HD6417618 RENESAS [Renesas Technology Corp], HD6417618 Datasheet - Page 79

• Manufacturer Part Number: HD6417618
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

2.6
2.6.1
The CPU has the four processing states: reset, exception handling, program execution, and power-
down. Figure 2.4 shows the CPU state transition. Note that some products do not support the
manual reset function and the MRES pin.
Request for internal power-on reset
or internal manual reset by the WDT
Processing States
State Transition
RES = 0
in any state
Sleep mode
Power-on reset state
Figure 2.4 CPU State Transition
SLEEP instruction by
clearing SSBY bit
Request for
exception handling
RES = 1 and MRES = 0
in any state
Exception handling state
Program execution state
End of
exception handling
SLEEP instruction by
setting SSBY bit
Manual reset state
Software standby mode
Rev. 6.00 Jun. 12, 2007 Page 47 of 610
Request for NMI
or IRQ interrupt
Reset state
Power-down mode
REJ09B0131-0600
Section 2 CPU