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The SN8PC20 is a RISC-like high performance and low operating voltage 8-bit micro-controller (1.8V~3.6V @1MIPS). One clock per instruction cycle (1T) architecture will provide up to 8MIPS computation power. The device is designed with the excellent IC structure including the program memory up to 2K-word OTP ROM, data memory of 56-bytes RAM, one 8-bit timer counters (T0), a watchdog timer, two interrupt sources (T0, INT0), one channel duty/cycle programmable IR output (IROUT) with 400mA sunk current and 4-level stack buffers. There are four oscillator configurations to select for generating system clock, including High/Low Speed crystal, ceramic resonator or cost-saving RC. This device also includes an internal 8MHz RC oscillator for system clock and includes an internal low frequency RC oscillator for slow mode controlled by programming.

  • Operating voltage: 1.8V~3.6V at Fcpu = 1MIPS

  • ROM size: 2K * 16 bits

  • RAM size: 56 * 8 bits

  • 4-levels stack buffer

  • Bi-directional I/O: P0, P1, P5

  • Level trigger wakeup Input Port: P0, P1

  • External interrupt: P0

  • One channel IR output pin with 400mA sunk current

  • One external interrupts: INT0

  • One internal interrupts: T0

  • On-chip watch dog

  • Internal High Clock: 8MHz RC oscillator

  • External High Clock: Crystal type up to 8MHz

  • Internal Low Clock: RC oscillator, about 16KHz at 3V

  • One clock per instruction cycle

  • Most of instructions are one cycle only

  • All ROM area lookup table function(MOVC)

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