GMS90C320

18

OCT. 2000 Ver 1.2

Interrupt System

The GMS90C320 provides 6 interrupt sources with two priority levels. Figure 3 gives a general overview of the interrupt

sources and illustrates the request and control flags.

Figure 3

Interrupt Request Sources

PT0

IP.1

High Priority

Low Priority

EA

IE.7

TF0

TCON.5

Timer 0 Overflow

TF1

TCON.7

IE0

TCON.1

IE1

TCON.3

TF2

T2CON.7

EXF2

T2CON.6

RI

SCON.0

TI

SCON.1

Timer 2 Overflow

Timer 1 Overflow

P3.2/

INT0

P3.3/

INT1

P1.1/

T2EX

USART

PT1

IP.3

PT2

IP.5

PS

IP.4

PX0

IP.0

PX1

IP.2

ET0

IE.1

ET1

IE.3

ET2

IE.5

ES

IE.4

EX0

IE.0

EX1

IE.2

IT0

TCON.0

IT1

TCON.2

EXEN2

T2CON.3