世纪芯成功解密FM8P56E 芯片

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　FM8P56E 8bit MCU
　　˙Only 42 single word instructions
　　˙5-level deep hardware stack
　　Device Pins # I/O # EPROM/ROM (Byte) RAM (Byte)
　　FM8PS54/S54E 18 16 512 49
　　FM8PS56/S56E 18 16 1K 49
　　˙8-bit real time clock/counter with 8-bit programmable prescaler
　　˙On chip Watchdog Timer (WDT) with internal oscillator for reliable operation and soft-ware watch-dog enable/disable control
　　˙2 I/O ports with independent direction control
　　˙Soft-ware I/O pull-high/pull-down or open-drain control
　　˙1 internal interrupt source; 2 external interrupt source
　　˙Wake-up from SLEEP mode
　　˙Built-in 8MHz, 4MHz, 1MHz, and 455KHz internal RC oscillator