| Part Number | AT91SAM7A1-AU | AT91SAM7A3-AU |
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology |
| Category | Embedded - Microcontrollers | Embedded - Microcontrollers |
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| Product Status | Obsolete | Obsolete |
| Core Processor | ARM7® | ARM7® |
| Core Size | 16/32-Bit | 16/32-Bit |
| Speed | 40MHz | 60MHz |
| Connectivity | CANbus, EBI/EMI, SPI, UART/USART | CANbus, I²C, Memory Card, SPI, SSC, UART/USART |
| Peripherals | POR, PWM, WDT | POR, PWM, WDT |
| Number of I/O | 49 | 62 |
| Program Memory Size | - | 256KB (256K x 8) |
| Program Memory Type | ROMless | Flash |
| EEPROM Size | - | - |
| RAM Size | 4K x 8 | 32K x 8 |
| Voltage - Supply (Vcc/Vdd) | 3V ~ 3.6V | 1.65V ~ 1.95V |
| Data Converters | A/D 8x10b | A/D 8x10b |
| Oscillator Type | Internal | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 144-LQFP | 100-LQFP |
| Supplier Device Package | 144-LQFP (20x20) | 100-LQFP (14x14) |