HD6417021 Hitachi Semiconductor, HD6417021 Datasheet - Page 89

• Manufacturer Part Number: HD6417021
• Description: SuperH RISC engine
• Manufacturer: Hitachi Semiconductor

5.4.2
Figure 5.3 shows the stack after interrupt exception processing.
72 HITACHI
Notes: 1.
Stack after Interrupt Exception Processing
2.
3.
Bus width is 16 bits.
PC stores the top address of the next instruction (return instruction) after the
executed instruction.
The value of SP must always be a multiple of four.
Address
Figure 5.3 Stack after Interrupt Exception Processing
4n–8
4n–6
4n–4
4n–2
4n
PC*
SR
2
Upper 16 bits
Lower 16 bits
Upper 16 bits
Lower 16 bits
SP*
3