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| Part Number | AT80251G2D-RLTUM | AT87251G2D-RLTUM | AT80251G2D-RLTUL |
|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Atmel |
| Product Status | Obsolete | Obsolete | Active |
| Core Processor | C251 | C251 | C251 |
| Core Size | 8/16-Bit | 8/16-Bit | 8/16-Bit |
| Speed | 24MHz | 24MHz | 24MHz |
| Connectivity | EBI/EMI, I²C, Microwire, SPI, UART/USART | EBI/EMI, I²C, Microwire, SPI, UART/USART | EBI/EMI, I²C, Microwire, SPI, UART/USART |
| Peripherals | POR, PWM, WDT | POR, PWM, WDT | POR, PWM, WDT |
| Number of I/O | 32 | 32 | 32 |
| Program Memory Size | - | 32KB (32K x 8) | - |
| Program Memory Type | ROMless | OTP | ROMless |
| EEPROM Size | - | - | - |
| RAM Size | 1K x 8 | 1K x 8 | 1K x 8 |
| Voltage - Supply (Vcc/Vdd) | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 2.7V ~ 5.5V |
| Data Converters | - | - | - |
| Oscillator Type | Internal | Internal | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 44-LQFP | 44-LQFP | 44-LQFP |
| Supplier Device Package | 44-VQFP (10x10) | 44-VQFP (10x10) | 44-VQFP (10x10) |
