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| PartNumber | AT91SAM7XC256B-CU | AT91SAM7XC256B-AU | AT91SAM7XC256B-AU-999 |
| Description | ARM Microcontrollers - MCU IND TEMP MRL B | ARM Microcontrollers - MCU IND TEMP MRL B | IC MCU 32BIT 256KB FLASH 100LQFP |
| Manufacturer | Microchip | Microchip | - |
| Product Category | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | - |
| Shipping Restrictions | - | ||
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | TFBGA-100 | LQFP-100 | - |
| Series | SAM7X/XC | SAM7X/XC | - |
| Core | ARM7TDMI | ARM7TDMI | - |
| Data Bus Width | 32 bit | 32 bit | - |
| Maximum Clock Frequency | 55 MHz | 55 MHz | - |
| Program Memory Size | 256 kB | 256 kB | - |
| Data RAM Size | 64 kB | 64 kB | - |
| Number of I/Os | 62 I/O | 62 I/O | - |
| Operating Supply Voltage | 1.8 V | 1.8 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Program Memory Type | Flash | Flash | - |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | - |
| Data RAM Type | SRAM | SRAM | - |
| Interface Type | CAN, Ethernet, SPI, TWI, USART, USB | CAN, Ethernet, SPI, TWI, USART, USB | - |
| Analog Supply Voltage | 3.3 V | 3.3 V | - |
| I/O Voltage | 3.3 V | 3.3 V | - |
| Moisture Sensitive | Yes | Yes | - |
| Number of Timers/Counters | 3 Timer | 3 Timer | - |
| Processor Series | 91S | 91S | - |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | - |
| Factory Pack Quantity | 260 | 180 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Supply Voltage Max | 1.95 V | 1.95 V | - |
| Supply Voltage Min | 1.65 V | 1.65 V | - |
| RoHS | - | Y | - |
| Unit Weight | - | 0.046530 oz | - |