ATTyny 2313 RS232 Board

ATTiny2313 Board RS232

Description

This board is a small controller board on which you can build your projects. It is suited for educational use, experiments or prototyping. The board uses the AT2313 microcontroller with a 10Mhz crystal. The board contains the ISP 10-pin connector for in circuit serial programming. It has also a push button reset switch for resetting the microcontroller. The I/O pins of the microcontroller are also available on two ML10 connectors for connecting for example the LCD-Interface board. The power can be connected via the DC connector which has a pin of 1.1mm. The power regulator supplies the microcontroller with the 5V DC power it needs. The DB9 bus connector can be hooked to the serial port of your PC for communication between the microcontroller and the PC. The MAX232 IC takes care of the voltage conversion of the RS232 voltage levels and the micrcontroller voltage levels.

schematic

Layout

Programming

The microcontroller on the board can be programmed via the 10-pin ISP connector. The following AT microcontrollers can be programmed with this board:

• ATTiny2313
• AT90S2313 (obsolete)
• AT90S1200 (obsolete)
•  

Connector pinout

In the table below you see the pins of the connectors.

PORTB pin AT2313 pin 1 PB0 2 PB1 3 PB2 4 PB3 5 PB4 6 PB5 7 PB6 8 PB7 9 GND 10 VCC

PORTD pin AT2313 pin 1 PD0 2 PD1 3 PD2 4 PD3 5 PD4 6 PD5 7 PD6 8 NC 9 GND 10 VCC

ISP pin AT2313 pin 1 PB5 2 NC 3 NC 4 GND 5 RESET 6 GND 7 PB7 8 GND 9 PB6 10 GND

Software

There are several projects on this site that you can try and use with the ISP-board:

• Blink a LED
• LCD@AVR
• LCD Thermometer DS1621
• LCD Themometer LM35
• Real Time Clock

Partlist

1	Bu1	DC Conn 1,1mm pin
2	C1	47µF 16V
3	C2	100nF
4	C3	100nF
5	C4	100nF
6	C5	1µF 63V
7	C6	1µF 63V
8	C7	1µF 63V
9	C8	1µF 63V
10	C9	100nF
11	C10	100nF
12	C11	100nF
13	IC1	7805
14	IC2	AT90S2313
15	IC3	MAX232
16	K1	ML10
17	K2	ML10
18	K3	ML10
19	K4	DB9 female
20	Q1	10MHz
21	R1	10k
22	S1	Switch
23		PCB