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W561S15 Datasheet(PDF) 4 Page - Winbond |
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W561S15 Datasheet(HTML) 4 Page - Winbond |
4 / 7 page W561XXX - 4 - BLOCK DIAGRAM I/O Controller TrueMelody Generator RAM Special Register Timing Generator OSCI OSCO P0 P1 P2 P3 Synthesizer II Synthesizer I ALU Timer ROM Timbre Table DAC1 DAC2 OSCSEL PAD DESCRIPTION PARAMETER I/O DESCRIPTION TEST I Test pin, internally pulled low P0.0 −P0.3 I Interruptable input pins, internally pulled high. P1.0 −P1.3 I/O I/O multiplexed port 1. The port 1 is interruptable, if selected as input pins P2.0 −P2.3 I/O I/O multiplexed port 2. P3.0 −P3.3 O Output port 3. VSS - Negative power supply. RESET I Reset all, functions as POR (Power On Reset), internally pulled high. VDD - Positive power supply. OSCI I Connect ROSC to VDD or Crystal between OSCI & OSCO to generate OSCO O the 3 MHz master frequency. DAC1 O Current output of channel 1 for driving an external speaker DAC2 O Current output of channel 2 for driving an external speaker OSCSEL I Oscillator type selecting pin, internally kept floating. Connect to VDD to select Crystal type, connect to GND to select ring oscillator type. |
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