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UM6551 series datasheets. Manufacturer: United Microelectronics Corp..
UM6551 | Clock rate: 1MHz; -0.3 to +7.0V; asynchronous communication inteface adapter (ACIA) in 28-pin PDIP package. Operational temperature range from 0°C to 70°C. | Datasheet*) |
UM6551A | Clock rate: 2MHz; -0.3 to +7.0V; asynchronous communication inteface adapter (ACIA) in 28-pin PDIP package. Operational temperature range from 0°C to 70°C. | Datasheet*) |
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