC2-SLRUM | ATMEL CORP | 80C51 | 8-Bit | 40MHz | I²C, SPI, UART/USART | 34 | 32KB (32K x 8) | FLASH | - | 1.25K x 8 | 2.7 V ~ 5.5 V | - | External | -40°C ~ 85°C | 44-LCC (J-Lead) | |
| AT89C51IC2-RLRUL | ATMEL CORP | 80C51 | 8-Bit | 40MHz | I²C, SPI, UART/USART | 34 | 32KB (32K x 8) | FLASH | - | 1.25K x 8 | 2.7 V ~ 3.6 V | - | External | -40°C ~ 85°C | 44-LQFP | |
| AT89C51IC2-SLRUL | ATMEL CORP | 80C51 | 8-Bit | 40MHz | I²C, SPI, UART/USART | 34 | 32KB (32K x 8) | FLASH | - | 1.25K x 8 | 2.7 V ~ 3.6 V | - | External | -40°C ~ 85°C | 44-LCC (J-Lead) | |
| AT89C51IC2-RLRIL | ATMEL CORP | 80C51 | 8-Bit | 40MHz | I²C, SPI, UART/USART | 34 | 32KB (32K x 8) | FLASH | - | 1.25K x 8 | 2.7 V ~ 3.6 V | - | External | -40°C ~ 85°C | 44-LQFP | |
| AT89C51IC2-SLSIL | ATMEL CORP | 80C51 | 8-Bit | 40MHz | I²C, SPI, UART/USART | 34 | 32KB (32K x 8) | FLASH | - | 1.25K x 8 | 2.7 V ~ 3.6 V | - | External | -40°C ~ 85°C | 44-LCC (J-Lead) | |
| AT89C51IC2-SLRIL | ATMEL CORP | 80C51 | 8-Bit | 40MHz | I²C, SPI, UART/USART | 34 | 32KB (32K x 8) | FLASH | - | 1.25K x 8 | 2.7 V ~ 3.6 V | - | External | -40°C ~ 85°C | 44-LCC (J-Lead) | |
| P89V662FBC,557 | NXP SEMICONDUCTORS | 8051 | 8-Bit | 40MHz | I²C, SPI, UART/USART | 36 | 32KB (32K x 8) | FLASH | - | 1K x 8 | 4.5 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-TQFP | |
| P89V660FBC,557 | NXP SEMICONDUCTORS | 8051 | 8-Bit | 40MHz | I²C, SPI, UART/USART | 36 | 16KB (16K x 8) | FLASH | - | 512 x 8 | 4.5 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-TQFP |
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