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W83977 series datasheets. Manufacturer: Winbond Electronics.

W83977ATF-ASuper I/O chip: UART, IrDA, parallel port, keyboard controller, general purpose I/O ports, FDC in 128-pin PQFP package. Operational temperature range from 0°C to 70°C.Datasheet*)
W83977ATF-PSuper I/O chip: UART, IrDA, parallel port, keyboard controller, general purpose I/O ports, FDC in 128-pin PQFP package. Operational temperature range from 0°C to 70°C.Datasheet*)
W83977TF-AI/O chip which UART, IrDA, parallel port, keyboard controller, general purpose I/O ports in 128-pin PQFP package. Operational temperature range from 0°C to 70°C.Datasheet*)
W83977TF-AWI/O chip which UART, IrDA, parallel port, keyboard controller, general purpose I/O ports in 128-pin PQFP package. Operational temperature range from 0°C to 70°C.Datasheet*)
W83977TF-PI/O chip which UART, IrDA, parallel port, keyboard controller, general purpose I/O ports in 128-pin PQFP package. Operational temperature range from 0°C to 70°C.Datasheet*)
W83977TF-PWI/O chip which UART, IrDA, parallel port, keyboard controller, general purpose I/O ports in 128-pin PQFP package. Operational temperature range from 0°C to 70°C.Datasheet*)
W83977EF-AWI/O chip which UART, IrDA, parallel port, keyboard controller, general purpose I/O ports in 128-pin PQFP package. Operational temperature range from 0°C to 70°C.Datasheet*)
W83977EF-PWI/O chip which UART, IrDA, parallel port, keyboard controller, general purpose I/O ports in 128-pin PQFP package. Operational temperature range from 0°C to 70°C.Datasheet*)
W83977AWINBOND I/ODatasheet*)
W83977ATFWINBOND I/ODatasheet*)
W83977AFPLUG & PLAY 1.0A COMPLIANTDatasheet*)
W83977FPLUG & PLAY 1.0A COMPLIANTDatasheet*)
W83977EFWINBOND I/ODatasheet*)
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