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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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P87LPC779FDH 데이터시트(PDF) 55 Page - NXP Semiconductors |
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P87LPC779FDH 데이터시트(HTML) 55 Page - NXP Semiconductors |
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55 / 74 page  Philips Semiconductors P87LPC779 CMOS single-chip 8-bit microcontroller Product data Rev. 02 — 03 May 2004 55 of 74 9397 750 13213 © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Fig 24. Serial port mode 1. 80C51 INTERNAL BUS SBUF ZERO DETECTOR TxD 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 transmit RxD P3.0 alt input function 80C51 internal bus DATA TB8 ÷16 ÷16 ÷2 timer 1 overflow SMOD1 = 0 SMOD1 = 1 1-TO-0 TRANSITION DETECTOR BIT DETECTOR 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 write to SBUF 002aaa642 ÷16 reset |
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