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STC89LE52RC 数据表(PDF) 117 Page - STCmicro Technology Co,.Ltd |
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STC89LE52RC 数据表(HTML) 117 Page - STCmicro Technology Co,.Ltd |
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117 / 165 page ![]() STC MCU INTERNAL BUS SBUF ZERO DETECTOR TX CONTROL SHIFT START TX CLOCK TI D S Q CL RX CONTROL SHIFT LOAD SBUF START RX CLOCK RI INPUT SHIFT REG . (9 BITS) SBUF STC MCU INTERNAL BUS WRITE TO SBUF 1FFH ÷16 SHIFT LOAD SBUF READ SBUF SERIAL PORT INTERRUPT SEND DATA TB8 TXD ÷16 1-TO-0 TRANSITION DETECTOR SAMPLE BIT DETECTOR RXD STOP BIT GEN. ÷2 SMOD=0 SMOD=1 MODE 2 (SMOD IS PCON.7) SYSclk/2 WRITE TO SBUF SEND SHIFT DATA D1 D0 TXD D2 D3 D4 D5 D6 D7 START BIT STOP BIT TI TRANSMIT TX CLOCK D1 D0 RXD D2 D3 D4 D5 D6 D7 START BIT STOP BIT RX CLOCK BIT DETECTOR SAMPLE TIMES RECEIVE STOP BIT GEN TB8 RB8 SHIFT RI Serial Port Mode 2 117 |
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