INTERRUPT STRUCTURE

S3C84E5/C84E9/P84E9

 

 

Table 5-1. Interrupt Vectors

Vector Address

Interrupt Source

Request

Reset/Clear

 

 

 

 

 

 

 

Decimal

Hex

 

Interrupt

Priority in

H/W

S/W

Value

Value

 

Level

Level

 

 

 

 

 

 

 

 

 

256

100H

Basic timer (WDT) overflow

nRESET

Ö

 

 

 

 

 

 

 

 

230

E6H

UART transmit

IRQ7

1

 

Ö

 

 

 

 

 

 

 

228

E4H

UART receive

 

0

 

Ö

 

 

 

 

 

 

 

226

E2H

P4.2 external interrupt

IRQ6

2

 

Ö

 

 

 

 

 

 

 

224

E0H

P4.1 external interrupt

 

1

 

Ö

 

 

 

 

 

 

 

222

DEH

P4.0 external interrupt

 

0

 

Ö

 

 

 

 

 

 

 

220

DCH

P2.7 external interrupt

IRQ5

3

 

Ö

 

 

 

 

 

 

 

218

DAH

P2.6external interrupt

 

2

 

Ö

 

 

 

 

 

 

 

216

D8H

P2.5 external interrupt

 

1

 

Ö

 

 

 

 

 

 

 

214

D6H

P2.4 external interrupt

 

0

 

Ö

 

 

 

 

 

 

 

212

D4H

P2.3 external interrupt

IRQ4

3

 

Ö

 

 

 

 

 

 

 

210

D2H

P2.2 external interrupt

 

2

 

Ö

 

 

 

 

 

 

 

208

D0H

P2.1external interrupt

 

1

 

Ö

 

 

 

 

 

 

 

206

CEH

P2.0 external interrupt

 

0

 

Ö

 

 

 

 

 

 

 

204

CCH

Watch timer

IRQ3

 

Ö

 

 

 

 

 

 

 

202

CAH

Timer 1(1) overflow

IRQ2

3

Ö

Ö

 

 

 

 

 

 

 

200

C8H

Timer 1(1) match/capture

 

2

Ö

Ö

 

 

 

 

 

 

 

198

C6H

Timer 1(0) overflow

 

1

Ö

Ö

 

 

 

 

 

 

 

196

C4H

Timer 1(0) match/capture

 

0

Ö

Ö

 

 

 

 

 

 

 

194

C2H

Timer A overflow

IRQ1

1

Ö

Ö

 

 

 

 

 

 

 

192

C0H

Timer A match/capture

 

0

Ö

Ö

 

 

 

 

 

 

 

190

BEH

Timer B underflow

IRQ0

Ö

 

 

 

 

 

 

 

 

NOTES:

1.Interrupt priorities are identified in inverse order: "0" is the highest priority, "1" is the next highest, and so on.

2.If two or more interrupts within the same level contend, the interrupt with the lowest vector address usually has priority over one with a higher vector address. The priorities within a given level are fixed in hardware.

5-6

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