电子秤139

A B C D E F G H J K B C D E F G H J KA FILE NAME: BY: DATE: PAGE: mpx4115_test.DSN 2009-3-18 yiwei F:\2 \1 \86 \ \LCD+ADC0832\mpx4115_test.DSNPATH: 1 of 1 REV: 1.0 TIME: 0:33:36 DESIGN TITLE: MPX4115 0 1 2 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 3 9 p0[0..7] P 00 P 01 P 02 P 03 P 04 P 05 P 06 P 07 P1.0 P1.1 P1.2 P1.3 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 P00 P01 P02 P03 P04 P05 P06 P07 P 1. 4 P 1. 5 P 1. 6 P 1. 7 GND GND VCC X1 CRYSTAL C1 22p C2 22pGND V C C C3 22u R2 10k D 7 14 D 6 13 D 5 12 D 4 11 D 3 10 D 2 9 D 1 8 D 0 7 E 6 RW 5 R S 4 V SS 1 V D D 2 V EE 3 LCD1 LM016L RV2 10k 2 3 4 5 6 7 8 9 1 RP1 RESPACK-8 CS 1 CH0 2 CH1 3 GND 4 VCC8 CLK7 DI5 DO6 U1 ADC0832 +5V R4 510 1 2 3 654 8 9 = 7 ++CON 0 A B C D 1 2 43 RV1 1k +5V Volts +2.99 RV3 1k XTAL218 XTAL119 ALE30 EA31 PSEN29 RST9 P0.0/AD0 39 P0.1/AD1 38 P0.2/AD2 37 P0.3/AD3 36 P0.4/AD4 35 P0.5/AD5 34 P0.6/AD6 33 P0.7/AD7 32 P1.0/T21 P1.1/T2EX2 P1.23 P1.34 P1.45 P1.56 P1.67 P1.78 P3.0/RXD 10 P3.1/TXD 11 P3.2/INT0 12 P3.3/INT1 13 P3.4/T0 14 P3.7/RD 17 P3.6/WR 16 P3.5/T1 15 P2.7/A15 28 P2.0/A8 21 P2.1/A9 22 P2.2/A10 23 P2.3/A11 24 P2.4/A12 25 P2.5/A13 26 P2.6/A14 27 U5 AT89C51 U2 AND_4 LS1 SOUNDER