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P87LPC764FN 数据表(PDF) 41 Page - NXP Semiconductors |
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P87LPC764FN 数据表(HTML) 41 Page - NXP Semiconductors |
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41 / 60 page ![]() Philips Semiconductors Product data P87LPC764 Low power, low price, low pin count (20 pin) microcontroller with 4 kbyte OTP 2003 Sep 03 40 BIT DETECTOR SU01181 TRANSMIT START BIT STOP BIT TX CLOCK WRITE TO SBUF SEND DATA SHIFT TxD TI D0 D1 D5 D2 D6 D3 D4 D7 RECEIVE RX CLOCK SHIFT RI BIT DETECTOR SAMPLE TIMES START BIT STOP BIT RxD D0 D1 D5 D2 D6 D3 D4 D7 ÷ 16 RESET TB8 STOP BIT GEN. RB8 80C51 INTERNAL BUS WRITE TO SBUF SBUF ZERO DETECTOR TxD P1.0 ALT OUTPUT FUNCTION TX CONTROL S TX CLOCK START Q CL D SERIAL PORT INTERRUPT SHIFT SEND LOAD SBUF TI INPUT SHIFT REGISTER START RI LOAD SBUF SHIFT RX CLOCK 1FFH RX CONTROL SBUF READ SBUF RxD P1.1 ALT INPUT FUNCTION 80C51 INTERNAL BUS DATA TB8 ÷16 ÷16 ÷2 TIMER 1 OVERFLOW SMOD1 = 0 SMOD1 = 1 1-TO-0 TRANSITION DETECTOR Figure 32. Serial Port Mode 3 |
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