| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DS2251T-128-16# | MAXIM INTEGRATED PRODUCTS INC | 8051 | 8-Bit | 16MHz | SIO, UART/USART | 32 | 128KB (128K x 8) | NVSRAM | - | - | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 72-SIMM | |
| DS2251T-32-16 | MAXIM INTEGRATED PRODUCTS INC | 8051 | 8-Bit | 16MHz | SIO, UART/USART | 32 | 32KB (32K x 8) | NVSRAM | - | - | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 72-SIMM | |
| DS2251T-32-16# | MAXIM INTEGRATED PRODUCTS INC | 8051 | 8-Bit | 16MHz | SIO, UART/USART | 32 | 32KB (32K x 8) | NVSRAM | - | - | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 72-SIMM | |
| DS2251T-64-16 | MAXIM INTEGRATED PRODUCTS INC | 8051 | 8-Bit | 16MHz | SIO, UART/USART | 32 | 64KB (64K x 8) | NVSRAM | - | - | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 72-SIMM | |
| DS2251T-64-16# | MAXIM INTEGRATED PRODUCTS INC | 8051 | 8-Bit | 16MHz | SIO, UART/USART | 32 | 64KB (64K x 8) | NVSRAM | - | - | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 72-SIMM | |
| DS2251T-128-16 | MAXIM INTEGRATED PRODUCTS INC | 8051 | 8-Bit | 16MHz | SIO, UART/USART | 32 | 128KB (128K x 8) | NVSRAM | - | - | 4.5 V ~ 5.5 V | - | External | 0°C ~ 70°C | 72-SIMM |
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