| Part Number | AT91SAM7SE256B-AU | AT91SAM7SE256B-CU | 
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | 
| Category | Embedded - Microcontrollers | Embedded - Microcontrollers | 
|   |   | |
| Product Status | Active | Active | 
| Core Processor | ARM7® | ARM7® | 
| Core Size | 16/32-Bit | 16/32-Bit | 
| Speed | 55MHz | 55MHz | 
| Connectivity | EBI/EMI, I²C, SPI, SSC, UART/USART, USB | EBI/EMI, I²C, SPI, SSC, UART/USART, USB | 
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT | 
| Number of I/O | 88 | 88 | 
| Program Memory Size | 256KB (256K x 8) | 256KB (256K x 8) | 
| Program Memory Type | Flash | Flash | 
| EEPROM Size | - | - | 
| RAM Size | 32K x 8 | 32K x 8 | 
| Voltage - Supply (Vcc/Vdd) | 1.65V ~ 1.95V | 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 | 128-LQFP | 144-LFBGA | 
| Supplier Device Package | 128-LQFP (20x14) | 144-LFBGA (10x10) |