Datasheet
DS_1215F_003  73S1215F Data Sheet 
Rev. 1.4    35 
Interrupt Enable 1 Register (IEN1): 0xB8 Å 0x00 
Table 21: The IEN1 Register 
MSB LSB 
–  SWDT EX6 EX5 EX4 EX3 EX2  – 
Bit Symbol  Function 
IEN1.7 –  
IEN1.6  SWDT  Not used for interrupt control. 
IEN1.5  EX6  EX6 = 0 – disable external interrupt 6. 
IEN1.4  EX5  EX5 = 0 – disable external interrupt 5. 
IEN1.3  EX4  EX4 = 0 – disable external interrupt 4. 
IEN1.2  EX3  EX3 = 0 – disable external interrupt 3. 
IEN1.1  EX2  EX2 = 0 – disable external interrupt 2. 
IEN1.0 –  
Interrupt Enable 2 Register (IEN2): 0x9A Å 0x00 
Table 22: The IEN2 Register 
MSB LSB 
– – – – – – – ES1 
Bit Symbol  Function 
IEN2.0  ES1  ES1 = 0 – disable serial channel interrupt. 










