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| Part Number | AT91M55800A-33CJ-999 |
| Datasheet | AT91M55800A-33CJ-999 datasheet |
| Description | IC MCU 16/32BIT ROMLESS 176BGA |
| Manufacturer | Microchip Technology |
| Series | AT91 |
| Part Status | Active |
| Core Processor | ARM7® |
| Core Size | 16/32-Bit |
| Speed | 33MHz |
| Connectivity | EBI/EMI, SPI, UART/USART |
| Peripherals | POR, WDT |
| Number of I/O | 58 |
| Program Memory Size | - |
| Program Memory Type | ROMless |
| EEPROM Size | - |
| RAM Size | 8K x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 3.6V |
| Data Converters | A/D 8x10b; D/A 2x10b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | Surface Mount |
| Supplier Device Package | 176-LFBGA |
| Base Part Number | 176-BGA (13x13) |