This document provides information about the microcontroller PIC16F84A, including: 1) It describes what a microcontroller is and introduces the PIC16F84A microcontroller. 2) It lists the ports and pins available on the PIC16F84A, including Port A and Port B pins for input/output. 3) It provides examples of using ports as inputs to read buttons or switches, and as outputs to control LEDs.

1. មហាវិទ្យាល័យ អគ្គិសនី
Microcontroller PIC16F84A
័
បង្រៀនងោយ ហួ ជាវនត
ឆ្ ាំ ២០១១- ២០១២
ន

2. etIGVICa Microcontroller ?
 Microcontroller KWCaRbB½næRtYtBinitümYy
manlkçNdUckMuBüÚT½rEdlfitenAkñúgsMbk Chip

3. rUbPaBbgðajEpñkxagkñúg Microcontroller

4. karBiBN’naBIeCIg PIC16F84A

5. karBiBN’naBIeCIg PIC16F84A
= RckcUl signal
= Rckecj signal
= RckcUlk¾)an
Rckecjk¾)an
EtvaGaRs½yelI
karsresr Code

6. karBiBN’naBIeCIg PIC16F84A
RA0, RA1, RA2, RA3, RA4 RtUv)anehAfa Port A
RB0, RB1, RB2, RB3, RB4, RB5, RB6, RB7 RtUv)anehAfa Port B
karehAfa Port A KWsMedAelIeCIgTaMgGs;rbs; Port A
karehAfa Port A Pin 0 KWsMedAelIeCIgrbs; Port A bit 0 ( eCIg RA0 )
karehAfa Port A nig Port B manlkçNdUcKña
Vdd RbPBviC¢man +5V nigVss RbPBGviC¢man 0V

7. etIGVICa Reset or Master clear (MCLR) ?
 Master clear KWCaeCIgmYysRmab;eFIVeGay
Microcontroller RtLb;eTAGas½ydæanedImKW 00h

8. kartP¢ab; Reset or Master clear

9. kartP¢ab;esoKVIlMeyaledayeRbIRKiHsþal;
esoKVIlMeyalCaEpñkmYysMxan;EdlmantYnaTIbegáIteGayman Square Signal

10. kareRbIR)as; PORT CaRckecj( Output )
 ral;eCIgnimYy²rbs; PORT A, PORT B
mantémøcrnþGtibrma 25 mA TaMgcrnþviC¢man
nigcrnþGviC¢man ( Source Current and Sink Current)

11. kartP¢ab;GMBUl LED eTAkan; PORT
CaFmµtaGMBUl LED
sIucrnþRbEhlBI 8mA eTA
16 mA nigtg;süúgRbEhl
BI 1.6V eTA 2.4V .
ebIGMBUlLEDsIucrnþ
10mA nigtg;süúg 2V

12. kareRbIR)as; PORT CaRckcUl( Input )
 témøtg;süúgEdlcUleTAkan;eCIg PORT
ebItg;süúgcUlmantémøBI
2V~5V tMNageGayHigh
ebItg;süúgcUlmantémøBI
0V~0.8V tMNageGayLow

13. kartP¢ab; Button eTARckcUl( Input )
Active High PORT
+5V +5V
Low
Gt;cuc
High
cuc
Active Low PORT
High
Gt;cuc
Low
cuc

14. rebobkMnt; PORT Ca Input or Output
TRISx KWCa Register
mYysRmab;kMnt;muxgar
rbs; PORTx
TRISx = 1
PORTx as Input.
TRISx = 0
PORTx as Output.

15. karsresrkmµviFIsRmab; PIC16F84A
 TMrg;TUeTArbs;Pasa C sRmab; Microcontroller
void main()
{
while(1)
{
program body;
}
}

16. karsresrkmµviFIsRmab; PIC16F84A
void main() CatMbn;sRmab;RbkasGefr
{
rWkarkMnt;nUvmuxgarmYycMnYn
while(1)
{
rbs; Microcontroller
program body;
} dUcCa Trisb = 0; or
}
Portb = 0; CaedIm .

17. karsresrkmµviFIsRmab; PIC16F84A
void main()
{
CatMbn;EdlmandMeNIrkarrhUt
while(1)
{ Example: GMBUlmYyebIk
program body;
}
} ehIybiT²CaerogrhUt.
eyIgRtUvsresr Code enA
kñgtMbn;enH(program body)
ú

18. sresrkmµviFIeGayGMBUlmYyebIkehIybiT²CaerogrhUt
void main()
{
Trisb = 0b00000000; // Config PortB all pin as output
Portb = 0b00000000; // Send data low to all pin of PortB
while(1)
{
Portb = 0b00000001; // Send data High to bit 0 of PortB
delay_ms(1000); // Wait 1 second
Portb =0b00000000; // Send data low to all pin of PortB
delay_ms(1000); // Wait 1 second
}
}

19. karKUsesoKVI PIC16F84A

20. GrKuN