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| Part Number | ATSAM3U4CA-AU | ATSAM3U4EA-AU | ATSAM3X4CA-AU | ATSAM3U4CA-CU | ATSAM3N4CA-AU | ATSAM3S4CA-AU | ATSAM3U1CA-AU | ATSAM3U2CA-AU |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Atmel | Microchip Technology | Atmel | Microchip Technology |
| Product Status | Active | Active | Active | Active | Obsolete | Active | Obsolete | Active |
| Core Processor | ARM® Cortex®-M3 | ARM® Cortex®-M3 | ARM® Cortex®-M3 | ARM® Cortex®-M3 | ARM® Cortex®-M3 | ARM® Cortex®-M3 | ARM® Cortex®-M3 | ARM® Cortex®-M3 |
| Core Size | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core |
| Speed | 96MHz | 96MHz | 84MHz | 96MHz | 48MHz | 64MHz | 96MHz | 96MHz |
| Connectivity | EBI/EMI, I²C, Memory Card, SPI, SSC, UART/USART, USB | EBI/EMI, I²C, Memory Card, SPI, SSC, UART/USART, USB | CANbus, Ethernet, I²C, IrDA, LINbus, Memory Card, SPI, SSC, UART/USART, USB | EBI/EMI, I²C, Memory Card, SPI, SSC, UART/USART, USB | I²C, IrDA, SPI, UART/USART | EBI/EMI, I²C, Memory Card, SPI, SSC, UART/USART, USB | EBI/EMI, I²C, Memory Card, SPI, SSC, UART/USART, USB | EBI/EMI, I²C, Memory Card, SPI, SSC, UART/USART, USB |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT | Brown-out Detect/Reset, DMA, POR, PWM, WDT | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT |
| Number of I/O | 57 | 96 | 63 | 57 | 79 | 79 | 57 | 57 |
| Program Memory Size | 256KB (256K x 8) | 256KB (256K x 8) | 256KB (256K x 8) | 256KB (256K x 8) | 256KB (256K x 8) | 256KB (256K x 8) | 64KB (64K x 8) | 128KB (128K x 8) |
| Program Memory Type | Flash | Flash | Flash | Flash | Flash | Flash | Flash | Flash |
| EEPROM Size | - | - | - | - | - | - | - | - |
| RAM Size | 52K x 8 | 52K x 8 | 64K x 8 | 52K x 8 | 24K x 8 | 48K x 8 | 20K x 8 | 36K x 8 |
| Voltage - Supply (Vcc/Vdd) | 1.62V ~ 3.6V | 1.62V ~ 3.6V | 1.62V ~ 3.6V | 1.62V ~ 3.6V | 1.62V ~ 3.6V | 1.62V ~ 3.6V | 1.62V ~ 3.6V | 1.62V ~ 3.6V |
| Data Converters | A/D 4x10b, 4x12b | A/D 8x10b, 8x12b | A/D 16x12b; D/A 2x12b | A/D 4x10b, 4x12b | A/D 16x10b; D/A 1x10b | A/D 15x10/12b; D/A 2x12b | A/D 4x10b, 4x12b | A/D 4x10b, 4x12b |
| Oscillator Type | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 100-LQFP | 144-LQFP | 100-LQFP | 100-TFBGA | 100-LQFP | 100-LQFP | 100-LQFP | 100-LQFP |
| Supplier Device Package | 100-LQFP (14x14) | 144-LQFP (20x20) | 100-LQFP (14x14) | 100-TFBGA (9x9) | 100-LQFP (14x14) | 100-LQFP (14x14) | 100-LQFP (14x14) | 100-LQFP (14x14) |
