ВУЗ: Не указан
Категория: Не указан
Дисциплина: Не указана
Добавлен: 23.07.2024
Просмотров: 30
Скачиваний: 0
m i k r o E l e k t r o n i k a d e v e l o p m e n t s y s t e m s |
|
8051easy |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
development system |
|
|
The mark above every button represents the name of the pin which the button is connected to. In order to use a button, appropriate pin of ports 0, 1 i 3 must be designated the input one. Jumper in the lower left corner of the development system is used to define if the active value of a pin is 0 or 5 V. If the jumper is set to “up”, then activating a certain button will bring logical one to the pin, while “down” position will bring logical zero.
ButtonsTasteri canmogube biti connectedpovezani tona::
5V 0V
Picture 16.
LCD DISPLAY
Standard LCD display (2x16 characters) is supplied. However, it is not a limitation, because any display having the same type of communication with the microcontroller can be used. Display contrast can be adjusted using the potentiometer in the lower left corner of the development system. LCD display can be connected to the port 1 or the port 2. Following picture shows how to connect the LCD to port 1 and the picture 18. how to connect LCD to port 2 of the ATS908515 microcontroller.
|
|
|
|
+5V |
|
|
|
|
|
|
|
RS |
P1.0 |
|
VCC |
|
|
|
|
Picture 17. |
|
|
P1.1 |
|
P0.0 |
|
|
|
|
|||
|
|
|
|
|
|
|
||||
|
E |
P1.2 |
|
P0.1 |
|
|
|
|
|
|
|
P1.3 |
|
P0.2 |
|
|
|
|
|
|
|
|
D4 |
|
|
|
|
|
|
|
||
|
P1.4 |
|
P0.3 |
|
|
|
|
|
|
|
|
D5 |
|
|
|
|
|
|
|
||
|
P1.5 |
|
P0.4 |
|
|
|
|
|
|
|
|
D6 |
|
|
|
|
|
|
|
||
|
P1.6 |
|
P0.5 |
|
|
|
|
|
|
|
|
D7 |
|
|
|
|
|
|
|
||
|
P1.7 |
|
P0.6 |
|
|
|
|
|
|
|
+5V |
|
AT89S8252 |
|
|
|
|
|
|
||
|
RESET |
P0.7 |
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|||
10K |
|
P3.0 |
ICP |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
P3.1 |
ALE |
|
|
|
|
|
|
|
|
|
P3.2 |
PSEN |
|
|
|
|
|
|
|
|
Reset |
|
P3.3 |
P2.7 |
|
|
|
|
|
|
|
|
P3.4 |
P2.6 |
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
||
|
|
P3.5 |
|
P2.5 |
|
|
|
|
|
|
|
|
P3.6 |
|
P2.4 |
|
|
|
|
|
|
4MHz |
|
P3.7 |
|
P2.3 |
|
|
m i K r o e l e k t r o n i |
k a |
+ |
|
|
|
OSC2/CLKIN |
|
P2.2 |
|
|
|
|
|
|
|
|
OSC1/CLKIN |
|
P2.1 |
|
|
|
|
|
|
|
|
GND |
|
P2.0 |
|
|
|
|
|
|
|
|
|
|
D7 |
D6 |
D5 |
D4 D3 D2 D1 D0 |
E R/W RS Vee Vdd Vss |
|
|
|
|
|
|
|
|
|
|
1 |
|
|
|
|
|
|
|
|
|
|
+5V |
|
|
|
|
|
|
|
|
|
|
KontrastLCD contrastLCD-a |
|
|
PIC, AVR, MC68HC11, i8051, PSoC development systems www.mikroelektronika.co.yu |
9 |
m i k r o E l e k t r o n i k a d e v e l o p m e n t s y s t e m s |
|
8051easy |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
development system |
|
|
|
|
|
|
+5V |
|
|
|
|
|
|
|
|
Picture 18. |
|
|
P1.0 |
|
VCC |
|
|
|
|
|
|
|
|
|
||
|
P1.1 |
|
P0.0 |
|
|
|
|
|
|
|
|
|
|
|
|
P1.2 |
|
P0.1 |
|
|
|
|
|
|
|
|
|
|
|
+5V |
P1.3 |
|
P0.2 |
|
|
|
|
|
|
|
|
|
|
|
P1.4 |
|
P0.3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
P1.5 |
|
P0.4 |
|
|
|
|
|
|
|
|
|
|
|
10K |
P1.6 |
|
P0.5 |
|
|
|
|
|
|
|
|
|
|
|
|
P1.7 |
AT89S8252 |
P0.6 |
|
|
|
|
|
|
|
|
|
|
|
|
RESET |
P0.7 |
|
|
|
|
|
|
|
|
|
|
|
|
|
P3.0 |
ICP |
|
|
|
|
|
|
|
|
|
|
|
|
|
Reset |
P3.1 |
ALE |
|
|
|
|
|
|
|
|
|
|
|
|
P3.2 |
PSEN |
D7 |
|
|
|
m i K r o e l e k t r o n i k a |
+ |
|||||||
|
P3.3 |
|
P2.7 |
|
|
|
||||||||
|
|
D6 |
|
|
|
|
|
|
|
|
|
|
||
|
P3.4 |
|
P2.6 |
|
|
|
|
|
|
|
|
|
|
|
|
|
D5 |
|
|
|
|
|
|
|
|
|
|
||
|
P3.5 |
|
P2.5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
D4 |
|
|
|
|
|
|
|
|
|
|
||
|
P3.6 |
|
P2.4 |
|
|
|
|
|
|
|
|
|
|
|
|
|
E |
|
|
|
|
|
|
|
|
|
|
||
4MHz |
P3.7 |
|
P2.3 |
|
|
|
|
|
|
|
|
|
|
|
|
RS |
|
|
|
|
|
|
|
|
|
|
|||
|
OSC2/CLKIN |
|
P2.2 |
D7 |
D6 |
D5 |
D4 |
D3 |
D2 |
D1 |
D0 |
E R/W RS Vee Vdd Vss |
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
OSC1/CLKIN |
|
P2.1 |
|
|
|
|
|
|
|
|
|
+5V |
|
|
GND |
|
P2.0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
KontrastLCD contrastLCD-a |
|
|
1 |
|
|
|
|
|
|
|
|
1 |
|
|
|
|
|
|
|
|
8051 |
|
|
|
|
|
|
|
|
8051 |
|
|
|
|
|
Picture 19. |
|
|
|
|
|
|
|
|
|
Picture 20. |
LCD display connected to port 1. |
LCD display connected to port 2. |
PIC, AVR, MC68HC11, i8051, PSoC development systems www.mikroelektronika.co.yu |
10 |
m i k r o E l e k t r o n i k a d e v e l o p m e n t s y s t e m s |
|
8051easy |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
development system |
|
|
SEVEN-SEGMENT DISPLAYS
Seven-segment display consists of four digits which are refreshed and displayed using port 1 in combination with port 3. Using the DIP switch SW2, you can include or exclude the digits in use. For example, let’s say that we need to enable display of the first digit on the left. By turning the fourth switch (SW2) to (ON), digit of the seven-segment display (DIS1, leftmost digit) will be showing value defined by values of port 1 pins (picture 21.). Procedure is similar with digits DIS2, DIS3 and DIS4. The following picture shows how to connect the seven-segment display to the microcontroller.
Turn on switch Sw2 if you want to use displays
Picture 21.
P3.2
P3.3
P3.4
P3.5
SW2
|
|
|
10ΚΩ |
|
TR4 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10ΚΩ |
TR3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10ΚΩ |
|
|
|
|
|
|
|
|
|
|
|
TR2 |
|
|
|
|
|
|
ON |
|
|
|
|
10ΚΩ |
|
|
|
|
|
|
SW2 |
|
|
|
|
TR1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
1 |
2 |
3 |
|
4 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
g f K a b |
g f K a b |
g f K a b |
g f K a b |
|
|
|
|
|
|
|
|
8 8 8 8 |
|||
|
|
|
|
|
|
|
|
e d K c dp |
e d K c dp |
e d K c dp |
e d K c dp |
|
|
|
|
|
330Ω |
h |
|
|
|
|
|
|
|
|
|
|
330Ω |
g |
|
|
|
|
|
|
|
|
|
|
330Ω |
f |
|
|
|
|
|
|
|
|
|
|
330Ω |
e |
|
|
|
|
|
|
|
|
|
|
330Ω |
d |
|
|
|
|
|
|
|
|
|
|
330Ω |
c |
|
|
|
|
|
|
|
|
|
|
330Ω |
b |
|
|
|
|
|
|
|
|
|
|
330Ω |
a |
|
|
|
|
|
|
|
|
|
|
|
|
|
+5V |
|
|
|
|
|
|
|
|
|
P1.0 |
|
VCC |
|
|
|
|
|
|
|
|
|
P1.1 |
|
P0.0 |
|
|
|
|
|
|
|
|
|
P1.2 |
|
P0.1 |
|
|
|
+5V |
|
|
|
|
|
P1.3 |
|
P0.2 |
|
|
|
|
|
|
|
|
P1.4 |
|
P0.3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
P1.5 |
|
P0.4 |
|
|
|
10K |
|
|
|
|
|
P1.6 |
|
P0.5 |
|
|
|
|
|
|
|
|
|
P1.7 |
AT89S8252 |
P0.6 |
|
|
|
|
|
|
|
|
|
RESET |
P0.7 |
|
|
|
|
|
|
|
|
|
|
P3.0 |
ICP |
|
|
|
|
|
Reset |
|
|
|
|
|
P3.1 |
ALE |
|
|
|
|
|
|
|
|
|
P3.2 |
PSEN |
|
|
|
||
|
|
|
|
|
|
P3.3 |
|
P2.7 |
|
|
|
|
|
|
|
|
|
P3.4 |
|
P2.6 |
|
|
|
|
|
|
|
|
|
P3.5 |
|
P2.5 |
|
|
|
|
|
|
|
|
|
P3.6 |
|
P2.4 |
|
|
|
|
|
|
|
|
4MHz |
P3.7 |
|
P2.3 |
|
|
|
|
|
|
|
|
|
OSC2/CLKIN |
|
P2.2 |
|
|
|
|
|
|
|
|
|
OSC1/CLKIN |
|
P2.1 |
|
|
|
|
|
|
|
|
|
GND |
|
P2.0 |
|
|
Picture 22. |
|
|
|
|
|
|
|
|
|
|
|
|
PIC, AVR, MC68HC11, i8051, PSoC development systems www.mikroelektronika.co.yu |
11 |
m i k r o E l e k t r o n i k a d e v e l o p m e n t s y s t e m s |
8051easy |
|
ANALOG-DIGITAL CONVERTER
Microcontroller AT89C8252, that can be used in the development system, doesn’t have implemented 10bit A/D coverter. That is why a 12-bit A/D converter LTC1290 is added to the system.
development system
It is possible to read values of
Moguæe je oèitavati
Picture 23. 8 analog inputs vrednosti 8 analognih ulaza
+
+
P1.4
P1.5
P1.6
If you want to read values of AD0, ..., AD7 inputs, it is neccessary to set the DIP switch SW4 in the position shown on the picture 23. Picture 24. shows how to connect A/D converter and the microcontroller.
|
|
|
|
+5V |
|
|
|
|
|
OE |
Vdd |
|
|
|
|
|
22μF |
+ |
NC |
NC |
10ΚΩ |
10ΚΩ |
10ΚΩ |
10ΚΩ |
|
NC |
NC |
|||||
|
|
GND |
OUT |
|
|
|
|
|
4 MHZ |
|
|
|
|
1ΚΩ |
CH0 |
Vcc |
|
|
|
|
|
|
|
||
|
CH1 |
ACLK |
|
|
|
+5V |
CH2 |
SCLK |
|
|
|
CH3 |
Din |
|
|
|
|
|
|
|
|
||
|
CH4 |
Dout |
|
|
|
|
CH5 |
CS |
|
|
|
|
CH6 |
REF+ |
|
|
|
|
CH7 |
REF- |
|
|
|
|
COM |
V- |
|
|
|
A/DUlaziconverterA/D |
DGND |
AGND |
|
|
|
|
|
|
|
|
|
konvertorainputs |
LTC1290 |
|
|
|
|
+12V |
NC |
NC |
|
|
|
|
|
|
|
||
|
Vin |
NC |
|
|
|
|
NC |
Vref |
|
|
|
|
GND |
NC |
4.7μF |
+ |
+5V |
|
|
|
|||
|
REF02 |
|
|
||
|
|
|
|
||
|
|
|
|
|
10K |
Reset
4MHz
|
|
|
|
|
|
|
|
Picture 24. |
|
These switches have to be set to |
|
||||||
|
Ovi prekidaèi moraju biti u položaju |
|
||||||
|
|
in order to communicate with |
|
|
||||
|
|
|
||||||
|
ON kako bi se moglo komunicirati sa |
|
|
|||||
|
A/D converter |
|
|
|
|
|||
|
AD konvertorom |
|
|
|||||
|
|
|
|
|
|
|
|
|
CS_AD 4 |
|
|
ON |
|
||||
MOSI |
3 |
|
|
|
|
|
|
|
|
|
|
MISO |
2 |
|
|
|
|
|
|
|
|
|
|
SCK |
1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
+5V |
|
|
|
|
|
|
|
P1.0 |
|
|
VCC |
|
|
|
|
|
|
|
|
P1.1 |
|
|
P0.0 |
|
|
|
|
|
|
|
|
P1.2 |
|
|
P0.1 |
|
|
|
|
|
|
|
|
P1.3 |
|
|
P0.2 |
|
|
|
K A n a l : |
5 |
+ |
||
P1.4 |
|
|
P0.3 |
|
|
|
|||||
|
|
|
|
|
|
|
c o n V : |
|
|||
P1.5 |
|
|
P0.4 |
|
|
|
A / d |
|
4 0 9 5 |
||
P1.6 |
|
|
P0.5 |
|
|
|
|
|
|
|
|
P1.7 |
|
AT89S8252 |
P0.6 |
|
|
|
|
|
|
|
|
RESET |
P0.7 |
D7 |
D6 |
D5 |
D4 D3 D2 D1 |
D0 |
E R/W RS Vee Vdd Vss |
|
|||
P3.0 |
|
ICP |
|
|
|
|
|
|
1 |
|
|
P3.1 |
|
ALE |
|
|
|
|
|
|
+5V |
|
|
P3.2 |
|
PSEN |
D7 |
|
|
|
|
|
|
|
|
P3.3 |
|
P2.7 |
|
|
|
|
|
|
KontrastLCD contrastLCD-a |
||
|
|
|
|
|
|
|
|
||||
|
|
D6 |
|
|
|
|
|
|
|||
P3.4 |
|
|
P2.6 |
|
|
|
|
|
|
|
|
|
|
D5 |
|
|
|
|
|
|
|
||
P3.5 |
|
|
P2.5 |
|
|
|
|
|
|
|
|
|
|
D4 |
|
|
|
|
|
|
|
||
P3.6 |
|
|
P2.4 |
|
|
|
|
|
|
|
|
|
|
E |
|
|
|
|
|
|
|
||
P3.7 |
|
|
P2.3 |
|
|
|
|
|
|
|
|
|
|
RS |
|
|
|
|
|
|
|
||
OSC2/CLKIN |
|
P2.2 |
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|||
OSC1/CLKIN |
|
P2.1 |
|
|
|
|
|
|
|
|
|
GND |
|
|
P2.0 |
|
|
|
|
|
|
|
|
PIC, AVR, MC68HC11, i8051, PSoC development systems www.mikroelektronika.co.yu |
12 |