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87LPC769 Datasheet(PDF) 47 Page - NXP Semiconductors |
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87LPC769 Datasheet(HTML) 47 Page - NXP Semiconductors |
47 / 61 page Philips Semiconductors Preliminary specification 87LPC769 Low power, low price, low pin count (20 pin) microcontroller with 4 kB OTP 8-bit A/D, and DAC 2001 Jan 11 44 START BIT SU01180 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 PHASE 2 CLOCK (1/2 fOSC) 1-TO-0 TRANSITION DETECTOR BIT DETECTOR STOP BIT GEN. SMOD1 = 0 SMOD1 = 1 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 STOP BIT RxD D0 D1 D5 D2 D6 D3 D4 D7 ÷ 16 RESET TB8 STOP BIT GEN. RB8 Figure 34. Serial Port Mode 2 |
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