返回主页 单片机教程XL2000开发板 单片机学习 自制编程器 单片机资料 软件下载 电子技术产品介绍如何购买 进入论坛

Flash MC Experimenting Board II

The Flash MC Experimenting Board II is an ideal platform for all developments in conjunction with the 'big' Atmel Flash microcontrollers (AT89C51/AT89C52/AT89C55/AT89S8252). It is not only recommendable for starters but also very much recommendable for the advanced developer due to the fact that it offers an universal and standardized platform which enables to bring almost anything thinkable into reality.

All basic parts of a Flash microcontroller applikation are located directly on the Flash MC Experimenting Board II. To these belong the voltage regulation and stabilisation, the oscillator, the POR-wiring (Power On -> Reset), a reset switch, a 8x DIP switch for all kinds of configuration issues, pin rows for solder connections and lots more.



The extension possibilities of the Flash MC Experimenting Boards II:

Through four so-called extension ports you can attach all kinds of extension modules. All four extension ports offer in addition to the I/O lines of the port, power supply, the serial interface as well as other lines.

These extension modules including microcontroller example programs will be published for your convenience little by little here at Batronix.com. In most cases a simple hole grid erection will be sufficient, so expansions can be easily developed on one's own.

Here are only some examples of possible expansion modules:

Input area:
- Keys Board
- Keyboard block
- PC-Keyboard connection

Indication area:
- LC-display
- LED display modules
- 7 segment fields

Output area:
- Relay board
- Stepper motor control
- PC-Printer control

Sensor technology area:
- Temperature sensors
- Infrared sensors
- AD converter

Other areas:
- RAM expansion
- DA converter
- PC connection serial and parallel

Schematic in GIF format:

On the first view the plan might apear a little complicated,but it really isn't. The upper left part represents the voltage regulation and stabilisation. The switches S1-1 to S1-8 are implanted with a simple 8x DIP switch. On the upper right you can see the pins rows that are located left and right of the MC and which simply offer his pins 1:1 for a solder connection. The drawn joints EP 0-0 to EP 3-15 are the extension ports. I recommend to take a close look at the circuit layers, then everything should be easily understandable.


Since the 40 pole IC socket will be strained by inserting and removing the Flash microcontroller often, it would be better to use a lever socket (i.e. Textoolsocket from 3M).

Amount
Description
Value
IC pitch (mm)
Name
1
Circuit board
 
  
1
Solder- & screwable Supply terminal
3-pole
5
-
2
Pin row
21-pins
2.5
SA, SB
1
DIP-switch
8-fach
 
S1
1
Voltage regulator
5 Volt, 1 Ampere
 
VREG
1
Cooler for voltage regulator
z.B. V4330 N
  
1
Screw*
M3*8
 
1
Nut*
M3
  
  
1
LED
low current, green
2,5
D1
1
IC socket
40-pole
  
  
1
Quarz
0 - 24 MHz
5
Q1
1
Resistor
1,5 kOhm
7,5
R1
2
Resistor
6,8 kOhm
7,5
R2, R3
2
Capacitor
33 pF
2,5
C5, C6
1
Resistor
100 nF
2,5
C2
1
Resistor
10 uF/min. 5V
2,5
C4
1
Resistor
22 uF/min. 5V
2,5
C3
1
Resistor
220 uF/min. 24V
2,5
C1
1
Reset button
z.B. DT6
 
RT
4
Connector
16 pole
 
EP0 - EP3
25
Parts, total
  
  
  
* The screw and the nut are used to attach the cooler to the voltage regulator.
The values relate with the V4330 N cooler.