HD6417021 Hitachi Semiconductor, HD6417021 Datasheet - Page 66

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

48 HITACHI
Notes: 1.
Exception
source
2.
The instructions that rewrite the PC are JMP, JSR, BRA, BSR, RTS, RTE, BT, BF,
and TRAPA.
The delayed branch instructions are JMP, JSR. BRA. BSR, RTS, and RTE.
Reset
Address
error
Interrupt
Instruction
Figure 4.1 Exception Source Types and Priority
• Power-on reset
• Manual reset
• CPU address error
• DMA address error
• NMI
• User break
• IRQ
• On-chip module
• Trap instruction
• General illegal
• Illegal slot
instruction
instruction
• IRQ0–IRQ7
• Direct memory access
• 16-bit integrated-timer
• Serial communications
• Parity control unit
• Watchdog timer
• DRAM refresh control
• TRAPA instruction
• Undefined code
• Undefined instruction
controller
pulse unit
interface
(part of the bus con-
unit (part of the bus
controller)
or instruction that
rewrites the PC*
placed directly after
a delayed branch
instruction*
troller)
2
1
Priority
High
Low