| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TSC87251G2D-L16CE | ATMEL CORP | C251 | 8/16-Bit | 16MHz | EBI/EMI, I²C, Microwire, SPI, UART/USART | 32 | 32KB (32K x 8) | OTP | - | 1K x 8 | 2.7 V ~ 5.5 V | - | Internal | 0°C ~ 70°C | 44-LQFP | |
| TSC87251G2D-L16CER | ATMEL CORP | C251 | 8/16-Bit | 16MHz | EBI/EMI, I²C, Microwire, SPI, UART/USART | 32 | 32KB (32K x 8) | OTP | - | 1K x 8 | 2.7 V ~ 5.5 V | - | Internal | 0°C ~ 70°C | 44-LQFP | |
| AT87C51RB2-RLTUL | ATMEL CORP | 80C51 | 8-Bit | 30/20MHz | UART/USART | 32 | 16KB (16K x 8) | OTP | - | 512 x 8 | 2.7 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-LQFP | |
| AT87C51RB2-RLTUM | ATMEL CORP | 80C51 | 8-Bit | 40/20MHz | UART/USART | 32 | 16KB (16K x 8) | OTP | - | 512 x 8 | 4.5 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-LQFP | |
| AT87C51RC2-RLTUL | ATMEL CORP | 80C51 | 8-Bit | 30/20MHz | UART/USART | 32 | 32KB (32K x 8) | OTP | - | 512 x 8 | 2.7 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-LQFP | |
| AT87C51RC2-RLTUM | ATMEL CORP | 80C51 | 8-Bit | 40/20MHz | UART/USART | 32 | 32KB (32K x 8) | OTP | - | 512 x 8 | 4.5 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-LQFP | |
| AT87C51RD2-RLTUL | ATMEL CORP | 80C51 | 8-Bit | 30/20MHz | UART/USART | 32 | 64KB (64K x 8) | OTP | - | 1K x 8 | 2.7 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-LQFP | |
| AT87C51RD2-RLTUM | ATMEL CORP | 80C51 | 8-Bit | 40/20MHz | UART/USART | 32 | 64KB (64K x 8) | OTP | - | 1K x 8 | 4.5 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-LQFP | |
| AT87C52X2-RLTUL | ATMEL CORP | 80C51 | 8-Bit | 30/20MHz | UART/USART | 32 | 8KB (8K x 8) | OTP | - | 256 x 8 | 2.7 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-LQFP | |
| AT87C52X2-RLTUM | ATMEL CORP | 80C51 | 8-Bit | 40/20MHz | UART/USART | 32 | 8KB (8K x 8) | OTP | - | 256 x 8 | 4.5 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-LQFP |
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