78M6612 Data Sheet
DS_6612_001
Special Function Registers for Interrupts
The following SFR registers control the interrupt functions:
• The interrupt enable Registers: IEN0, IEN1 and IEN2 (see Table 24, Table 25 and Table 26).
• The Timer/Counter control registers: The Timer/Counter control registers: TCON and T2CON (see
Table 27 and Table 28).
• The interrupt request register: IRCON (see Table 29).
• The interrupt priority registers: IP0 and IP1 (see Table 33 and Table 34).
Interrupt Enable 0 Register (IEN0)
Table 24: The IEN0 Register
MSB
EAL
LSB
EX0
WDT
–
ES0
ET1
EX1
ET0
Bit
Symbol Function
IEN0[7]
IEN0[6]
IEN0[5]
IEN0[4]
IEN0[3]
IEN0[2]
IEN0[1]
IEN0[0]
EAL
WDT
–
EAL=0 – disable all interrupts.
Not used for interrupt control.
ES0
ET1
EX1
ET0
EX0
ES0=0 – disable serial channel 0 interrupt.
ET1=0 – disable timer 1 overflow interrupt.
EX1=0 – disable external interrupt 1.
ET0=0 – disable timer 0 overflow interrupt.
EX0=0 – disable external interrupt 0.
Interrupt Enable 1 Register (IEN1)
Table 25: The IEN1 Register
MSB
LSB
–
–
SWDT
Bit
EX6
EX5
EX4
EX3
EX2
Symbol Function
IEN1[7]
IEN1[6]
IEN1[5]
IEN1[4]
IEN1[3]
IEN1[2]
IEN1[1]
IEN1[0]
–
SWDT
EX6
EX5
EX4
EX3
EX2
–
Not used for interrupt control.
EX6=0 – disable external interrupt 6.
EX5=0 – disable external interrupt 5.
EX4=0 – disable external interrupt 4.
EX3=0 – disable external interrupt 3.
EX2=0 – disable external interrupt 2.
32
Rev. 1.2
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
