HD6475328-CP10 HITACHI [Hitachi Semiconductor], HD6475328-CP10 Datasheet - Page 126

• Manufacturer Part Number: HD6475328-CP10
• Description: original Hitachi CMOS microcomputer unit (MCU)
• Manufacturer: HITACHI [Hitachi Semiconductor]

5.4.2 Stack Status after Interrupt Handling Sequence
Figure 5-3 (a) and (b) show the stack before and after the interrupt exception-handling sequence.
Address
2m – 4
2m – 3
2m – 2
2m – 1
2m
Notes:
1. PC: The address of the next instruction to be executed is saved.
2. Register saving and restoring must start at an even address (e.g 2m).
Figure 5-3 (a) Stack before and after Interrupt Exception-Handling
Stack area
(Before)
(Minimum Mode)
SP
Save to stack
107
Address
2m – 4
2m – 3
2m – 2
2m – 1
2m
Upper 8 bits of SR
Lower 8 bits of SR
Upper 8 bits of PC
Lower 8 bits of PC
(After)
SP