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S3F84I8芯片简介：
SAMSUNG's S3C8-series of 8-bit single-chip CMOS microcontrollers offers a fast and efficient CPU, a wide range of integrated peripherals, and various mask-programmable ROM sizes. The major CPU features are:
　　- Efficient register-oriented architecture
　　- Selectable CPU clock sources
　　- Idle and Stop power-down mode released by interrupt or reset
　　- Built-in basic timer with watchdog function
　　A sophisticated interrupt structure recognizes up to eight-interrupt levels. Each level can have one or more interrupt sources and vectors. Fast interrupt processing (within a minimum of four CPU clocks) can be assigned to specific interrupt levels.
　　S3C84I8X by integrating the following peripheral modules with the powerful SAM8 core:
　　- Five programmable I/O ports (42SDIP: 32pins, 44QFP: 34pins) including ports shared with segment/common drive outputs.
　　- Four bit-programmable pins for external interrupts.
　　- One 8-bit basic timer for oscillation stabilization and watchdog function (system reset).
　　- Two 8-bit timer/counter and Two 16-bit timer/counter with selectable operating modes.
　　- One asynchronous UART and One synchronous SIO
　　- One 10-bit PWM output
　　- 10-bit 8-channel A/D converter
- Watch timer for real time