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| Manufacturer | Microchip Technology |
| Packaging | Tray |
| Series | AVR® |
| Part Status | Obsolete |
| Applications | Keyboard Controller |
| Core Processor | AVR |
| Program Memory Type | Mask ROM (16 kB) |
| Controller Series | AT43USB |
| RAM Size | 512 x 8 |
| Interface | USB |
| Number of I/O | 32 |
| Voltage - Supply | 4.4 V ~ 5.25 V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package / Case | 48-LQFP |
| Supplier Device Package | 48-LQFP (7x7) |
| Standard Package | 250 |
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