【 Features 】 |
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8-bit 65C02 CPU with 3 MHz operating frequency |
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Two clock sources: |
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-External 6 MHz crystal (or resonator) oscillator is used for PS/2 |
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-Internal 12 MHz RC oscillator (default), and its tolerance is ±10% before adjustment |
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256 bytes SRAM |
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8K bytes Flash ROM memory |
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USB Interface (USB Spec. Version 2.0 Low-Speed compliance) |
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Embedded USB function with three endpoints (one control endpoint and two Interrupt IN endpoints) |
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36 programmable I/O pins (P00~P07, P10~P17, P20~P27, P30~P37 and P50~P53), and they can be programmed to big, small resistance or no pull-up resistor |
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8 with interrupt capability in input mode (P20~P27). |
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12 high drive/sink capability pins: P30~P37 and P50~P53 |
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Built-in fixed 240 Hz PWM and 7-bit duty controller in P30~P37 and P50~P53 |
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Watchdog Timer |
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One 8-bit programmable Timer |
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Low Voltage Reset (LVR) |
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Power On Reset (POR) |