Renesas R8C/Tiny Series Software Manual page 7

5.2 Interrupt Control ...................................................................................................................... 249
5.2.1 I Flag ............................................................................................................................... 249
5.2.2 IR Bit ............................................................................................................................... 249
5.2.3 ILVL2 to ILVL0 bis, IPL ................................................................................................... 250
5.2.4 Rewrite the interrupt control register ............................................................................... 251
5.3 Interrupt Sequence ................................................................................................................. 252
5.3.1 Interrupt Response Time ................................................................................................ 253
5.3.2 Changes of IPL When Interrupt Request Acknowledged ............................................... 253
5.3.3 Saving Registers ............................................................................................................. 254
5.4 Return from Interrupt Routine ................................................................................................. 255
5.5 Interrupt Priority ...................................................................................................................... 256
5.6 Multiple Interrupts ................................................................................................................... 257
5.7 Precautions for Interrupts ....................................................................................................... 259
5.7.1 Reading address 0000016 .............................................................................................. 259
5.7.2 Setting the stack pointer ................................................................................................. 259
5.7.3 Rewrite the interrupt control register ............................................................................... 259
Chapter 6 Calculation Number of Cycles ___________________________________
6.1 Instruction queue buffer .......................................................................................................... 262
A-3