| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AT89C51RC-24JU | ATMEL CORP | 8051 | 8-Bit | 24MHz | SPI, UART/USART | 32 | 32KB (32K x 8) | FLASH | - | 512 x 8 | 4 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-LCC (J-Lead) | |
| AT89C51RC-24AU | ATMEL CORP | 8051 | 8-Bit | 24MHz | SPI, UART/USART | 32 | 32KB (32K x 8) | FLASH | - | 512 x 8 | 4 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-TQFP | |
| AT89LP51RC2-20MU | ATMEL CORP | 8051 | 8-Bit | 20MHz | EBI/EMI, I²C, SPI, UART/USART | 40 | 32KB (32K x 8) | FLASH | - | 1.375K x 8 | 2.4 V ~ 5.5 V | A/D 7x10b | Internal | -40°C ~ 85°C | 44-VFQFN Exposed Pad | |
| AT89LP51RC2-20AU | ATMEL CORP | 8051 | 8-Bit | 20MHz | EBI/EMI, I²C, SPI, UART/USART | 40 | 32KB (32K x 8) | FLASH | - | 1.375K x 8 | 2.4 V ~ 5.5 V | A/D 7x10b | Internal | -40°C ~ 85°C | 44-TQFP | |
| AT89LP51RC2-20AAU | ATMEL CORP | 8051 | 8-Bit | 20MHz | EBI/EMI, I²C, SPI, UART/USART | 40 | 32KB (32K x 8) | FLASH | - | 1.375K x 8 | 2.4 V ~ 5.5 V | A/D 7x10b | Internal | -40°C ~ 85°C | 44-LQFP | |
| AT89LP51RC2-20PU | ATMEL CORP | 8051 | 8-Bit | 20MHz | EBI/EMI, I²C, SPI, UART/USART | 37 | 32KB (32K x 8) | FLASH | - | 1.375K x 8 | 2.4 V ~ 5.5 V | A/D 7x10b | Internal | -40°C ~ 85°C | 40-DIP (0.540,13.72mm) | |
| AT89LP3240-20MU | ATMEL CORP | 8051 | 8-Bit | 20MHz | I²C, SPI, UART/USART | 38 | 32KB (32K x 8) | FLASH | 8K x 8 | 4.25K x 8 | 2.4 V ~ 3.6 V | A/D 8x10b | Internal | -40°C ~ 85°C | 44-VFQFN Exposed Pad | |
| AT89LP3240-20PU | ATMEL CORP | 8051 | 8-Bit | 20MHz | I²C, SPI, UART/USART | 38 | 32KB (32K x 8) | FLASH | 8K x 8 | 4.25K x 8 | 2.4 V ~ 3.6 V | A/D 8x10b | Internal | -40°C ~ 85°C | 40-DIP (0.540,13.72mm) | |
| AT89LP3240-20AU | ATMEL CORP | 8051 | 8-Bit | 20MHz | I²C, SPI, UART/USART | 38 | 32KB (32K x 8) | FLASH | 8K x 8 | 4.25K x 8 | 2.4 V ~ 3.6 V | A/D 8x10b | Internal | -40°C ~ 85°C | 44-TQFP | |
| AT89LP3240-20JU | ATMEL CORP | 8051 | 8-Bit | 20MHz | I²C, SPI, UART/USART | 38 | 32KB (32K x 8) | FLASH | 8K x 8 | 4.25K x 8 | 2.4 V ~ 3.6 V | A/D 8x10b | Internal | -40°C ~ 85°C | 44-LCC (J-Lead) |
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