VCC
U6: 7408 features an "And" gate.
U6 P1.0 P1.1 1 2 3 4 5 6 7 1A 1B 1Y 2A 2B 2Y GND VCC 4B 4A 4Y 3B 3A 3Y 7408 14 13 12 11 10 9 8 VCC
JP3: 此40脚的连接座与对应40脚的单片机, 可以测量单片机每个脚的电压等信息。
P0.[0..7]
R11,R12: the pack resistors improve the driving ability
R11 8 7 6 5 4 3 2 1 vcc R12 vcc 1 2 3 4 5 6 7 8
B
MAX232: TTL电平转换为RS232电平
MAX232: used to convert the T to the RS232 co TL mpatible
DS1 DS2 DS3 JP12 RESET P1.5 P1.6 P1.7 DS4 DS5 DS6 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 R1 R2 R3 R4 R5 R8 R14 R15 P1.0 P1.1
INT0
P1.2 P1.3
VCC
R1 1,R 12 : 上 拉 电阻 增 强 高 电 平驱 动 力 。
JP3:Be a mirror of the MC this 40-pin port U, co nnected to the 40 pins of the MCU, which used to read the voltage of each pin and m ake other measurements.
XTA L 32.76 8KHZ C12 6pF
CLK2
VCC
串口:用于STC芯片的 下载和SST的仿真
Serial Port: used for Downloading to SST and Simu lation for STC
U2 U3:3态8口D触发器由时钟控制输出高低电平。
U2 U3 74ls373:The 3-state 8 D-type flip-flops outputs accordings to the clock wire(CLK2).
C5
8 9 10 11 12 13 14 52ISP
RESET P1.5 P1.6 P1.7 R2IN1 RXD 232 TXD 232
DS7 DS8
TXDONE 11 10 RXDONE 12 9 R2OUT 15
VCC 40 39 38 37 36 35 34 33 32 31 EA 30 ALE 29 PSEN 28 RS 27 26 P24 25 24 23 22 21 beep er
Y 2: 12 M晶 振 ,控 制 单片 机 运 行 的 速度 。
Y2: a12MHz cycstal oscillator needed to tell the m how fast cu it works.
JP4 VCC 2 1 SW DIP-2 3 4 beep ervcc LED
U7:串行EEPROM(电可擦除可编程ROM) 使用I2C总线存储数据。
U4 U5:由达林顿管驱动感性负载。
U4 U U 2803; 8 npn darlington 5 LN pairs built in, this device features high-voltage outputs for switching inductive loads.
P1.1 S12 S11 S10 S9 P1.2 S16 S15 S14 S13 P1.3
Lamp
R6 220
JP3 4 3 2 1 USB Female
C1 0.1uF
C8 100uF
!!POWER SUPPLY!!: You may use the source of your USB, and a DC adpater of 12V provides the VCC LCD(YM12864 some types 5V ou tput needed extra power) with the power supply.
U1 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 RST RXD TXD /INT0 /INT1 T0 T1 /WR /RD X1 X2 GND VCC P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 /EA ALE /PSEN P2.7 P2.6 P2.5 P2.4 P2.3 P2.2 P2.1 P2.0 AT8 9S52
A
3
JP8 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 RESET RXD TXD INT0 RW T0 E WR RD X1 X2 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
VCC
a b C d ee f g h
1 2 3 4 5 6 7 8 9
d1 d2 d3 d4
R7 P26 P25 RST SDA SCL
74LS02
U3 P0.0 P0.1 P0.2 P0.3 3 4 7 8 13 14 17 18 1 10 1D 2D 3D 4D 5D 6D 7D 8D /OE GND VCC 1Q 2Q 3Q 4Q 5Q 6Q 7Q 8Q CLK 74LS373 20 2 5 6 9 12 15 16 19 11
VCC U5 1O 2O 3O 4O 1O 2O 3O 4O 1 2 3 4 5 6 7 8 9 1D 2D 3D 4D 5D 6D 7D 8D GND ULN2803 1Q 2Q 3Q 4Q 5Q 6Q 7Q 8Q COM 18 17 16 15 14 13 12 11 10 d1 d2 d3 d4
P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 RESET LED RXD232 TXD232 JP6 X1 2 4 6 8 10 RESET RXD TXD TXD 232 RXD 232 P1.7 P1.6 P1.5 P1.4 S4 S3 S2 S1 2 S8 S7 S6 S5 P1.0 C6 Y2 1 XTAL C7 22p F 22p F + B1 2 1 beep er beep ervcc X2 1 2 3 4 5 6 7 8 9 RXD 10 TXD 11 INT0 12 RW 13 T0 14 15 E WR 16 17 RD 18 19 20
LED1: 4位7段数字显示管
LED1 : a 4-Digit display
LED1 a b C d ee f g h 11 7 4 2 1 10 5 3 a b c d e f g dp 12 9 8 6 d1 d2 d3 d4
a f e d g b c dp
U2 P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 3 4 7 8 13 14 17 18 1 10 1D 2D 3D 4D 5D 6D 7D 8D /OE GND VCC 1Q 2Q 3Q 4Q 5Q 6Q 7Q 8Q CLK 74LS373 20 2 5 6 9 12 15 16 19 11
1 2
J1
Y1
R1IN TIOUT TXD 232ONE R2IN RXD 232ONE
U9: 通过I2C总线通信的时间芯片 可以高精度大范围的统计时间。
U I2C compatible Timekeeper 9: DS130 counts from seconds to 2 years.
24LC02 8 7 6 5 VCC WP SCL SDA U7 A0 A1 A2 VSS 1 2 3 4 SCL SDA
U Serial EEPR uses a I2C bus to 7: OM store datas up to 1kbytes to extend the capacity of the mcu.
C
JP5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 YM 12864 VCC RS RW E P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 JP7 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 1602 R10 P0.7 P0.6 P0.5 P0.4 P0.3 P0.2 P0.1 P0.0 E RW RS VCC VCC
1
2
3
4
5
6
7
8
1 2 3 D1 +12V 2 1 Vout- V~inVout+ V~in+ DB101 U11 Regulator A 1 1 3 2 7805 2 3 2 1 JP2 4 3
JP1 A B C DC Port
DS9
电源：电源取自USB+5V和GND的回路。12V的 电源适配器用于提供液晶显示屏YM12864的 背光电源。
vcc 1 2 3 4 5 6 7 8
1 2 3 4
U8: U8是"或非"门
9 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9
B CLK1 CLK2 VCC U4 1Q 2Q 3Q 47Q 8Q 1 2 3 4 5 6 7 8 9 1D 2D 3D 4D 5D 6D 7D 8D GND 1Q 2Q 3Q 4Q 5Q 6Q 7Q 8Q COM ULN2803 18 17 16 15 14 13 12 11 10 a b C d ee f g h R13