GMS90X5XC Series HYUNDAI MicroElectronics

Jan. 2001 Ver 1.0 21

INTERRUPT SYSTEM

The GMS90X5XC series provides 5 (4K bytes ROM version) or 6 (above 8K bytes ROM version) interrupt

sources with two priority levels. Figure 5 gives a general overview of the interrupt sources and illustrates the

request and control flags.

Figure 5. Interrupt Request Sources
PT0
IP.1
PT1
IP.3
PT2
IP.5
PS
IP.4
PX0
IP.0
PX1
IP.2
EA
IE.7
ET0
IE.1
ET1
IE.3
ET2
IE.5
ES
IE.4
EX0
IE.0
EX1
IE.2
TF0
TCON.5
TF1
TCON.7
≥1
TF2
T2CON.7
EXF2
T2CON.6
≥1
RI
SCON.0
TI
SCON.1
IE0
TCON.1
IE1
TCON.3
IT0
TCON.0
IT1
TCON.2
P3.2/
INT0
P3.3/
INT1
EXEN2
T2CON.3
P1.1/
T2EX
Timer 2 Overflow
Timer 0 Overflow
Timer 1 Overflow
: Low level triggered
: Falling edge triggered
Low
Priority
High
Priority
UART